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Influence of the allometric scale on the relationships between running economy, mechanical efficiency and performance in long distance runners : running efficiency and long-distance performance prediction

Authors: Peikriszwili Tartaruga, Marcus;

Influence of the allometric scale on the relationships between running economy, mechanical efficiency and performance in long distance runners : running efficiency and long-distance performance prediction

Abstract

Le but de cette thèse était d'analyser la relation entre l’économie de course à pied (ECO) et l'efficiencemécanique (Eff) dans la performance des coureurs spécialistes en moyenne et longue distance, utilisantdes modèles allométriques. Basé dans les résultats de trois études originales, nous avons conclu quel’échelle allométrique peut améliorer la relation entre ECO et performance dans la course à pied demoyenne et longue distance, principalement en coureurs amateurs, pour raison morpho-fonctionnelles.Également, pour cette même population, des travaux mécaniques, principalement le externe, peut êtreconsidérées comme prédicteurs de la performance de la course à pied de sujets spécialistes en longuedistance, et un exposant allométrique peut améliorer cette prédiction. En ce qui concerne à l’Eff, lesrésultats ont montré que cette variable est, aussi, une important variable de prédiction de laperformance. Toutefois, quand appliqué des exposant allométriques, il n'y avait aucune améliorationdans cette prédiction, principalement en coureurs de haut niveau. Les résultats ont montré, aussi, quepour le calcul de l’Eff, la contribution de la dépense énergétique anaérobie est important, parce que,contrairement, les résultats peuvent être surestimés. En général, lorsque l’objectif est prédit laperformance des coureurs amateurs de moyenne ou de longue distance, à travers des puissancesmétaboliques ou mécaniques, est suggéré d'adopter un exposant allométrique spécifique du groupeétudié. Toutefois, lorsque cette prédiction est réalisée avec la utilisation de l’Eff en un groupe decoureurs de haut niveau, l’échelle allométrique n’est pas indiquée.

The aim of this thesis was to use allometric models to analyze the relationship that running economy(ECO) and mechanical efficiency (Ef) have on the performance of middle- and long-distance runners.Based on the results of three original studies, we concluded that allometric scaling can improve therelationship between ECO and performance in recreational middle- and long-distance runners, mainlydue to morphofunctional aspects. Similarly, the mechanical works, especially the external mechanicalwork, may be considered to be predictive of running performance and a specific allometric exponentcan improve these predictions. The results also showed that Ef is an important predictor of theperformance of long-distance runners. However, when the specific allometric exponents were applied,there was no improvement in the prediction of this performance. The results also showed that it isimportant to consider the contribution of anaerobic energy expenditure when calculating Ef, becauseotherwise the results may be overestimated, as already reported in other studies. In general, when theobjective is to predict the performance of middle- or long-distance runners through metabolic ormechanical powers, it is useful to adopt a specific allometric exponent of the group investigated.However, when this prediction is performed considering the Ef, particularly in high-performance longdistancerunners, the allometric application is not necessary.

Country
France
Keywords

Energy cost, Masse corporelle, Running economy, Allometric model, [SHS.EDU]Humanities and Social Sciences/Education, Économie de course, [SHS.EDU] Humanities and Social Sciences/Education, [ SHS.EDU ] Humanities and Social Sciences/Education, Body weight, Coût énergétique, Modèle allométrique

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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