Erosion of stumble correction evoked with superficial peroneal nerve stimulation in older adults during walking

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dc.contributor.authorBrodie, Ryan
dc.contributor.authorKlimstra, Marc
dc.contributor.authorCommandeur, Drew
dc.contributor.authorHundza, Sandra
dc.date.accessioned2024-10-10T17:23:09Z
dc.date.available2024-10-10T17:23:09Z
dc.date.issued2024
dc.description.abstractIn healthy young adults, electrical stimulation of the superficial peroneal cutaneous nerve (SPn) innervating the dorsum of the foot has been shown to elicit functionally relevant reflexes during walking that are similar to those evoked by mechanical perturbation to the dorsum of the foot during walking and are referred to as stumble corrective (obstacle avoidance) responses. Though age-related differences in reflexes induced by mechanical perturbation have been studied, toe clearance has not been measured. Further, age-related differences in reflexes evoked by electrical stimulation of SPn have yet to be determined. Thus, the purpose of this study was to characterize age-related differences between healthy young adults and older adults with no history of falls in stumble correction responses evoked by electrical stimulation of the SPn at the ankle during walking. Toe clearance relative to the walking surface along with joint displacement and angular velocity at the ankle and knee and EMG of the tibialis anterior, medial gastrocnemius, biceps femoris and vastus lateralis were measured. The combined background and reflex toe clearance was reduced in the older adults compared with the young in mid-early swing (p = 0.011). These age-related differences likely increase fall risk in the older adult cohort. Further, age-related changes were seen in joint kinematics and EMG in older adults compared with the young such as decreased amplitude of the plantarflexion reflex in early swing in older adults (p < 0.05). These altered reflexes reflect the degradation of the stumble corrective response in older adults.
dc.description.reviewstatusReviewed
dc.description.scholarlevelFaculty
dc.identifier.citationBrodie, R., Klimstra, M., Commandeur, D., & Hundza, S. (2024). Erosion of stumble correction evoked with superficial peroneal nerve stimulation in older adults during walking. Journal of Functional Morphology and Kinesiology, 9(2), Article 2. https://doi.org/10.3390/jfmk9020094
dc.identifier.urihttps://doi.org/10.3390/jfmk9020094
dc.identifier.urihttps://hdl.handle.net/1828/20527
dc.language.isoen
dc.publisherJournal of Functional Morphology and Kinesiology
dc.rightsAttribution CC BY
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectaging
dc.subjectfalling
dc.subjectolder adults
dc.subjectperoneal nerve stimulation
dc.subjectreflexes
dc.subjectstumble correction
dc.subjecttripping
dc.titleErosion of stumble correction evoked with superficial peroneal nerve stimulation in older adults during walking
dc.typeArticle

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