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vVO2max versus Vpeak, what is the best predictor of running performances in middle-aged recreationally-trained runners?

2014; Elsevier BV; Volume: 30; Issue: 4 Linguagem: Inglês

10.1016/j.scispo.2014.10.006

1778-4131

D.F. da Silva, Herbert Gustavo Simões, Fabiana Andrade Machado,

Cardiovascular and exercise physiology

Summary Objective The present study aimed to compare maximal aerobic speed (MAS) determined by vVO 2max and peak velocity ( V peak ) as well as their time limits ( t lim ) in middle-aged recreationally-trained runners. The relationships between MAS and t lim with 10- and 15-km running performances were analyzed. Equipment and methods Twenty-one middle-aged recreationally-trained runners with VO 2max of 54.0 ± 7.6 mL·kg −1 ·min −1 took part in the present study. Participants were randomly submitted to two incremental continuous treadmill tests conducted in laboratory environment to determine vVO 2max and V peak . After that, it was performed two tests which aimed to determine t lim at vVO 2max and V peak . Participants also run 10 km and 15 km in a 400 m track. Results Results demonstrated that vVO 2max (15.5 ± 1.7 km·h −1 ) was significantly higher ( P = 0.033) than V peak (15.2 ± 1.4 km·h −1 ). It was also observed statistical differences ( P = 0.023) between t lim at vVO 2max (5.4 ± 2.1 min) and t lim at V peak (6.3 ± 1.4 min). Correlations between V peak and performances were higher than correlations between vVO 2max and the same performances (10-km- r = 0.77 vs 0.65 [ P r = 0.75 vs 0.64 [ P t lim at V peak presented correlation with 10- and 15-km, not observed between t lim at vVO 2max and performances ( V peak - r = −0.44 and −0.45 [ P 2max - r = −0.21 and −0.20 [ P > 0.05]). V peak and its t lim showed to be better predictors of endurance performance of middle-aged recreationally-trained runners.