Abstract
Aims To demonstrate the reliability and validity of the modified four-square step test (mFSST) and the step test (ST) in community-dwelling older adults. Methods Fifty older adults were recruited. The test-retest reliability of the mFSST and ST was evaluated with one-hour-interval. The mFSST and ST was compared with Timed up and Go Test (TUG) and Five Times Sit to Stand Test (FTST) to demonstrate concurrent validity. Results The mean age of the participants was 72.0 ± 5.7 years. The test-retest reliability of mFSST and ST was excellent (ICC = 0.971 and 0.938, respectively). In concurrent validity analysis, the mFSST was strongly correlated with TUG and FTST (r1=0.755,r2=0.575,p < 0.001). Both the ST (right) and ST (left) were highly correlated with TUG and FTST (r= −0.527 to −0.578, p < 0.001). In addition, the ST (right) and ST (left) were highly correlated with FTST (r1= −0.533,r2= −0.527,p < 0.001). Conclusions mFSST and ST was proven to be valid and reliable in older adults.
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