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Physiological Correlations With Short, Medium, and Long Cycling Time-Trial Performance.
Fernando K Borszcz1, Artur F Tramontin1, Kristopher M de Souza2
1a Santa Catarina State University.
Research Quarterly for Exercise and Sport
|January 16, 2018
Summary
Physiological predictors strongly correlate with long cycling endurance performance, but less so for shorter durations. Maximal aerobic power is key for all time trials, with metabolic thresholds crucial for longer events.
Area of Science:
- Exercise Physiology
- Sports Science
- Cycling Performance
Background:
- Physiological variables are known predictors of cycling endurance.
- The influence of performance duration on these predictors remains unclear.
Purpose of the Study:
- To assess correlations between physiological variables and cycling time trials of varying durations.
- Investigate how different time trial lengths affect predictor relevance.
Main Methods:
- Twenty trained male cyclists completed an incremental exercise test and three maximal cycling time trials (5, 20, and 60 minutes).
- Maximal oxygen uptake (VO2max), peak power output, lactate threshold, and ventilatory thresholds were measured.
Main Results:
- Physiological measures showed stronger correlations with longer (60 min) cycling performances compared to shorter durations.
- Time-trial mean power output correlated highly with peak power output (r=0.61-0.87) and VO2max (r=0.72-0.89).
- Moderate to high correlations were observed between mean power output and lactate threshold/ventilatory thresholds (r=0.52-0.82).
Conclusions:
- Trained cyclists should prioritize maximal aerobic power for all time trial durations.
- Enhancing metabolic thresholds is particularly important for improving long-duration cycling performance.
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