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Plasma lactate decline during passive recovery from high-intensity exercise
1Department of Physiology, University of the Witwatersrand, Medical School, Parktown, Johannesburg, South Africa. 127tanja@chiron.wits.ac.za
Medicine and Science in Sports and Exercise
|May 20, 1999
Summary
Athletic training does not improve plasma lactate removal during passive recovery. Endurance fitness, measured by maximum turn point power output, showed no correlation with lactate decline rates after intense exercise.
Area of Science:
- Exercise Physiology
- Sports Science
- Biochemistry
Background:
- Repeated high-intensity exercise performance in athletes may depend on efficient plasma lactate removal during recovery.
- Understanding the relationship between training status and lactate kinetics is crucial for optimizing athletic performance.
Purpose of the Study:
- To investigate if athletic training enhances plasma lactate removal during passive recovery.
- To determine the relationship between endurance fitness and the rate of plasma lactate decline post-exercise.
Main Methods:
- Plasma lactate levels were measured in trained and untrained males during and after incremental exercise to exhaustion.
- Endurance fitness was assessed using maximum turn point power output (MTP).
- Lactate recovery curves were analyzed to quantify lactate decline parameters.
Main Results:
- No significant correlation was found between maximum turn point power output (MTP) and plasma lactate recovery parameters.
- Spearman's rank order correlation coefficients (r(s)) ranged from -0.042 to -0.31, indicating no significant relationship.
Conclusions:
- Training does not confer an advantage in plasma lactate decline during passive recovery from exercise at equivalent relative maximal intensities.
- Lactate removal during passive recovery appears independent of training status when normalized for maximal exercise intensity.