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Exercise economy in skiing and running.
Thomas Losnegard1, Daniela Schäfer1, Jostein Hallén1
1Department of physical performance, Norwegian School of Sport Sciences Oslo, Norway.
Frontiers in Physiology
|January 31, 2014
Summary
Highly trained athletes show significant differences in exercise economy. While VO2peak, body mass, and height explain some variation, other intrinsic factors likely play a larger role in performance differences.
Area of Science:
- Sports Science
- Exercise Physiology
- Biomechanics
Background:
- Significant inter-individual variability in exercise economy is observed even among elite endurance athletes.
- Intrinsic factors are hypothesized to contribute significantly to these variations in performance.
Purpose of the Study:
- To compare exercise economy across three distinct disciplines: V2-skating, double poling, and uphill running.
- To investigate the correlation between exercise economy and intrinsic factors such as VO2peak, body mass, and height in highly trained athletes.
Main Methods:
- Ten elite male cross-country skiers participated in the study.
- Exercise economy and peak oxygen consumption (VO2peak) were measured during treadmill running, V2-skating, and double poling.
- Correlation analysis was employed to compare exercise economy across disciplines and with intrinsic factors.
Main Results:
- Strong correlations in exercise economy were found between V2-skating and double poling (r=0.81), and large correlations between V2-skating and running (r=0.53), and double poling and running (r=0.58).
- Correlations between exercise economy and VO2peak, cycling rate, body mass, and body height were trivial to moderate.
- Intrinsic factors like VO2peak, body mass, and height explained only a moderate portion of the inter-individual variation in exercise economy.
Conclusions:
- Inter-individual differences in exercise economy among highly trained athletes are only moderately explained by VO2peak, body mass, and height.
- Other unidentified intrinsic factors appear to significantly influence exercise economy variations in elite endurance athletes.
Keywords:
cross country skierscross-country skiinginter-individual variationsintra-individual variationsrunningMore Related Videos
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