Lactate clearance during active and passive recovery Academic Article uri icon

abstract

  • The purpose of this study was to determine the differences in lactate removal between untrained and trained subjects following an exhaustive bout of ergometric cycling. Five untrained and six trained subjects performed a maximal bicycle ergometer test followed by a 10-minute active recovery session performed at 40% of the subject's VO2max. Arterialized venous blood samples were drawn at maximal exercise and at 2-minute intervals throughout the AR phase and for a subsequent 10 minutes of seated passive recovery. Between-group variances were analyzed by ANOVA while lactate removal rates were analyzed by one-way ANOVA for repeated measures with Newman-Kuels post hoc analysis. Our results revealed no significant differences (p < .05) in maximal, active recovery, and passive recovery lactate values between the untrained and trained subjects. However, the trained subjects' lactate values were lower than the untrained subjects' response throughout both recovery phases. Lactate clearance rates were significantly different (p <.05) across trials in both the untrained and trained subjects. The untrained subjects showed significant differences in lactate values at minutes 6, 8, and 10 of active recovery and at minutes 6, 8, and 10 of passive recovery, while the trained subjects' lactate values were significantly different at minutes 8 and 10 of active recovery and at minutes 4, 6, 8, and 10 of passive recovery. Our results suggest that the trained subjects' arterialized venous lactate was removed sooner than the untrained subjects' following a period of light aerobic exercise, demonstrating an apparent increase in metabolic efficiency.

published proceedings

  • Annals of Sports Medicine

author list (cited authors)

  • Cortes, C. W., Kreider, R. B., Al-Mandalawi, S., Lamberth, J., Johnson, K. D., Thompson, W. R., & Anderson, H. N.

complete list of authors

  • Cortes, CW||Kreider, RB||Al-Mandalawi, S||Lamberth, J||Johnson, KD||Thompson, WR||Anderson, HN

publication date

  • January 1988