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Specificity effects of run versus cycle training on ventilatory threshold
J J Hoffmann1, S F Loy, B I Shapiro
1Exercise Physiology Laboratory, California State University, Northridge 91330.
Summary
Running and cycling training both improve maximal oxygen consumption. However, ventilatory threshold improvements depend on the training and testing mode, showing a dissociation between VO2 max and ventilatory threshold.
Area of Science:
- Exercise Physiology
- Sports Science
- Cardiorespiratory Fitness
Background:
- Cardiorespiratory fitness is crucial for athletic performance.
- Maximal oxygen consumption (VO2 max) and ventilatory threshold (Thv) are key indicators of cardiorespiratory fitness.
- The influence of training modality on these markers requires further investigation.
Purpose of the Study:
- To compare the effects of 9 weeks of running training (RT) versus cycle training (CT) on ventilatory threshold (Thv).
- To assess Thv changes during both treadmill (TM) and cycle ergometer (CE) testing.
- To investigate the relationship between VO2 max and Thv changes post-training.
Main Methods:
- Sixteen college-age men were divided into RT and CT groups.
- Both groups underwent 9 weeks of progressive training, including continuous and interval exercise.
- Ventilatory threshold and VO2 max were measured using graded exercise tests on TM and CE before and after training.
Main Results:
- Both RT and CT groups significantly improved VO2 max on both TM and CE tests.
- Significant increases in Thv were observed on TM tests for both RT and CT groups.
- Cycle training (CT) led to a significant Thv increase on CE tests, while running training (RT) did not show a significant Thv increase on CE tests.
Conclusions:
- Both running and cycling training enhance VO2 max irrespective of the testing modality.
- Improvements in ventilatory threshold are modality-specific, influenced by both training and testing methods.
- A dissociation exists between changes in VO2 max and Thv, highlighting the nuanced adaptations to different exercise training regimes.
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