Key result
Predicted VO2peak values from 20-m shuttle run test regression equations were moderately correlated with treadmill VO2peak (r=0.55 for nondisabled youth equation, r=0.66 for MR equation; p<0.01).
Why the study?
Do regression formulas based on the 20-m shuttle run test accurately predict V̇O2peak compared to treadmill testing in healthy youths?
Cross-Sectional (n=51)
Do regression formulas based on the 20-m shuttle run test accurately predict V̇O2peak compared to treadmill testing in healthy youths?
Effect estimate: r = 0.55 and r = 0.66
p-value: p=<0.01
Regression formulas based on the 20-m shuttle run test provide moderately valid predictions of V̇O2peak in healthy youths compared to standard treadmill testing.
Moderate correlations limit substituting shuttle run equations for treadmill VO2peak; leaves open need for refined youth-specific validation.
Two regression equations were developed to predict cardiovascular fitness (CVF) based on the 20-m shuttle run test (20-MST) for nondisabled youth and for youth with mild mental retardation (MR). The purpose of this study was to compare the validity of both regression formulas to predict CVF in nondisabled, healthy youths (ages 8 to 15 yrs; 38 females and 13 males). Participants performed two modified Bruce protocol treadmill (TM) tests and two 20-MSTs on separate days. CVF (V̇O2peak, ml • kg−1 • min−1) was measured during the TM tests and computed for the 20-MST using both regression equations. Results indicate that test-retest correlations for the 20-MST (# of laps; r = 0.89) and TM test (V̇O2peak, ml • kg−1 • min−1; r = 0.86) were high. Predicted V̇O2peak values were moderately significant (nondisabled youth: r = 0.55, p < .01; youth with MR: r = 0.66, p < .01) when compared with TM V̇O2peak. Correlation between the two regression equations was significant (r = 0.78, p < .01).
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Pitetti et al. (2002) conducted a cross-sectional in Healthy (n=51). 20-m shuttle run test (20-MST) regression equations vs. Treadmill (TM) test was evaluated on Correlation between predicted VO2peak and treadmill VO2peak (r = 0.55 and r = 0.66, p=<0.01). Predicted VO2peak values from 20-m shuttle run test regression equations were moderately correlated with treadmill VO2peak (r=0.55 for nondisabled youth equation, r=0.66 for MR equation; p<0.01).
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