Absolute lactate threshold predicts endurance performance in master athletes
Journal Title: Biology of Sport - Year 2009, Vol 26, Issue 2
Abstract
In master athletes the relationship between lactate threshold (LT) and endurance performance is unclear, possibly due to age-related decrease in VO2peak. To determine whether an absolute measure of LT was a significant predictor of 10km running performance in master athletes, 51 men master athletes (40-77 yrs) performed a treadmill graded exercise test with minute-by-minute venous blood samples for lactate analysis. Training status and recent 10 km performances were determined by questionnaire. VO2peak (r=-0.56, P<0.001) and the two absolute measures of LT, Power at LT (r=-0.44, P<0.001) and VO2 at LT (r=-0.39, P=0.002), were significantly correlated to 10 km performance, but relative LT (% of VO2peak) was not (r=0.10, P=0.48). VO2peak (R2=0.31, P<0.001) and Power at LT (∆R2=0.08, P=0.015) were significant predictors of 10 km performance. These findings suggest that absolute LT is predictive of endurance performance in master athletes. Furthermore, relative LT is not a useful evaluation of LT in master athletes, possibly because of the age-related decrease in VO2peak.
Authors and Affiliations
A Rossuello, S Hawkins, R Wiswell
Keywords
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