{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["12"],"submitter":["Scheidl MA"],"pubmed_abstract":["<h4>Objective</h4>Pilot study with ten healthy adults, testing whether a lightweight, low-cost knee orthosis equipped with EMG-driven impedance control reduces quadriceps muscle effort during the sit-to-stand (STS) transition.<h4>Methods</h4>Ten able-bodied adults performed 15 paced STS repetitions under three conditions: without orthosis (No-Ortho), orthosis worn unpowered (Ortho-OFF; friction-compensated), and orthosis actively powered (Ortho-ON). Surface electromyography (EMG) was recorded using 8-channel thigh bracelets on both legs. EMG signals from the braced leg were processed using ridge regression and slew-rate limiting to generate a normalized control signal that dynamically scales knee stiffness while maintaining constant damping. Median values and trial-to-trial variance of the"],"journal":["Frontiers in robotics and AI"],"pagination":["1732294"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12823904"],"repository":["biostudies-literature"],"pubmed_title":["EMG-controlled knee orthosis lowers effort in sit-to-stand."],"pmcid":["PMC12823904"],"pubmed_authors":["Schuh K","Scheidl MA","Castellini C","Sierotowicz M","Betsch M"],"additional_accession":[]},"is_claimable":false,"name":"EMG-controlled knee orthosis lowers effort in sit-to-stand.","description":"<h4>Objective</h4>Pilot study with ten healthy adults, testing whether a lightweight, low-cost knee orthosis equipped with EMG-driven impedance control reduces quadriceps muscle effort during the sit-to-stand (STS) transition.<h4>Methods</h4>Ten able-bodied adults performed 15 paced STS repetitions under three conditions: without orthosis (No-Ortho), orthosis worn unpowered (Ortho-OFF; friction-compensated), and orthosis actively powered (Ortho-ON). Surface electromyography (EMG) was recorded using 8-channel thigh bracelets on both legs. EMG signals from the braced leg were processed using ridge regression and slew-rate limiting to generate a normalized control signal that dynamically scales knee stiffness while maintaining constant damping. Median values and trial-to-trial variance of the","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025","modification":"2026-06-06T22:37:14.853Z","creation":"2026-06-06T03:10:52.191Z"},"accession":"S-EPMC12823904","cross_references":{"pubmed":["41586421"],"doi":["10.3389/frobt.2025.1732294"]}}