Key result
The 6-minute walk test elicited a peak VO2 corresponding to 78% of that achieved during cardiopulmonary exercise testing, and the 6-minute walk distance adequately predicted peak VO2 (R2=0.76).
Why the study?
Does the 6-minute walk test accurately predict peak oxygen uptake compared to cardiopulmonary exercise testing in healthy middle-aged and older adults?
Population
86 healthy middle-aged and older adults, aged 40-74 years, with a mean body mass index of 28±6 kg/m2
Comparison
6-minute walk test with physiological response… vs Ramp protocol cardiopulmonary exercise testing…
Design
Cross-sectional
Authors
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May aid VO2 estimation via 6MWT in healthy adults; leaves open prospective validation before clinical use.
Cross-Sectional (n=86)
Does the 6-minute walk test accurately predict peak oxygen uptake compared to cardiopulmonary exercise testing in healthy middle-aged and older adults?
Effect estimate: R2=0.76
The 6-minute walk test is a moderate-to-high intensity activity that can reliably predict cardiorespiratory fitness (peak VO2) in healthy middle-aged and older adults.
Sperandio et al. (2015) conducted a cross-sectional in Healthy subjects (n=86). 6-minute walk test (6MWT) vs. Cardiopulmonary exercise testing (CPET) was evaluated on 6MWT intensity (peak VO2 and maximum heart rate) and prediction of peak VO2 from 6-min walk distance (R2=0.76). The 6-minute walk test elicited a peak VO2 corresponding to 78% of that achieved during cardiopulmonary exercise testing, and the 6-minute walk distance adequately predicted peak VO2 (R2=0.76).
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