ArticleScientific reports2023
Muscle coordination and recruitment during squat assistance using a robotic ankle-foot exoskeleton.
Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Design and evaluation of a passive knee-ankle exoskeleton for walking and squatting: a musculoskeletal simulation study.Medical & biological engineering & computing · 2026Article
- Impact of an occupational back-support exoskeleton on muscle synergies during a pick-up movement.European journal of applied physiology · 2026Article
- The impact of transcranial direct current stimulation on neuromuscular control during directional change.BMC sports science, medicine & rehabilitation · 2025Article
- Lower limb muscle synergies during deceleration at different change of direction angles.Scientific reports · 2025Article
- Controlling Negative and Positive Power for Efficiency Enhancement and Muscle Strain Mitigation During Squatting with a Portable Knee Exoskeleton.Annals of biomedical engineering · 2025Article
- Investigations on the Effects of a Passive Standing-from-Squatting and Gait Assistive Exoskeleton on Human Motion.Bioengineering (Basel, Switzerland) · 2025Article
- Comparative Effects of Narrow vs. Wide Cuff Blood Flow Restriction on Muscle Synergy Dynamics: A Time-Frequency Decomposition Approach.Sensors (Basel, Switzerland) · 2025Article
- A muscle synergy-based method to improve robot-assisted movements.Scientific reports · 2025Article
- A versatile knee exoskeleton mitigates quadriceps fatigue in lifting, lowering, and carrying tasks.Science robotics · 2024Article
- Biosignal-integrated robotic systems with emerging trends in visual interfaces: A systematic review.Biophysics reviews · 2024Review
- Human-in-the-loop optimization of wearable device parameters using an EMG-based objective function.Wearable technologies · 2024Article
- Evaluation of controllers for augmentative hip exoskeletons and their effects on metabolic cost of walking: explicit versus implicit synchronization.Frontiers in bioengineering and biotechnology · 2024Article
- Predicting the metabolic cost of exoskeleton-assisted squatting using foot pressure features and machine learning.Frontiers in robotics and AI · 2023Article
Corrections and comments
- Erratum issued
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Squatting is an intensive activity routinely performed in the workplace to lift and lower loads. The effort to perform a squat can decrease using an exoskeleton that considers individual worker's differences and assists them with a customized solution, namely, personalized assistance. Designing such an exoskeleton could be improved by understanding how the user's muscle activity changes when assistance is provided. This study investigated the change in the muscle recruitment and activation pattern when personalized assistance was provided. The personalized assistance was provided by an ankle-foot exoskeleton during squatting and we compared its effect with that of the no-device and unpowered exoskeleton conditions using previously collected data. We identified four main muscle recruitment strategies across ten participants. One of the strategies mainly used quadriceps muscles, and the activation level corresponding to the strategy was reduced under exoskeleton assistance compared to the no-device and unpowered conditions. These quadriceps dominant synergy and rectus femoris activations showed reasonable correlations (r = 0.65, 0.59) to the metabolic cost of squatting. These results indicate that the assistance helped reduce quadriceps activation, and thus, the metabolic cost of squatting. These outcomes suggest that the muscle recruitment and activation patterns could be used to design an exoskeleton and training methods.
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