Performance Level and Cardiopulmonary Responses during a Cycle-Run Trial

Olivier Hue 1, 2, * Daniel Le Gallais 3, 4, 5 Alain Boussana 3, 4, 6 Didier Chollet 3, 7 Christian Prefaut 3
* Corresponding author
1 ACTES - Adaptations au Climat Tropical, Exercice et Santé
2 Laboratoire Sport, Performance, Santé
3 PhyMedExp - Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046]
4 Centre d'Optimisation de la Performance Motrice
5 Interface Biopsychosociale des A.P.A.
6 EuroMov - Euromov
7 CETAPS - Centre d’études des transformations des activités physiques et sportives
Abstract : To determine the effect of triathlete performance level on the cardiorespiratory responses elicited by the cycle-run succession, eight regionally and nationally-ranked (Competitive) and five internationally-ranked (Elite) male triathletes underwent four successive laboratory trials: 1) an incremental treadmill test, 2) an incremental cycle test, 3) 30 min of cycling followed by 20 min of running (C-R), and 4) a 20-min control run (R) at the same speed as the run in C-R. Before and 10 min after the third and fourth trials the triathletes underwent lung function testing: spirometry and diffusing capacity testing for carbon monoxide (DL(CO)). During the C-R trial blood samples were drawn to measure venous lactate concentration. During all trials ventilatory data were collected every minute using an automated breath-by-breath system. The results showed that 1) the oxygen uptake (VO2) of post-cycling running versus running alone was similar for both groups; 2) the ventilatory responses (VE, VE/VO2, VE/VC02 and f) of C-R running versus R were significantly higher (P < 0.005) for the Competitive group; and 3) a significant decrease (P< 0.05) in DL(CO) was also noted after the C-R trial in the Competitive group but not in the Elite group. We concluded that 1) the ventilatory responses during a run subsequent to cycling may be related to the triathlete performance level, and 2) the C-R trial induced specific alterations in pulmonary function that may be associated with respiratory muscle alteration and exercise-induced hypoxemia in the Competitive triathletes.
Keywords : triathlon elite triathlete performance exercise-induced hypoxemia respiratory muscle fatigue
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Journal articles
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https://hal.univ-antilles.fr/hal-00720719
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Submitted on : Wednesday, July 25, 2012 - 2:56:30 PM
Last modification on : Wednesday, May 29, 2019 - 11:46:02 AM

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  • HAL Id : hal-00720719, version 1

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UNIV-AG | COMUE-NORMANDIE | BS | UNIV-MONTPELLIER | UNIROUEN | IRIHS

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Olivier Hue, Daniel Le Gallais, Alain Boussana, Didier Chollet, Christian Prefaut. Performance Level and Cardiopulmonary Responses during a Cycle-Run Trial. International Journal of Sports Medicine, Thieme Publishing, 2000, 21 (4), pp.250-255. ⟨hal-00720719⟩

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