Abstract
Incremental sit-to-stand exercise (ISTS) is an incremental exercise test using external
signals to control the sit-to-stand rate in a given time frame. This study aimed to
investigate the concurrent validity and reproducibility of the ISTS in aerobic fitness
evaluation among healthy elderly women. Sixteen elderly women performed the ISTS and
cycle ergometer test at 3-day to 2-week intervals, and six of the participants performed
the ISTS twice. Peak oxygen uptake (VO2), peak heart rate and completion time on the ISTS and cycle ergometer test were determined.
Measured peak VO2 on the cycle ergometer test was significantly related to the peak VO2 (r=0.80, P<0.05) and the completion time (r=0.65, P<0.05) on the ISTS. The intraclass
correlation coefficients were 0.96 for peak VO2 values and 0.91 for the completion time values during the two ISTSs. In conclusion,
the ISTS is a valid, reproducible and safe test for aerobic fitness evaluation in
healthy elderly women.
Key word
cycle ergometer - peak oxygen uptake - validity - reproducibility