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Related Experiment Videos

Lactate exchange and removal abilities in rowing performance

L Messonnier1, H Freund, M Bourdin

  • 1Laboratoire de Physiologie-GIP Exercise, Faculté de Médecine, Oullins, France.

Medicine and Science in Sports and Exercise
|March 1, 1997
PubMed
Summary

Elite rowers show enhanced lactate exchange and removal abilities, crucial for high-intensity performance. These physiological adaptations, likely from training, significantly predict rowing performance and the capacity to sustain high work rates.

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Area of Science:

  • Exercise Physiology
  • Sports Science
  • Biophysics

Background:

  • Lactate kinetics are critical for athletic performance, influencing energy metabolism during intense exercise.
  • Understanding lactate exchange and removal abilities can provide insights into physiological adaptations in athletes.
  • Rowing performance is linked to the body's capacity to manage lactate accumulation.

Purpose of the Study:

  • To investigate the relationship between individual rowing performance and the abilities of lactate exchange and removal.
  • To determine if enhanced lactate kinetics correlate with higher work rates and better performance in male rowers.
  • To explore the potential role of training-induced adaptations in elite rowers' lactate handling capabilities.

Main Methods:

  • Twelve male rowers underwent three ergometer tests: incremental exercise for maximal oxygen uptake (VO2max) and maximal aerobic power (Pamax), a 2500-m all-out test for performance (P2500), and a 6-min high-intensity test for lactate kinetics.

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  • Lactate recovery curves were analyzed using a bi-exponential function, with velocity constants gamma 1 (lactate exchange) and gamma 2 (lactate removal) quantified.
  • Statistical correlations were performed between performance metrics (P2500, P2500%) and lactate kinetic parameters (gamma 1, gamma 2).

    • Main Results:

    • Rowing performance (P2500) was positively correlated with lactate removal ability (gamma 2, P < 0.05).
    • Lactate exchange (gamma 1) and removal (gamma 2) abilities collectively explained 67% of the variance in rowing performance (P2500).
    • The ability to sustain high relative work rates (P2500%) was significantly correlated with enhanced lactate removal ability (gamma 2, P < 0.01).

    Conclusions:

    • Improved rowing performance is associated with superior lactate exchange and removal capacities.
    • Elite rowers demonstrate a strong correlation between high relative work rate capability and enhanced lactate removal.
    • The observed high lactate kinetic parameters in rowers likely result from specific training adaptations.