Works (69)

Updated: October 22nd, 2024 05:02

2024 article

<i>Human-Robot Collaboration in Occupational Settings</i>: An Introduction to the Special Issue

Lim, S., Hsiao, H., & Xu, X. (2024, April 5). IISE TRANSACTIONS ON OCCUPATIONAL ERGONOMICS & HUMAN FACTORS, Vol. 4.

By: S. Lim*, H. Hsiao* & X. Xu n

Sources: ORCID, Web Of Science, NC State University Libraries
Added: April 22, 2024

2024 journal article

Exploring the impact of human-robot interaction on workers' mental stress in collaborative assembly tasks

APPLIED ERGONOMICS, 116.

By: B. Su n, S. Jung n, L. Lu n, H. Wang n, L. Qing n & X. Xu n

author keywords: Human -robot collaboration; Interaction modality; Mental stress; Physiological responses
UN Sustainable Development Goal Categories
Sources: ORCID, Web Of Science, NC State University Libraries
Added: January 6, 2024

2024 article

Factors Affecting Workers' Mental Stress in Handover Activities During Human-Robot Collaboration

Lu, L., Xie, Z., Wang, H., Su, B., Jung, S., & Xu, X. (2024, January 12). HUMAN FACTORS, Vol. 1.

By: L. Lu n, Z. Xie n, H. Wang n, B. Su n, S. Jung n & X. Xu n

author keywords: collaborative robot; workplace safety; mental health; unpredictable motion
TL;DR: The mental stress of workers during HRC is lower when the robot's end effector approaches a worker within the worker's field of view, approaches at a lower speed, or follows a constrained trajectory. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: January 13, 2024

2024 journal article

Markerless gait analysis through a single camera and computer vision

JOURNAL OF BIOMECHANICS, 165.

By: H. Wang n, B. Su n, L. Lu n, S. Jung n, L. Qing n, Z. Xie n, X. Xu n

author keywords: Motion tracking; Lower extremities; Joint kinematics; Gait parameters; Deep neural networks
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 22, 2024

2024 journal article

Predicting Human Postures for Manual Material Handling Tasks Using a Conditional Diffusion Model

IEEE Transactions on Human-Machine Systems.

By: L. Qing, B. Su, S. Jung, L. Lu, H. Wang & X. Xu

Source: ORCID
Added: October 21, 2024

2023 article

An Image-Based Human-Robot Collision Avoidance Scheme: A Proof of Concept

Xie, Z., Lu, L., Wang, H., Li, L., & Xu, X. (2023, June 8). IISE TRANSACTIONS ON OCCUPATIONAL ERGONOMICS & HUMAN FACTORS, Vol. 6.

By: Z. Xie n, L. Lu n, H. Wang n, L. Li n & X. Xu n

author keywords: Collaborative robot; collision avoidance; computer vision; robot kinematics; risk assessment
TL;DR: A reliable system for human-robot collision avoidance system employing computer vision that enables proactive prevention of dangerous collisions between humans and robots and greatly extends the effective detection range compared to previous studies. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: July 31, 2023

2023 article

Improving Workers' Musculoskeletal Health During Human-Robot Collaboration Through Reinforcement Learning

Xie, Z., Lu, L., Wang, H., Su, B., Liu, Y., & Xu, X. (2023, May 22). HUMAN FACTORS, Vol. 5.

By: Z. Xie n, L. Lu n, H. Wang n, B. Su n, Y. Liu n & X. Xu n

author keywords: robotics; computer-supported collaborations; human-automation interaction; job risk assessment; human-robot interaction
TL;DR: The proposed model-free reinforcement learning method can learn the optimal worker postures without the need for specific biomechanical models and can be applied to improve the occupational safety in robot-implemented factories. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: ORCID, Web Of Science, NC State University Libraries
Added: May 23, 2023

2022 journal article

A Simple Method to Optimally Select Upper-Limb Joint Angle Trajectories from Two Kinect Sensors during the Twisting Task for Posture Analysis

SENSORS, 22(19).

By: P. Liu*, C. Chang*, L. Li n & X. Xu n

author keywords: twisting task; joint angle; data selection; regression; error trendline; Kinect sensor
MeSH headings : Biomechanical Phenomena; Humans; Joints; Posture; Range of Motion, Articular; Upper Extremity
TL;DR: The finding indicates that integrating the outputs from two Kinect sensor datasets using the proposed method can be more robust than using a single sensor for upper-limb joint angle trajectory estimations during the twisting task. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: October 24, 2022

2022 journal article

A mobile platform-based app to assist undergraduate learning of human kinematics in biomechanics courses

JOURNAL OF BIOMECHANICS, 142.

By: H. Wang n, Z. Xie n, L. Lu n, B. Su n, S. Jung n & X. Xu n

author keywords: Joint angles; User interface; Computer vision; Undergraduate education; Self-relevant data
MeSH headings : Biomechanical Phenomena; Humans; Learning; Mathematics; Mobile Applications; Students
TL;DR: A mobile app that can serve as a potential instructional tool to assist in conducting human motion experiments in biomechanics courses and view various kinematics data for a selected joint or body segment in real-time through the user interface of the mobile device. (via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 6, 2022

2022 review

Mental stress and safety awareness during human-robot collaboration - Review

[Review of ]. APPLIED ERGONOMICS, 105.

By: L. Lu n, Z. Xie n, H. Wang n, L. Li n & X. Xu n

author keywords: Human-robot collaboration; Mental stress; Safety awareness; Workplace safety
Sources: ORCID, Web Of Science, NC State University Libraries
Added: June 28, 2022

2021 journal article

A computer-vision method to estimate joint angles and L5/S1 moments during lifting tasks through a single camera

JOURNAL OF BIOMECHANICS, 129.

By: H. Wang n, Z. Xie n, L. Lu n, L. Li n & X. Xu n

author keywords: Musculoskeletal disorders; Low-back injuries; Markerless motion tracking; Joint kinematics; L5/S1 joint moment
MeSH headings : Biomechanical Phenomena; Computers; Humans; Lifting; Lumbar Vertebrae; Sacrum
TL;DR: This study showed computer vision could facilitate safety practitioners to quickly identify the jobs with high MSD risks through field survey videos using a single RGB camera and VideoPose3D, an open-source library with a fully convolutional model. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: November 29, 2021

2021 journal article

Lifting Posture Prediction With Generative Models for Improving Occupational Safety

IEEE TRANSACTIONS ON HUMAN-MACHINE SYSTEMS, 51(5), 494–503.

By: L. Li n, S. Prabhu n, Z. Xie n, H. Wang n, L. Lu n & X. Xu n

author keywords: Generative models; lifting tasks; neural networks; occupational injuries; posture prediction
TL;DR: The results prove that using a generative model to predict lifting posture prediction is able to predict postures with reasonable accuracy and validity and can support biomechanical analysis and ergonomics assessment of a lifting task to reduce the risk of low back injuries. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: September 27, 2021

2021 journal article

Real-Time Driving Distraction Recognition Through a Wrist-Mounted Accelerometer

HUMAN FACTORS, 64(8), 1412–1428.

By: Z. Xie n, L. Li n & X. Xu n

author keywords: accident analysis; distractions and interruptions; risk assessment; biomechanics; kinematics
MeSH headings : Humans; Accidents, Traffic; Wrist; Pilot Projects; Automobile Driving; Accelerometry
TL;DR: The results of this pilot study indicate that the proposed driving distraction mitigation system that uses a wrist-worn IMU and ConvLSTM deep neural network classifier may have potential for improving transportation safety. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, NC State University Libraries
Added: April 5, 2021

2020 journal article

A novel vision-based real-time method for evaluating postural risk factors associated with musculoskeletal disorders

APPLIED ERGONOMICS, 87.

By: L. Li n, T. Martin n & X. Xu n

author keywords: RULA; Deep learning; MSD risk assessment
MeSH headings : Adult; Deep Learning; Ergonomics / methods; Female; Humans; Image Processing, Computer-Assisted / methods; Lifting; Male; Musculoskeletal Diseases / diagnostic imaging; Musculoskeletal Diseases / etiology; Occupational Diseases / diagnostic imaging; Occupational Diseases / etiology; Photography / methods; Posture; Risk Assessment; Risk Factors; Upper Extremity / diagnostic imaging
TL;DR: This document examines a novel end-to-end implementation of a deep learning-based algorithm for rapid upper limb assessment (RULA) and indicates that using data augmentation (a strategy to diversify the training data) can significantly improve the robustness of the model. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: June 22, 2020

2020 journal article

Detection of driver manual distraction via image-based hand and ear recognition

ACCIDENT ANALYSIS AND PREVENTION, 137.

By: L. Li n, B. Zhong n, C. Hutmacher n, Y. Liang, W. Horrey* & X. Xu n

author keywords: Driving distraction; Upper extremity kinematics; Deep learning; Computer vision; Multi-class classification
MeSH headings : Accidents, Traffic / prevention & control; Adult; Algorithms; Data Collection; Distracted Driving; Ear / physiology; Female; Hand / physiology; Humans; Male; Neural Networks, Computer; Pattern Recognition, Automated / methods
TL;DR: A novel algorithm for detection of drivers' manual distraction was proposed in this manuscript and achieved comparable overall accuracy with similar research, and was more efficient than other methods. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 6, 2020

2020 journal article

MOPED25: A multimodal dataset of full-body pose and motion in occupational tasks

JOURNAL OF BIOMECHANICS, 113.

By: L. Li n, Z. Xie n & X. Xu n

author keywords: Pose dataset; Kinematics; Postural risk; Computer vision
MeSH headings : Algorithms; Ergonomics; Humans; Motion; Neural Networks, Computer; Posture
TL;DR: A new posture dataset named, MOPED25 (Multimodal Occupational Posture Dataset with 25 tasks) is presented, which includes full-body kinematics data and the synchronized videos of 11 participants, performing commonly seen tasks at workplaces. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: January 11, 2021

2019 journal article

Predicting 3-D Lower Back Joint Load in Lifting: A Deep Pose Estimation Approach

IEEE TRANSACTIONS ON HUMAN-MACHINE SYSTEMS, 49(1), 85–94.

TL;DR: A deep neural network (DNN)-based framework for 3-D pose estimation that provides a reliable tool for assessment of the lower back kinetics during lifting and can be an alternative when the use of marker-based motion capture systems is not possible. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: NC State University Libraries, NC State University Libraries
Added: February 11, 2019

2019 journal article

Video-Based Driver's Hand Tracking using Fast Normalized Cross Coefficient with Improved Computational Efficiency

TRANSPORTATION RESEARCH RECORD, 2673(8), 233–241.

By: L. Li n, C. Hutmacher n & X. Xu n

TL;DR: A computer vision-based method to track hand movement from the recorded driving behavior using fast normalized cross coefficient (NCC) and a novel searching strategy is proposed, which outperformed a state of the art algorithm in MOTA and MT. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: October 14, 2019

2018 journal article

A Deep Neural Network-based method for estimation of 3D lifting motions

JOURNAL OF BIOMECHANICS, 84, 87–93.

author keywords: 3D pose estimation; Machine learning; Deep Neural Network; Lifting; Biomechanics
MeSH headings : Biomechanical Phenomena; Deep Learning; Humans; Lifting; Male; Middle Aged; Movement; Shoulder / physiology
TL;DR: The results demonstrated the capability of the proposed DNN based method for 3D pose estimation with high accuracy and without limitations of marker-based motion capture systems. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: March 4, 2019

2018 journal article

A computer vision based method for 3D posture estimation of symmetrical lifting

JOURNAL OF BIOMECHANICS, 69, 40–46.

author keywords: Computer vision; Marker-less motion capture; Joint kinematics assessment; Lifting; Discriminative approach
MeSH headings : Biomechanical Phenomena; Female; Humans; Joints / physiology; Lifting; Male; Middle Aged; Movement; Photography; Posture
TL;DR: The aim of this study is to develop and validate a computer vision based marker-less motion capture method to assess 3D joint kinematics of lifting tasks and find out if it is a viable alternative for surface marker-based human movement analysis. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2018 article

Design Process for an Ergonomic Solution to the Police Duty Belt

ADVANCES IN PHYSICAL ERGONOMICS & HUMAN FACTORS, Vol. 789, pp. 3–15.

By: M. White n, D. Kaber n, Y. Deng n & X. Xu n

author keywords: Occupational safety; Physical ergonomics; Human-centered design
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 31, 2020

2018 journal article

Occupational cranking operations: The scapula perspective

APPLIED ERGONOMICS, 75, 129–133.

By: J. Lin* & X. Xu n

author keywords: Shoulders; Trucking; Musculoskeletal disorders; Best practice
MeSH headings : Adult; Ergonomics; Hand / physiology; Humans; Male; Man-Machine Systems; Movement; Physical Exertion / physiology; Posture / physiology; Range of Motion, Articular; Rotation; Scapula / physiology; Shoulder Joint / physiology; Task Performance and Analysis
TL;DR: It is suggested that when the resistance is low (lowering the trailer) the driver should stand facing the trailer, and it is advantageous to stand parallel to the trailer and crank while raising the trailer to apply the full body strength to reduce the shoulder load. (via Semantic Scholar)
UN Sustainable Development Goal Categories
5. Gender Equality (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: January 14, 2019

2018 article

Toward Marker-free 3D Pose Estimation in Lifting: A Deep Multi-view Solution

PROCEEDINGS 2018 13TH IEEE INTERNATIONAL CONFERENCE ON AUTOMATIC FACE & GESTURE RECOGNITION (FG 2018), pp. 485–491.

author keywords: markerless 3D human pose estimation; deep neural network; lifting
TL;DR: A multi-view based deep perceptron approach that extracts rich information independently from the image of view, which includes both 2D shape and hierarchical texture information; while a "multi-view integration" network synthesizes information from all available views to predict accurate 3D pose. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: January 21, 2019

2018 journal article

Using a deep learning network to recognise low back pain in static standing

ERGONOMICS, 61(10), 1374–1381.

By: B. Hu*, C. Kim*, X. Ning* & X. Xu n

author keywords: Low back pain; motion analysis; balance control; deep neural network; long-short-term memory
MeSH headings : Biomechanical Phenomena; Case-Control Studies; Deep Learning; Electromagnetic Phenomena; Ergonomics; Feasibility Studies; Humans; Low Back Pain / diagnosis; Male; Middle Aged; Motion; ROC Curve; Standing Position
TL;DR: Human balance and body sway performance during standing trials were utilised to recognise chronic LBP populations using deep neural networks and showed a deep learning network can solve the above classification problem with both promising precision and recall performance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: March 18, 2019

2017 journal article

An entropy-assisted musculoskeletal shoulder model

JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY, 33, 103–110.

By: X. Xu n, J. Lin* & R. McGorry*

MeSH headings : Adult; Biomechanical Phenomena; Electromyography; Entropy; Female; Humans; Male; Models, Biological; Muscle Contraction; Muscle, Skeletal / physiology; Posture; Shoulder / physiology; Shoulder Joint / physiology
TL;DR: The results show that a small weight of the entropy term can improve the predictability of the model in terms of muscle activities, and suggests that the concept of entropy could be helpful for further understanding the mechanism of muscle co-contractions as well as developing a shoulder biomechanical model with greater validity. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Identification of heel strike under a slippery condition

APPLIED ERGONOMICS, 66, 32–40.

By: W. Chang & X. Xu n

author keywords: Heel contact; High speed camera; Kinematics; Force plate
MeSH headings : Accidental Falls; Adult; Biomechanical Phenomena; Female; Floors and Floorcoverings; Friction; Glass; Heel / physiopathology; Humans; Male; Shoes; Walking / physiology
TL;DR: Improved methods are needed over NFT to identify HSI, especially under slippery conditions, as shown in the results of a comparison of HSIs identified from the video captured beneath the force plate and from the force Plate and kinematics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Impact of posture choice on one-handed pull strength variations at low, waist, and overhead pulling heights

INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS, 64, 226–234.

By: D. Yu*, X. Xu n & J. Lin*

author keywords: Industrial ergonomics; Biomechanics; Push and pull; Isometric strength; Postures
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 article

New technologies in human factors and ergonomics research and practice

Lin, J.-H., Kirlik, A., & Xu, X. (2018, January). APPLIED ERGONOMICS, Vol. 66, pp. 179–181.

By: J. Lin*, A. Kirlik* & X. Xu n

MeSH headings : Ergonomics / instrumentation; Humans; Inventions; Research / instrumentation
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Using a marker-less method for estimating L5/S1 moments during symmetrical lifting

APPLIED ERGONOMICS, 65, 541–550.

author keywords: Marker-less motion capture; Lifting; Computer vision
MeSH headings : Adult; Biomechanical Phenomena; Healthy Volunteers; Humans; Joints / physiology; Lifting; Lumbar Vertebrae / physiology; Male; Middle Aged; Models, Biological; Movement / physiology; Reproducibility of Results; Sacrum / physiology; Task Performance and Analysis; Weight-Bearing / physiology
TL;DR: The proposed computer vision-based method to estimate 3D L5/S1 joint moment during symmetrical lifting provides a reliable tool for assessment of lower back loads during occupational lifting and can be an alternative when the use of marker-based motion tracking systems is not possible. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Using the Microsoft Kinect (TM) to assess 3-D shoulder kinematics during computer use

APPLIED ERGONOMICS, 65, 418–423.

By: X. Xu n, M. Robertson*, K. Chen n, J. Lin* & R. McGorry*

author keywords: Office ergonomics; Motion tracking; Shoulder biomechanics; Workstation design
MeSH headings : Adult; Biomechanical Phenomena; Biosensing Techniques / instrumentation; Biosensing Techniques / methods; Computers; Ergonomics / instrumentation; Ergonomics / methods; Feasibility Studies; Female; Healthy Volunteers; Humans; Male; Range of Motion, Articular; Reproducibility of Results; Shoulder Joint / physiology; User-Computer Interface; Work / physiology
TL;DR: The results showed that the Kinect sensor had a better estimate on shoulder flexion/extension, compared with shoulder adduction/abduction and shoulder axial rotation, and can provide some insight on shoulder kinematics for improving office ergonomics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Ergonomic evaluation of standard and alternative pallet jack handless

INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS, 54, 113–119.

By: C. Harris-Adamson*, A. Mielke*, X. Xu* & J. Lin*

author keywords: Push; Pull; Pallet jack; Manual material handling
TL;DR: There was not a clear benefit to using either handle in terms of trunk strength capacity and varied benefits and drawbacks to each handle when comparing compressive and shear forces in the low back. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Hip and knee net joint moments that correlate with success in lateral load transfers over a low friction surface

Ergonomics, 1–9.

By: R. Catena & X. Xu

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

The effect of obesity on postural stability during a standardized lifting task

Journal of Occupational and Environmental Hygiene, 14(3), 180–186.

By: M. Pajoutan*, X. Xu n & L. Cavuoto*

author keywords: Balance; body mass index (BMI); center of pressure; lifting
MeSH headings : Body Mass Index; Ergonomics; Humans; Lifting; Male; Obesity / physiopathology; Postural Balance / physiology; Weight-Bearing / physiology; Young Adult
TL;DR: The results suggest that obesity, as measured by body mass index, does not impair balance control in healthy young males when lifting load is relative to the capacity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Crossref, NC State University Libraries
Added: November 25, 2020

2015 journal article

Accuracy of the Microsoft Kinect (TM) for measuring gait parameters during treadmill walking

GAIT & POSTURE, 42(2), 145–151.

By: X. Xu*, R. McGorry*, L. Chou*, J. Lin* & C. Chang*

author keywords: Gait analysis; Knee and hip joint angle; Step time; Step width
MeSH headings : Adolescent; Adult; Algorithms; Biomechanical Phenomena / physiology; Exercise Test / instrumentation; Female; Gait / physiology; Hip Joint / physiology; Humans; Knee Joint / physiology; Male; Reference Values; Reproducibility of Results; Signal Processing, Computer-Assisted / instrumentation; Walking / physiology; Young Adult
TL;DR: The results of the study suggest that the Kinect sensor may be used as an alternative device to measure some gait parameters for treadmill walking, depending on the desired accuracy level. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Age-related differences in inter-joint coordination during stair walking transitions

GAIT & POSTURE, 42(2), 152–157.

By: S. Chiu*, C. Chang*, J. Dennerlein* & X. Xu*

author keywords: Gait; Aging; Coordination; Variability; Stair negotiation
MeSH headings : Acceleration; Accidental Falls; Adult; Aged; Aging / physiology; Female; Gait / physiology; Humans; Male; Middle Aged; Psychomotor Performance; Reference Values; Walking / physiology; Young Adult
TL;DR: The findings suggest that normal aging adults have less independent control of adjacent joints compared to younger adults suggesting they have less flexibility to modulate inter-joints coordination appropriately during stair walking transitions. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Effects of Working Environment Factors and Operator Experience on Upper Extremity Mechanical Properties During Powered Hand Tool Use

IIE Transactions on Occupational Ergonomics and Human Factors, 3(2), 81–90.

By: X. Xu* & J. Lin.*

TL;DR: The mechanical properties of the upper extremity were identified, which represent muscle capacity to react to an impulsive power tool torque loading and affect the responsive hand displacement, and can be used to predict hand displacement during powered hand-tool use. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 journal article

Evaluation of older driver head functional range of motion using portable immersive virtual reality

Experimental Gerontology, 70, 150–156.

By: K. Chen*, X. Xu*, J. Lin* & R. Radwin*

author keywords: Virtual reality; Older driver; Range of motion; Performance
MeSH headings : Adolescent; Adult; Aged; Aging / physiology; Automobile Driving / psychology; Cross-Sectional Studies; Female; Humans; Male; Neck / physiology; Psychomotor Performance; Range of Motion, Articular / physiology; Rotation; Task Performance and Analysis; User-Computer Interface; Young Adult
TL;DR: Assessing older driver functional ROM may provide more comprehensive assessment of driving ability than neck ROM and target detection success and time to detection may also be part of the aging process as these measures differed between driver groups. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2015 article

Evaluation of regression-based 3-D shoulder rhythms

Xu, X., Dickerson, C. R., Lin, J.-hua, & McGorry, R. W. (2016, August). JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY, Vol. 29, pp. 28–33.

By: X. Xu*, C. Dickerson*, J. Lin* & R. McGorry*

author keywords: Thoracohumeral joint; Shoulder kinematics; ISB recommendations
MeSH headings : Adult; Biomechanical Phenomena / physiology; Clavicle / diagnostic imaging; Clavicle / physiology; Female; Humans; Humerus / diagnostic imaging; Humerus / physiology; Imaging, Three-Dimensional / methods; Male; Movement / physiology; Range of Motion, Articular / physiology; Scapula / diagnostic imaging; Scapula / physiology; Shoulder / diagnostic imaging; Shoulder / physiology; Shoulder Joint / diagnostic imaging; Shoulder Joint / physiology
TL;DR: Since the regression-based shoulder rhythm has been adopted for shoulder biomechanical models to estimate shoulder muscle activities and structure loads, there needs to be further investigation on how the predicted error from the shoulder rhythm affects the output of the biomechanicals model. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Lower extremity kinematics that correlate with success in lateral load transfers over a low friction surface

ERGONOMICS, 58(9), 1571–1580.

By: R. Catena* & X. Xu*

author keywords: general ergonomics; biomechanics; manual handling; slips, trips and falls
MeSH headings : Adult; Aged; Ankle Joint / physiology; Biomechanical Phenomena; Female; Friction; Hip Joint / physiology; Humans; Knee Joint / physiology; Lifting; Lower Extremity / physiology; Male; Middle Aged; Movement; Retrospective Studies; Surface Properties; Weight-Bearing / physiology; Young Adult
TL;DR: St stance width was found to be the major source of success, while sagittal plane motion was altered to potentially maintain balance in the low friction lateral load transfer. (via Semantic Scholar)
UN Sustainable Development Goal Categories
8. Decent Work and Economic Growth (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

The accuracy of the Oculus Rift virtual reality head-mounted display during cervical spine mobility measurement

JOURNAL OF BIOMECHANICS, 48(4), 721–724.

By: X. Xu*, K. Chen*, J. Lin* & R. Radwin*

author keywords: Inertial sensors; Motion analysis; Neck range of motion
MeSH headings : Adult; Aged; Biomechanical Phenomena; Cervical Vertebrae / physiology; Female; Head Movements / physiology; Humans; Male; Middle Aged; Models, Biological; Movement / physiology; Neck / physiology; Range of Motion, Articular / physiology; Reproducibility of Results; Rotation; User-Computer Interface
TL;DR: Comparison of the kinematics data between the Rift and the tracking system indicated that the Rift can provide good estimates on full range of motion (from one side to the other side) during the performed task, but because of inertial sensor drifting, the unilateralrange of motion derived from the Rift is more erroneous. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

The validity of the first and second generation Microsoft Kinect (TM) for identifying joint center locations during static postures

APPLIED ERGONOMICS, 49, 47–54.

By: X. Xu* & R. McGorry*

author keywords: Reference frame alignment; Daily activities; Kinect v2
MeSH headings : Adult; Biomechanical Phenomena; Female; Humans; Imaging, Three-Dimensional / methods; Joints; Male; Motion; Movement; Posture; Reproducibility of Results; Software; Video Games
TL;DR: The results indicate the proposed alignment method can effectively align the Kinect sensor with respect to the motion tracking system, and the accuracy level of the Kinect-identified joint center location is posture-dependent and joint-dependent. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Using horizontal heel displacement to identify heel strike instants in normal gait

GAIT & POSTURE, 42(1), 101–103.

author keywords: Gait events; Comparison; Walking speed; Overground; Stance
MeSH headings : Accelerometry / statistics & numerical data; Adult; Biomechanical Phenomena; Female; Gait / physiology; Heel / physiology; Humans; Male; Mathematical Computing; Middle Aged; Postural Balance / physiology; Shoes; Walking / physiology; Weight-Bearing / physiology
TL;DR: Gait speed was shown to have a significant effect on HHD-determined kHSI, as well as the three other techniques evaluated, highlighting the need for condition-specific identification of k HSI. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

A regression model predicting isometric shoulder muscle activities from arm postures and shoulder joint moments

JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY, 24(3), 419–429.

By: X. Xu*, R. McGorry* & J. Lin*

author keywords: EMG; Muscle co-contraction; Kinematics; Biomechanical model
MeSH headings : Adult; Arm / physiology; Biomechanical Phenomena; Electromyography; Female; Humans; Isometric Contraction / physiology; Male; Models, Biological; Muscle, Skeletal / physiology; Muscles / physiology; Posture / physiology; Reference Values; Regression Analysis; Shoulder / physiology; Work
TL;DR: A set of regression equations to predict the 10th percentile, the median, and the 90th percentile of normalized electromyography (nEMG) activities from shoulder postures and net shoulder moments were developed. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

A regression-based 3-D shoulder rhythm

JOURNAL OF BIOMECHANICS, 47(5), 1206–1210.

By: X. Xu*, J. Lin* & R. McGorry*

author keywords: Humerus; Clavicle; Scapula; Kinematics; ISB recommendations
MeSH headings : Adult; Arm; Biomechanical Phenomena; Clavicle; Female; Humans; Humerus; Male; Models, Biological; Motion; Movement; Posture; Range of Motion, Articular; Regression Analysis; Scapula; Shoulder; Shoulder Joint / physiology; Thorax; Young Adult
TL;DR: Two regression models are developed which predict the orientation of the clavicle and the scapula and the derived regression-based shoulder rhythm could be useful in future biomechanical modeling of the shoulder. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

Joint Contribution to Fingertip Movement During a Number Entry Task: An Application of Jacobian Matrix

JOURNAL OF APPLIED BIOMECHANICS, 30(2), 338–342.

By: J. Qin*, M. Trudeau*, B. Buchholz*, J. Katz*, X. Xu* & J. Dennerlein*

author keywords: keying task; upper extremity; Jacobian matrix; kinematics
MeSH headings : Adult; Arm / physiology; Biomechanical Phenomena; Computer Peripherals; Female; Finger Joint / physiology; Humans; Male; Movement / physiology; Posture / physiology; Range of Motion, Articular / physiology; Task Performance and Analysis
TL;DR: The results demonstrated that the wrist and elbow contribute the most to the fingertip vertical movement, indicating that they play a major role in the keying motion and have a dynamic load beyond maintaining posture. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

Shoulder muscle fatigue development in young and older female adults during a repetitive manual task

ERGONOMICS, 57(8), 1201–1212.

author keywords: age; shoulder; muscle fatigue; electromyography; repetitive work
MeSH headings : Adult; Age Factors; Aged; Deltoid Muscle / physiopathology; Electromyography; Humans; Isometric Contraction; Middle Aged; Muscle Fatigue; Physical Exertion; Shoulder; Superficial Back Muscles / physiopathology; Task Performance and Analysis; Young Adult
TL;DR: It was shown that during an 80-minute repetitive light manual work, older adults exhibited more consistent patterns of electromyographic manifestation of shoulder muscle fatigue and less rest in the upper trapezius muscle than young adults. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

The effect of age on the hand movement time during machine paced assembly tasks for female workers

INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS, 44(1), 148–152.

By: X. Xu*, J. Qin*, T. Zhang* & J. Lin*

author keywords: Aging; Assembly tasks; Female workers; Movement time; Fitts' law
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

Upper extremity kinematic and kinetic adaptations during a fatiguing repetitive task

JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY, 24(3), 404–411.

author keywords: Repetitive work; Kinematic variability; Age; Upper extremity
MeSH headings : Adaptation, Physiological / physiology; Adult; Aged; Biomechanical Phenomena; Elbow / physiology; Female; Humans; Kinetics; Middle Aged; Movement / physiology; Muscle Fatigue / physiology; Muscle, Skeletal / physiology; Pronation / physiology; Range of Motion, Articular / physiology; Reaction Time; Rotation; Shoulder / physiology; Task Performance and Analysis; Torque; Upper Extremity / physiology; Work; Wrist / physiology; Young Adult
TL;DR: The results suggested that kinematic and kinetic adaptations occurred to reduce the biomechanical loading on the fatigued shoulder region to compensate for the increased variability caused by the shoulder joint while still maintaining task requirements. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

Effect of aging on inter-joint synergies during machine-paced assembly tasks

EXPERIMENTAL BRAIN RESEARCH, 231(2), 249–256.

By: X. Xu*, J. Qin*, R. Catena*, G. Faber & J. Lin*

author keywords: Upper extremity movement; Motor coordination; Uncontrolled manifold (UCM); Redundancy
MeSH headings : Adult; Aged; Aging / physiology; Aging / psychology; Algorithms; Analysis of Variance; Biomechanical Phenomena; Data Interpretation, Statistical; Elbow Joint / anatomy & histology; Elbow Joint / physiology; Female; Humans; Joints / anatomy & histology; Joints / physiology; Middle Aged; Movement / physiology; Psychomotor Performance / physiology; Shoulder Joint / anatomy & histology; Shoulder Joint / physiology; Upper Extremity / anatomy & histology; Upper Extremity / physiology; Work; Wrist Joint / anatomy & histology; Wrist Joint / physiology; Young Adult
TL;DR: The results indicated that the synergies of upper extremity movement may not be impaired for machine-paced tasks as people age, in line with a recently proposed theory that for natural tasks, aging people did not have impairment in the ability to organize upper extremities movement into synergies. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

Shoulder joint loading and posture during medicine cart pushing task

Journal of Occupational and Environmental Hygiene, 10(8), 446–454.

By: X. Xu*, J. Lin* & J. Boyer*

MeSH headings : Adult; Female; Friction; Humans; Middle Aged; Occupational Exposure / analysis; Physical Exertion; Posture; Shoulder Joint / physiology
TL;DR: A laboratory experiment was conducted to examine the effects of common factors on shoulder joint moment and shoulder elevation angle of participants during cart pushing, finding that shoulder joint loading while pushing a medical cart is comparable to levels previously reported from heavy manual activities encountered in industry. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2013 journal article

The accuracy of an external frame using ISB recommended rotation sequence to define shoulder joint angle

GAIT & POSTURE, 39(1), 662–668.

By: X. Xu*, R. McGorry* & J. Lin*

author keywords: Shoulder kinematics; Plane of elevation; Elevation angle; Axial rotation
MeSH headings : Adult; Biomechanical Phenomena; Female; Humans; Male; Middle Aged; Posture / physiology; Range of Motion, Articular / physiology; Rotation; Shoulder Joint / physiology; Young Adult
TL;DR: Findings suggest that errors exist when using an external frame to assist in reaching specific shoulder postures, and the performance is poor for extreme shoulders postures. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

The error of L5/S1 joint moment calculation in a body-centered non-inertial reference frame when the fictitious force is ignored

JOURNAL OF BIOMECHANICS, 46(11), 1943–1947.

author keywords: Lifting; Linked segment model; Centrifugal force; Coriolis force
MeSH headings : Adult; Biomechanical Phenomena; Ergonomics; Humans; Joints / physiology; Lifting; Lumbar Vertebrae / physiology; Male; Models, Biological; Movement / physiology; Sacrum / physiology; Young Adult
TL;DR: The results indicate that applying a linked segment model with respect to a body-centered non-inertial reference frame will result in overestimating the peak L5/S1 joint moments of the coronal plane, sagittal plane, and transverse plane during lifting tasks by 78%, 2%, and 59% on average, respectively. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

Assessing manual lifting tasks based on segment angle interpolations

Work (Reading, Mass.), 41 Suppl 1, 2360–2363.

By: C. Chang, X. Xu, G. Faber, I. Kingma & J. Dennerlein

Source: NC State University Libraries
Added: August 6, 2018

2012 journal article

Coordinate transformation between shoulder kinematic descriptions in the Holzbaur et al. model and ISB sequence

JOURNAL OF BIOMECHANICS, 45(15), 2715–2718.

By: X. Xu*, J. Lin* & R. McGorry*

author keywords: Shoulder; Kinematics; Reference frames; Computational; Biomechanical model
MeSH headings : Biomechanical Phenomena; Humans; Models, Biological; Movement / physiology; Shoulder Joint / anatomy & histology; Shoulder Joint / physiology
TL;DR: This paper presents an analysis of the transformation between the coordinates of the shoulder kinematic defined in the Holzbaur et al. upper extremity model and those defined by the ISB. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

Estimating 3-D L5/S1 Moments During Manual Lifting Using a Video Coding System: Validity and Interrater Reliability

HUMAN FACTORS, 54(6), 1053–1065.

By: X. Xu*, C. Chang*, G. Faber*, I. Kingma & J. Dennerlein*

author keywords: video coding; lifting; L5/S1 moment
MeSH headings : Adult; Humans; Lifting; Lumbar Vertebrae / physiology; Male; Middle Aged; Reproducibility of Results; Sacrum / physiology; Video Recording
TL;DR: The results showed that the proposed video coding system could provide a good estimate of total L5/S1 joint loading on the basis of side-view video clips of the simulated lifting tasks, and can be an alternative for back load estimation for some lifting configurations when the use of motion tracking systems is not possible. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

Transformation between different local coordinate systems of the scapula

JOURNAL OF BIOMECHANICS, 45(15), 2724–2727.

By: X. Xu*, J. Lin*, K. Li* & V. Tan*

author keywords: Scapula; Coordinate system transformation; Muscle and ligament parameters; CT scan
MeSH headings : Adult; Biomechanical Phenomena; Female; Humans; Male; Middle Aged; Movement / physiology; Muscle, Skeletal / diagnostic imaging; Muscle, Skeletal / physiology; Radiographic Image Interpretation, Computer-Assisted / methods; Scapula / diagnostic imaging; Scapula / physiology; Tomography, X-Ray Computed / methods
TL;DR: This study aimed to build transformation matrices between different LCSs for the scapula and to provide the coordinates of previously measured muscles and ligaments around the scaps with respect to the International Society of Biomechanics (ISB) recommended LCS. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2012 journal article

Two linear regression models predicting cumulative dynamic L5/S1 joint moment during a range of lifting tasks based on static postures

ERGONOMICS, 55(9), 1093–1103.

By: X. Xu*, C. Chang* & M. Lu*

author keywords: manual materials handling; low back pain; cumulative L5/S1 moment; static moment
MeSH headings : Analysis of Variance; Biomechanical Phenomena; Female; Humans; Imaging, Three-Dimensional; Lifting / adverse effects; Linear Models; Low Back Pain / etiology; Lumbar Vertebrae / physiology; Male; Middle Aged; Models, Anatomic; Posture / physiology; Sacrum / physiology; Statistics as Topic; Task Performance and Analysis; Weight-Bearing / physiology
TL;DR: The proposed regression models may provide a practical approach for predicting the cumulative dynamic L5/S1 joint loading of a lifting task for field studies since it requires only the lifting duration and the static moments at the lift-off and/or set-down instants of the lift. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 journal article

Estimation of 3-D peak L5/S1 joint moment during asymmetric lifting tasks with cubic spline interpolation of segment Euler angles

APPLIED ERGONOMICS, 43(1), 115–120.

author keywords: Lifting tasks; 3-D L5/S1 joint moments; Interpolation; Euler angles
MeSH headings : Adult; Biomechanical Phenomena / physiology; Humans; Joints / physiology; Lifting; Lumbar Vertebrae / physiology; Male; Models, Biological; Sacrum / physiology; Task Performance and Analysis; Young Adult
TL;DR: The results indicate that 4-point cubic spline interpolation of segment Euler angles combined with a biomechanical model can provide a good estimation of 3-D peak L5/S1 joint moments for asymmetric lifting tasks. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 journal article

Estimation of low back moments from video analysis: A validation study

JOURNAL OF BIOMECHANICS, 44(13), 2369–2375.

author keywords: Low back loading; Lifting; Low back pain; Video analysis; Posture matching
MeSH headings : Analysis of Variance; Back / physiology; Biomechanical Phenomena; Humans; Lifting; Methods; Motion; Videotape Recording / methods; Videotape Recording / standards
TL;DR: It is concluded that, when a sufficient number of measurements can be taken, the video analysis method provides valid estimates of low back moments in ergonomic practice and epidemiological studies for lifts up to a moderate level of asymmetry. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 chapter

Postural Observation of Shoulder Flexion during Asymmetric Lifting Tasks

In Digital Human Modeling (pp. 228–230).

TL;DR: The results indicated the average absolute estimate error was 14.7 degrees and the correlation coefficient between the measured and estimated shoulder flexion was 0.91, indicating the observation error may be due to the arm abduction. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: December 22, 2020

2011 journal article

The Validity and Interrater Reliability of Video-Based Posture Observation During Asymmetric Lifting Tasks

HUMAN FACTORS, 53(4), 371–382.

By: X. Xu*, C. Chang*, G. Faber*, I. Kingma & J. Dennerlein*

author keywords: posture observation; asymmetric lifting tasks; side-view video; body segment angles
MeSH headings : Adult; Biomechanical Phenomena; Humans; Lifting; Male; Middle Aged; Observation; Observer Variation; Posture; Reproducibility of Results; Videotape Recording
TL;DR: The proposed observational method was able to provide a robust estimation of major segment angles for asymmetric lifting tasks based on side-view video clips and was consistent among raters, which supports developing a video-based rapid joint loading estimation method. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

An empirical validation of a base-excitation model to predict harvestable energy from a suspended-load backpack system

THEORETICAL ISSUES IN ERGONOMICS SCIENCE, 11(6), 546–560.

By: X. Xu*, S. Hsiang n & G. Mirka*

author keywords: suspended-load backpack; load carriage; walking speed
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

Comparing polynomial and cubic spline interpolation of segment angles for estimating L5/S1 net moment during symmetric lifting tasks

JOURNAL OF BIOMECHANICS, 43(3), 583–586.

By: X. Xu*, C. Chang*, G. Faber*, I. Kingma* & J. Dennerlein

author keywords: Symmetric lifting; Interpolation; Segment angle; L5/S1 net moment
MeSH headings : Computer Simulation; Humans; Lifting; Lumbar Vertebrae / physiology; Male; Models, Biological; Muscle Contraction / physiology; Muscle, Skeletal / physiology; Numerical Analysis, Computer-Assisted; Reproducibility of Results; Sacrum / physiology; Sensitivity and Specificity; Torque; Weight-Bearing / physiology; Young Adult
TL;DR: C cubic spline interpolation on body segments angles provides a more robust basis for calculating L5/S1 net moment from a few key video frames than polynomial interpolations on joint angles from key frames extracted from video recordings. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

Interpolation of segment Euler angles can provide a robust estimation of segment angular trajectories during asymmetric lifting tasks

JOURNAL OF BIOMECHANICS, 43(10), 2043–2048.

author keywords: 3-D lifting; Cubic spline interpolation; Euler angles
MeSH headings : Adult; Biomechanical Phenomena; Humans; Lifting; Lumbar Vertebrae / physiology; Male; Weight-Bearing / physiology
TL;DR: Interpolation of segment Euler angles can provide a robust estimation of segment angular trajectories during asymmetric lifting when measurement error of interpolation points can be controlled at a low level. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 journal article

Prediction accuracy in estimating joint angle trajectories using a video posture coding method for sagittal lifting tasks

ERGONOMICS, 53(8), 1039–1047.

By: C. Chang*, R. McGorry*, J. Lin*, X. Xu* & S. Hsiang n

author keywords: lifting simulation; manual materials handling; posture matching; video coding
MeSH headings : Adult; Biomechanical Phenomena; Humans; Joints / anatomy & histology; Lifting; Male; Posture / physiology; Reproducibility of Results; Video Recording; Young Adult
TL;DR: The ability to accurately predict lifting patterns through video coding can provide ergonomists with greater resolution in characterising or assessing the lifting tasks than evaluation based solely on sampling with a single lifting posture event. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 journal article

Coordination indices between lifting kinematics and kinetics

INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS, 38(11-12), 1062–1066.

By: X. Xu n, S. Hsiang n & G. Mirka*

author keywords: Trunk flexion; External moments; Coordination; Obesity
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 journal article

The effects of a suspended-load backpack on gait

GAIT & POSTURE, 29(1), 151–153.

By: X. Xu n, S. Hsiang n & G. Mirka*

author keywords: Suspended-load backpack; Ground reaction force
MeSH headings : Adult; Analysis of Variance; Back / physiology; Gait / physiology; Humans; Male; Posture / physiology; Shoulder / physiology; Walking / physiology; Weight-Bearing / physiology
TL;DR: The results showed that the response of the temporal variables were consistent with previous studies of conventional backpacks, and suggested that the motion of the load in a suspended-load backpack influences the gait biomechanics and should be considered as this technology advances. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

The effect of a knee support on the biomechanical response of the low back

JOURNAL OF APPLIED BIOMECHANICS, 23(4), 275–281.

By: Y. Shu n, Z. Jiang n, X. Xu n & G. Mirka n

author keywords: lumbar; EMG; kneeling
MeSH headings : Adaptation, Physiological / physiology; Adult; Back / physiology; Biomechanical Phenomena / methods; Female; Humans; Knee Joint / physiology; Lifting; Lumbar Vertebrae / physiology; Male; Muscle Contraction / physiology; Muscle, Skeletal / physiology; Postural Balance / physiology; Stress, Mechanical; Weight-Bearing / physiology
TL;DR: The results showed that the knee support device had no effect on the activation levels of the sampled muscles, indicating that the loss of the degree of freedom from the ankle joint during the kneeSupport condition had no impact on trunk extensor muscle response. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 journal article

The effects of obesity on lifting performance

APPLIED ERGONOMICS, 39(1), 93–98.

By: X. Xu n, G. Mirka n & S. Hsiang n

author keywords: lifting; low back pain
MeSH headings : Biomechanical Phenomena; Body Mass Index; Humans; Lifting; Low Back Pain / etiology; Lumbosacral Region / physiology; Male; North Carolina; Obesity; Occupational Health; Task Performance and Analysis; Weight-Bearing
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

Citation Index includes data from a number of different sources. If you have questions about the sources of data in the Citation Index or need a set of data which is free to re-distribute, please contact us.

Certain data included herein are derived from the Web of Science© and InCites© (2024) of Clarivate Analytics. All rights reserved. You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.