Effect of stride count on the validity and reliability of autocorrelation-based gait variability variables in older adults requiring long-term care.

ABSTRACT: [Purpose] In this study, we aimed to investigate the effects of stride count on the values, validity, and test-retest reliability of autocorrelation-based gait variability variables in older adults requiring long-term care. [Participants and Methods] Thirty participants walked along a 20-meter walkway with a triaxial accelerometer attached to the trunk. The experimental protocol included two walking sessions, each consisting of two consecutive trials. Autocorrelation coefficients were derived from trunk acceleration signals while varying the stride count from 2 to 10 in one-stride increments. We analyzed the influence of stride count on the absolute differences between autocorrelation coefficients and their 10-stride reference values. Additionally, for each stride count, we assessed correl

SUBMITTER: Fukamachi K 

PROVIDER: S-EPMC12907741 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature