Modification of Cycling Biomechanics During a Swim-to-Cycle Trial

Anne Delextrat; Véronique Tricot; Thierry Bernard; Fabrice Vercruyssen; Christophe Hausswirth; Jeanick Brisswalter

Modification of Cycling Biomechanics During a Swim-to-Cycle Trial

Anne Delextrat ¹ Véronique Tricot ¹ Thierry Bernard ¹ Fabrice Vercruyssen ¹ Christophe Hausswirth ² Jeanick Brisswalter ¹

1 UTLN - Université de Toulon

2 INSEP - Institut national du sport et de l'éducation physique

Abstract : The aim of this study was to investigate the effects of drafting, i.e., swimming directly behind a competitor, on biomechanical adaptation during subsequent cycling. Eight well-trained male triathletes underwent three submaximal sessions in a counterbalanced order. These sessions comprised a 10-min ride on a bicycle ergometer at 75% of maximal aerobic power (MAP) at a freely chosen cadence. This exercise was preceded either by a 750-m swim performed alone at competition pace (SCA trial: swimming-cycling alone), a 750-m swim in a drafting position at the same pace as during SCA (SCD trial: swimming-cycling with drafting), or a cycling warm-up at 30% of MAP for the same duration as the SCA trial (CTRL trial). The results indicated that the decrease in metabolic load when swimming in a drafting position (SCD trial) was associated with a signifi cantly lower pedal rate and signifi cantly higher mean and peak resultant torques when compared to the SCA trial, p < 0.05. These results could be partly explained by the lower relative intensity during swimming in the SCD trial when compared with the SCA trial, involving a delayed manifestation of fatigue in the muscles of the lower limbs at the onset of cycling.

Keywords : pedal rate resultant torque asymmetry neuromuscular fatigue

Type de document :

Article dans une revue

Domaine :

Sciences de l'Homme et Société / Sport

Sciences de l'Homme et Société / Sport / Physiologie du sport

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https://hal-insep.archives-ouvertes.fr/hal-01762706
Contributeur : Documentation Insep <>
Soumis le : mardi 10 avril 2018 - 13:32:16
Dernière modification le : jeudi 7 février 2019 - 15:52:08

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