Article

Five-min running field test (5 RFT) was established for determining individuals' maximal aerobic velocity (V(amax)) and functional aerobic capacity (VO2peak) during horizontal run. We determined the number of trials required for establishing high reliability of the 5 RFT and examined its accuracy in evaluating individuals' maximal aerobic capacity (VO2max). METHODS : The V(amax)(5) recorded during the 5 RFT on four separate days was compared in 45 subjects (14 male, 31 female, 17.0+/-0.2 yrs) of various levels of physical fitness. The accuracy of VO2max evaluation using V(amax)(5) was examined via regression analysis in additional 23 male subjects (20.7+/-0.3 yrs). RESULTS : The mean correlation coefficient of V(amax)(5) among four trials was 0.94. Intraclass reliability coefficient across all trials was 0.98. For trial 3 and 4, the mean value of subjects' V(amax)(5) was higher than that of trial 1 and 2. V(amax)(5) of trial 2 was also higher than that of trial 1 while no difference was found between trial 3 and 4. F-test of equality of variances demonstrated similar sample variance of V(amax)(5) in all trials. Within-subject coefficient of variation in V(amax)(5) was 3.7 percent for all trials was reduced to 2.4 percent for trial 3 vs 4. For examining the accuracy in VO2max evaluation, regression analysis revealed that the V(amax)(5) explained 35.0 percent of the variance of measured VO2max (SEE = 5.64 ml x kg(-1) x min(-1)). CONCLUSIONS: The 5_RFT is reliable in determining V(amax)(5). Nevertheless, two familiarization sessions are recommended for achieving the best performance in the test. The 5_RFT cannot evaluate VO2max with reasonable accuracy in young males.

Langue : ANGLAIS

Tiré à part : OUI

Identifiant basis : 2002219762