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• W2034923044 abstract "L'évolution du coût énergétique en fonction de l'augmentation de l'intensité relative de l'exercise est comparée chez trois populations de coureurs de longues et de moyennes distances (1 500 m, 3 000–5 000 m, marathon), afin de déterminer un possible effet de la spécificité de l'entraînement sur ce paramètre. Aux intensités submaximales (entre 65,9 ± 2,03% et 87,8 ± 2,8% de VO 2 max), les valeurs du coût énergétique ne sont pas significativement différentes entre les trois populations. Dans les intensités de course où le métabolisme n'est pas strictement aérobie, on observe des différentes statistiquement significatives entre les trois populations. Les valeurs de coût énergétiques sont significativement plus basses chez les marathoniens pour des intensités faibles (49,5 ± 2,5% et 57,4 ± 2,5% de VO 2 max) ( P < 0,01), et chez les coureurs de 1 500 m, lors du dernier palier (100% de VO 2 max) ( P < 0,01). Les coureurs de 3 000–5 000 m semblent représenter une population intermédiaire proche des coureurs de 1 500 m au début de l'effort et se rapproachant des marathoniens aux vitesses plus élevées. Ces résultats indiquent que, dans la zone de travail strictement aérobie, la spécialité de compétition ne représente pas un paramètre distinctif permettant de déterminer un effet du type d'entraînement sur les valeurs de coût énergétique. Energy cost of running defined as the amount of energy spent per unit distance has been shown to account for a large and significant proportion of variation in distance running performance among runners roughly comparable in VO 2 max (di Prampero, 1986; Morgan et al , 1989) . Limited data from longitudinal and cross-sectional research suggests that training was linked with a decrease in energy. The purpose of the present research was to examine the relation between training and energy spent during a run on a treadmill leading to exhaustion, by comparing the energy cost of athletes engaged in different events (1 500 m, 3 000–5 000 m, marathon). During submaximal running (between 65.2 ± 2.03% and 87.8 ± 2.8% VO 2 max), we observed no significant difference in energy cost between long distance and middle distance runners (table II). However, we have shown that the relation between velocity and VO 2 during submaximal running was not really linear in marathons and 3 000–5 000 m runners. In these groups, the energy cost increased significantly between 65.2 ± 2.03 and 87.8 ± 2.8% VO 2 max (P < 0,01) (fig 1). When the conditions are not strictly aerobic, the values for energy cost differed between the three populations at the significant level of P < 0,01. Marathon values were lower at the first levels of intensity (49.6 ± 2,5% and 57.4 ± 2.5% VO 2 max), and 1 500 m values were lower at the last level (100% VO 2 max). The 3 000–5 000 m runners appear to be a middle population very close to 1 500 m runners at the beginning of exertion and to marathon runners for high levels of intensity. These results suggest that during submaximal running, running speciality does not represent an homogeneity of training state. Therefore, it seems difficult to evaluate the effects of training on energy cost by comparing values of energy cost among long and middle distance runners." @default.
• W2034923044 created "2016-06-24" @default.
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• W2034923044 date "1992-01-01" @default.
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• W2034923044 title "Comparaison du coût énergétique dans trois populations de coureurs de longues et de moyennes distances" @default.
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• W2034923044 doi "https://doi.org/10.1016/s0765-1597(05)80094-2" @default.
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