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<datestamp>2017-12-21</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>Catecholamine, blood lactate and ventilatory responses to multi-cycle-run blocks</title>
<creator>Hue, Olivier</creator>
<creator>Le Gallais, Daniel</creator>
<creator>Boussana, Alain</creator>
<creator>Galy, Olivier</creator>
<creator>Chamari, Karim</creator>
<creator>Mercier, Betty</creator>
<creator>Prefaut, Christian</creator>
<contributor>Adaptations au Climat Tropical, Exercice et Santé (ACTES) ; Université des Antilles et de la Guyane (UAG)</contributor>
<contributor>Laboratoire Sport, Performance, Santé ; Université Montpellier 1 (UM1)</contributor>
<contributor>Laboratoire de Physiologie des Interactions ; CHU Arnaud de Villeneuve</contributor>
<contributor>Centre d'Optimisation de la Performance Motrice ; Université Montpellier 1 (UM1)</contributor>
<contributor>Interface Biopsychosociale des A.P.A. ; Université Montpellier 1 (UM1)</contributor>
<contributor>Centre d'Optimisation de la Performance Motrice ; Université Montpellier 1 (UM1)</contributor>
<contributor>Research Unit National Center of Medicine and Science in Sport (CNMSS) ; Research Unit National Center of Medicine and Science in Sport</contributor>
<description>International audience</description>
<source>Medicine & Science in Sports & exercise</source>
<publisher>ACSM</publisher>
<identifier>hal-00720475</identifier>
<identifier>https://hal.univ-antilles.fr/hal-00720475</identifier>
<identifier>https://hal.univ-antilles.fr/hal-00720475/document</identifier>
<identifier>https://hal.univ-antilles.fr/hal-00720475/file/Article_2_.pdf</identifier>
<source>https://hal.univ-antilles.fr/hal-00720475</source>
<source>Medicine & Science in Sports & exercise, ACSM, 2000, 32 (9), pp.1582-1586</source>
<language>en</language>
<subject lang=en>triathlon</subject>
<subject lang=en>cycle-run succession</subject>
<subject lang=en>multi-block training</subject>
<subject lang=en>lactate</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>PURPOSE AND METHODS: This study was designed to determine whether the physiological responses elicited during the run part of repeated bouts of cycle-run exercise are similar to those required during the run segment of a cycle-run succession. Thirteen 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) five repeated bouts of 6 min of cycling and 4 min of running (X-CR). During the C-R and X-CR trials, venous blood samples were obtained to measure lactate, epinephrine and norepinephrine concentrations. During all trials, ventilatory data were collected every min using an automated breath-by-breath system. RESULTS: The results showed that 1) the cardiorespiratory responses observed during running were similar in the X-CR and C-R trials, 2) the lactate concentration was similar in both trials, 3) the epinephrine concentration was greater (277.9 +/- 11.9 vs 169.8 +/- 86.7 pg x mL(-1), P < 0.025) in X-CR than in C-R, and 4) the norepinephrine concentration was similar in both trials, except at the first cycle-run succession (T1) of X-CR. CONCLUSION: We concluded that 1) multi-block training is a good method to stimulate the specific adaptations required for the cycle-run succession, and particularly for the cycle-run transition, and 2) multi-block training seems to induce a greater catecholaminergic response, which may be due to a combination of an inherent effect of this type of training and the triathletes' relative lack of experience with it. In any case, the efficacy of the multi-block model needs to be more thoroughly evaluated over the course of a longer-term training program.</description>
<date>2000</date>
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