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Decrease of endurance performance during Olympic Triathlon

G De Vito1, M Bernardi, E Sproviero

  • 1Istituto di Fisiologia Umana, Università La Sapienza, Roma, Italy.

International Journal of Sports Medicine
|January 1, 1995
PubMed
Summary
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Endurance performance in triathletes significantly declines after the swim and bike segments of an Olympic Triathlon (OT). Peak oxygen uptake (VO2peak) and ventilatory threshold (Tvent) are key predictors of performance, impacting training and race strategies.

Area of Science:

  • Sports Science
  • Exercise Physiology
  • Triathlon Performance Analysis

Background:

  • Olympic Triathlon (OT) involves sequential swim, bike, and run events.
  • Assessing endurance impairment and performance predictors is crucial for triathletes.

Purpose of the Study:

  • To quantify endurance impairment in triathletes after the swim and bike segments of an OT.
  • To evaluate the predictive significance of ventilatory threshold (Tvent) and peak oxygen uptake (VO2peak) for triathlete performance.

Main Methods:

  • Six male triathletes underwent incremental treadmill tests before and after the first two OT segments (1.5 km swim, 32 km bike).
  • Measurements included VO2peak and Tvent.
  • Correlation analysis was used to assess the relationship between physiological measures and race times.

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Main Results:

  • VO2peak decreased from 69 to 64 ml.kg-1.min-1 and Tvent from 58 to 51 ml.kg-1.min-1 (p < 0.01) after the swim and bike segments.
  • Initial VO2peak and Tvent correlated with cycling and running times (P < 0.05).
  • Tvent measured post-segments showed a stronger correlation with running time (p < 0.01).

Conclusions:

  • The initial swim and bike segments of an OT significantly impair triathlete endurance.
  • VO2peak and Tvent are valuable predictors of performance in cycling and running events within a triathlon.
  • Findings are important for optimizing training and race strategies in endurance sports.