OBJECTIVE: To determine the reliability of a gas analyzer while assessing oxygen consumption (&OV0312;O2) during a 5-min walking test. DESIGN: Forty healthy participants were connected to the KB1-C and walked for 5 mins on a 5-m walkway. Total &OV0312;O2 or energy expenditure (EE) was obtained by averaging the samples for each minute for 5 mins of walking. Walk distance (D), gait speed (S), and gait energy cost (C) were also evaluated. RESULTS: The ICC2,1 for EE, D, S, and C were 0.88, 0.92, 0.92, and 0.67, respectively. The coefficient of variation across trials for each variable was 7.4, 3.6, 3.2, and 9%, respectively. CONCLUSION: All but C generated high coefficients of reliability. All variables demonstrated acceptable test-retest variability. There was low variability between participants for C.
|Original language||English (US)|
|Number of pages||5|
|Journal||American Journal of Physical Medicine and Rehabilitation|
|State||Published - Jun 1 2007|
- Oxygen Consumption
ASJC Scopus subject areas
- Physical Therapy, Sports Therapy and Rehabilitation