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Catecholamine, blood lactate and ventilatory responses to multi-cycle-run blocks
O Hue1, D Le Gallais, A Boussana
1Laboratoire Sport, Performance, Santé, UPRES-EA, UFR-STAPS, Montpellier, France. HueO@wanadoo.fr
Medicine and Science in Sports and Exercise
|September 20, 2000
Summary
Multi-block cycle-run training elicits similar physiological responses to continuous cycle-run exercise, but with a greater catecholamine response. This training method may enhance adaptations for triathlon transitions.
Area of Science:
- Exercise Physiology
- Sports Science
- Triathlon Training
Background:
- Repeated bouts of cycle-run exercise are crucial for triathletes.
- Understanding physiological responses during transitions is key for performance.
Purpose of the Study:
- To compare physiological responses during the running phase of repeated cycle-run bouts versus a continuous cycle-run bout.
- To investigate the impact of multi-block training on physiological markers in triathletes.
Main Methods:
- Thirteen male triathletes completed four trials: incremental treadmill, incremental cycle, continuous cycle-run (C-R), and repeated cycle-run bouts (X-CR).
- Cardiorespiratory data were collected continuously.
- Lactate, epinephrine, and norepinephrine concentrations were measured from venous blood samples.
Main Results:
- Cardiorespiratory responses during running were similar between X-CR and C-R trials.
- Lactate concentrations were comparable across both cycle-run protocols.
- Epinephrine levels were significantly higher in the X-CR trial compared to C-R.
- Norepinephrine levels were similar, except at the initial transition in X-CR.
Conclusions:
- Multi-block training effectively stimulates adaptations for cycle-run succession, particularly the transition phase.
- This training appears to induce a greater catecholaminergic response, potentially due to training type and athlete experience.
- Further long-term evaluation is needed to confirm the efficacy of multi-block training models.