Using Musculoskeletal Models to Estimate the Effects of Exoskeletons on Spine Loads During Dynamic Lifting Tasks: Differences between Opensim and the Anybody Modeling System

Опубликована: Янв. 1, 2025

Язык: Английский

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Assessment of active back-support exoskeleton on carpentry framing tasks: Muscle activity, range of motion, discomfort, and exertion

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

Опубликована: Март 6, 2025

Язык: Английский

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

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

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Preference-based assistance optimization for lifting and lowering with a soft back exosuit

Science Advances, Год журнала: 2025, Номер 11(15)

Опубликована: Апрель 9, 2025

Wearable robotic devices have become increasingly prevalent in both occupational and rehabilitative settings, yet their widespread adoption remains inhibited by usability barriers related to comfort, restriction, noticeable functional benefits. Acknowledging the importance of user perception this context, study explores preference-based controller optimization for a back exosuit that assists lifting. Considering high mental metabolic effort discrete motor tasks impose, we used forced-choice Bayesian Optimization approach promotes sampling efficiency leveraging domain knowledge about just differences between assistance settings. Optimizing over two control parameters, preferred settings were consistent within uniquely different participants. We discovered overall, participants asymmetric parameter configurations with more lifting than lowering assistance, preferences sensitive anthropometrics. These findings highlight potential perceptually guided wearable devices, marking step toward pervasive these systems real world.

Язык: Английский

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Evaluation of the support provided by a soft passive exoskeleton in individuals with back pain

Applied Ergonomics, Год журнала: 2025, Номер 127, С. 104514 - 104514

Опубликована: Апрель 13, 2025

Physically straining occupations involving repetitive lifting and forward leaning increase risk of back pain. In response, exoskeletons have been developed to alleviate strain on muscles potentially prevent such people experiencing pain, these may also help decrease the pain-related activity limitations during work or leisure. This experimental study evaluated effects a soft passive exoskeleton muscle activity, acute kinesiophobia, movement kinematics. Individuals mild moderate pain (n=35) performed tasks, both with without support exoskeleton. Electromyography data were collected for trunk hip muscles, alongside spine kinematics, reported levels concerns regarding daily activities. Back reduced by up 35% (pExo<0.001) tasks 24% (pExo<0.001). Participants lumbar (p<0.01) decreased kinesiophobia (p<0.001) across all when supported Minimal influence kinematics was observed there no observable changes in abdominal co-activation compared support. These results indicate that LiftSuit, exoskeleton, can effectively reduce among individuals tasks. findings suggest be beneficial physically demanding workers

Язык: Английский

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Musculoskeletal models determine the effect of a soft active exosuit on muscle activations and forces during lifting and lowering tasks

Journal of Biomechanics, Год журнала: 2024, Номер 176, С. 112322 - 112322

Опубликована: Сен. 11, 2024

Язык: Английский

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