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<publisher>HAL CCSD</publisher>
<title lang=en>The influence of prior cycling on biomechanical and cardiorespiratory response profiles during running in triathletes</title>
<creator>Hue, Olivier</creator>
<creator>Le Gallais, Daniel</creator>
<creator>Chollet, Didier</creator>
<creator>Boussana, Alain</creator>
<creator>Prefaut, Christian</creator>
<contributor>Adaptations au Climat Tropical, Exercice et Santé (ACTES) ; Université des Antilles et de la Guyane (UAG)</contributor>
<contributor>Centre d'Optimisation de la Performance Motrice ; Université Montpellier 1 (UM1)</contributor>
<contributor>Laboratoire de Physiologie des Interactions ; CHU Arnaud de Villeneuve</contributor>
<contributor>Interface Biopsychosociale des A.P.A. ; Université Montpellier 1 (UM1)</contributor>
<contributor>Centre d’études des transformations des activités physiques et sportives (CETAPS) ; Université de Rouen Normandie (URN) ; Normandie Université (NU) - Normandie Université (NU)</contributor>
<contributor>Centre d'Optimisation de la Performance Motrice ; Université Montpellier 1 (UM1)</contributor>
<contributor>Euromov (EuroMov) ; Université de Montpellier (UM) - Institut National de la Santé et de la Recherche Médicale (INSERM) - Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)</contributor>
<description>International audience</description>
<source>EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY</source>
<identifier>hal-00720703</identifier>
<identifier>https://hal.univ-antilles.fr/hal-00720703</identifier>
<identifier>https://hal.univ-antilles.fr/hal-00720703/document</identifier>
<identifier>https://hal.univ-antilles.fr/hal-00720703/file/EJAP.pdf</identifier>
<source>https://hal.univ-antilles.fr/hal-00720703</source>
<source>EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY, 1998, 77, pp.98-105</source>
<language>en</language>
<subject lang=en>Triathlon</subject>
<subject lang=en>cardiorespiratory variables</subject>
<subject lang=en>stride length</subject>
<subject lang=en>stride frequency</subject>
<subject lang=en>cycle-run transition</subject>
<subject>[SDV.OT] Life Sciences [q-bio]/Other [q-bio.OT]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The aim of the present study was to determine the effects of 40 km of cycling on the biomechanical and cardiorespiratory responses measured during the running segment of a classic triathlon, with particular emphasis on the time course of these responses. Seven male triathletes underwent four successive laboratory trials: (1) 40 km of cycling followed by a 10-km triathlon run (TR), (2) a 10-km control run (CR) at the same speed as TR, (3) an incremental treadmill test, and (4) an incremental cycle test. The following ventilatory data were collected every minute using an automated breath-by-breath system: pulmonary ventilation VE, l x min[-1]), oxygen uptake (VO2, ml x min(-1) x kg[-1]), carbon dioxide output (ml x min[-1]), respiratory equivalents for oxygen (VE/VO2) and carbon dioxide (VE/VCO2), respiratory exchange ratio (R) respiratory frequency (f, breaths x min[-1]), and tidal volume (ml). Heart rate (HR, beats x min[-1]) was monitored using a telemetric system. Biomechanical variables included stride length (SL) and stride frequency (SF) recorded on a video tape. The results showed that the following variables were significantly higher (analysis of variance, P < 0.05) for TR than for CR: VO2 [51.7 (3.4) vs 48.3 (3.9) ml x kg(-1) x min(-1), respectively], VE [100.4 (1.4) l x min(-1) vs 84.4 (7.0) l x min(-1)], VE/VO2 [24.2 (2.6) vs 21.5 (2.7)] VE/VCO2 [25.2 (2.6) vs 22.4 (2.6)], f[55.8 (11.6) vs 49.0 (12.4) breaths x min(-1)] and HR [175 (7) vs 168 (9) beats x min(-1)]. Moreover, the time needed to reach steady-state was shorter for HR and VO2 (1 min and 2 min, respectively) and longer for VE (7 min). In contrast, the biomechanical parameters, i.e. SL and SF, remained unchanged throughout TR versus CR. We conclude that the first minutes of the run segment after cycling in an experimental triathlon were specific in terms of VO2 and cardiorespiratory variables, and nonspecific in terms of biomechanical variables.</description>
<date>1998</date>
</dc>
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