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Maximal Lactate Accumulation Rate in All-out Exercise Differs between Cycling and Running
Oliver Jan Quittmann1, Yannick Max Schwarz1, Jonas Mester2
1Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany.
International Journal of Sports Medicine
|November 2, 2020
Summary
Maximal lactate accumulation rate (V̇ Lamax) is reliable and higher in running versus cycling. However, power output (Pmax) is reliable and correlates between modalities, suggesting sport-specific V̇ Lamax testing is crucial.
Area of Science:
- Exercise Physiology
- Sports Science
- Biotechnology
Background:
- Understanding physiological responses across different exercise modalities is crucial for athlete training and performance.
- Maximal lactate accumulation rate (V̇ Lamax) and peak power output (Pmax) are key performance indicators.
- Reliability and correlation of these measures between cycling and running are not well-established in competitive athletes.
Purpose of the Study:
- To compare the reliability and differences in V̇ Lamax and Pmax between cycling and running.
- To investigate the correlation of V̇ Lamax and Pmax between cycling and running modalities.
- To provide sport-specific recommendations for testing these physiological parameters.
Main Methods:
- Eighteen competitive triathletes completed two maximal 15-s cycling ergometer tests and two 100-m running sprint tests, separated by one week.
- V̇ Lamax and Pmax were measured for each modality.
- Two-way ANOVA was used to analyze differences between trials and modalities; reliability was assessed using Intraclass Correlation Coefficients (ICC).
Main Results:
- Both V̇ Lamax and Pmax demonstrated good to excellent reliability (ICC > 0.86) in both cycling and running.
- V̇ Lamax was significantly higher in running compared to cycling (p=0.016), while Pmax was significantly lower in running (p < 0.001).
- Pmax showed a strong positive correlation between cycling and running (r=0.811, p < 0.001), but V̇ Lamax did not correlate (r=0.418, p=0.084).
Conclusions:
- Maximal lactate accumulation rate (V̇ Lamax) is highly reliable but modality-specific, being higher in running than cycling.
- Peak power output (Pmax) is reliable and correlates between cycling and running, suggesting transferable performance characteristics.
- Given the lack of correlation, V̇ Lamax should be assessed independently for each sport (cycling and running) to inform training.
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