The perceptual and biomechanical effects of scaling back exosuit assistance to changing task demands DOI Creative Commons

Jinwon Chung,

D. Adam Quirk,

Jason M. Cherin

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Март 29, 2025

Back exoskeletons are gaining attention for preventing occupational back injuries, but they can disrupt movement, a burden that risks abandonment. Enhanced adaptability is proposed to mitigate burdens, perceptual benefits less known. This study investigates the and biomechanical impacts of SLACK suit (non-assistive) controller versus three controllers with varying adaptability: Weight-Direction-Angle adaptive (WDA-ADPT) scales assistance based on weight boxes using chest-mounted camera machine learning algorithm, movement direction, trunk flexion angle, standard Direction-Angle (DA-ADPT) Angle (A-ADPT) controllers. Fifteen participants performed variable (2, 8, 14 kg) box-transfer task. WDA-ADPT achieved highest score (88%) across survey categories reduced peak extensor (BE) muscle amplitudes by 10.1%. DA-ADPT had slightly lower (76%) BE reduction (8.5%). A-ADPT induced hip restriction, which could explain lowest (55%) despite providing largest reductions in activity (17.3%). Reduced scores DA were explained too much or little actual task demands. These findings underscore scaling demands improves perception device's suitability.

Язык: Английский

Ability of a passive back support exoskeleton to mitigate fatigue related adaptations in a complex repetitive lifting task DOI Creative Commons

Emma J Ratke,

Hannah McMaster,

Chris L. Vellucci

и другие.

Journal of Biomechanics, Год журнала: 2025, Номер unknown, С. 112553 - 112553

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Influence of varied assistance levels provided by a dual-joint active back-support exoskeleton on spinal musculoskeletal loading and kinematics during lifting DOI Creative Commons
Feng Hu, Niels P. Brouwer, Ali Tabasi

и другие.

Ergonomics, Год журнала: 2025, Номер unknown, С. 1 - 13

Опубликована: Фев. 18, 2025

An active dual-joint back-support exoskeleton with motors at both lumbar and hip level was designed to reduce spinal musculoskeletal loading preserve flexibility during lifting. A subject-specific controller estimated the moment actively generated by back muscles counteract gravitational forces on upper body, minimising a counter-productive abdominal muscle contraction. Eight subjects lifted 15 kg load using free technique four assistance levels, i.e. 0%, 30%, 50%, 70% of moment. Time-averaged L5S1 compressive force an EMG-driven biomechanical model, decreased 5.5–9.3% 14.9–28.6%, respectively, non-zero assistance. Higher did not yield larger compression reduction but gain further in time-averaged No significant changes activity minor flexion were observed suggesting design achieved their objectives.

Язык: Английский

Процитировано

0
Assessment of active back-support exoskeleton on carpentry framing tasks: Muscle activity, range of motion, discomfort, and exertion DOI
Akinwale Okunola, Abiola Akanmu, Houtan Jebelli

и другие.

International Journal of Industrial Ergonomics, Год журнала: 2025, Номер 107, С. 103716 - 103716

Опубликована: Март 6, 2025

Язык: Английский

Процитировано

0
The perceptual and biomechanical effects of scaling back exosuit assistance to changing task demands DOI Creative Commons

Jinwon Chung,

D. Adam Quirk,

Jason M. Cherin

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Март 29, 2025

Back exoskeletons are gaining attention for preventing occupational back injuries, but they can disrupt movement, a burden that risks abandonment. Enhanced adaptability is proposed to mitigate burdens, perceptual benefits less known. This study investigates the and biomechanical impacts of SLACK suit (non-assistive) controller versus three controllers with varying adaptability: Weight-Direction-Angle adaptive (WDA-ADPT) scales assistance based on weight boxes using chest-mounted camera machine learning algorithm, movement direction, trunk flexion angle, standard Direction-Angle (DA-ADPT) Angle (A-ADPT) controllers. Fifteen participants performed variable (2, 8, 14 kg) box-transfer task. WDA-ADPT achieved highest score (88%) across survey categories reduced peak extensor (BE) muscle amplitudes by 10.1%. DA-ADPT had slightly lower (76%) BE reduction (8.5%). A-ADPT induced hip restriction, which could explain lowest (55%) despite providing largest reductions in activity (17.3%). Reduced scores DA were explained too much or little actual task demands. These findings underscore scaling demands improves perception device's suitability.

Язык: Английский

Процитировано

0