How does age affect changes in leg muscle activation patterns and leg joint moments during prolonged walking?

ABSTRACT: The ways in which age affects neuromuscular control in response to walking-related fatigue are poorly understood. Better understanding of the consequences of walking-related fatigue can inform the development of strategies to improve independent mobility for older adults. In this study, we measured leg muscle excitations and net joint moments in younger and older adults during a 30-min walking trial. Twelve leg muscles were monitored, and wavelet transformation and principal component analyses quantified the effects of age and time on muscle excitation patterns. Perceived exertion increased in both age groups, with higher terminal values in older adults. Over the course of prolonged walking, mean EMG frequency and amplitude decreased while EMG intensities in the slower frequency ranges inc

SUBMITTER: Kwon Y 

PROVIDER: S-EPMC12678509 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature