Int J Sports Med 2008; 29(9): 770-777
DOI: 10.1055/s-2007-989317
Training & Testing

© Georg Thieme Verlag KG Stuttgart · New York

Physiological and Neuromuscular Responses of Competitive Cyclists during a Simulated Self-Paced Interval Training Session

V. Villerius1 , S. Duc1 , F. Grappe1
  • 1Laboratoire de Mécanique Appliquée Robert Chaléat (Equipe Biomécanique et Mécanismes), Institut FEMTO ST , (UMR CNRS 6174), Besançon, France
Further Information

Publication History

accepted after revision October 4, 2007

Publication Date:
17 December 2007 (online)

Abstract

Responses of twelve competitive cyclists performing an interval training session, consisting of three successive 10-min self-paced exercise bouts separated by two 15-min active recovery periods, were studied. Power output (PO), heart rate, pedaling cadence, ventilatory variables, overall ratings of perceived exertion (RPE) and electromyographic (EMG) activity of the vastus lateralis, vastus medialis, biceps femoris and medial hamstrings were recorded during each exercise bout. Mean PO (p < 0.05) decreased significantly across the self-paced bouts, while RPE (p < 0.01) increased significantly. PO and EMG activity did not show significant changes between the 3rd and 9th minute of each self-paced bout. Every self-paced bout showed an oxygen uptake (V˙O2) slow component between the 3rd and 9th minute and there was no effect of bout order on the magnitude of the V˙O2 slow component. This study reveals that during an interval training session, moderately trained competitive cyclists are able to repeat three 10-min self-paced exercise bouts with only a slight decrease in PO (∼ 3 %) and by maintaining unchanged physiological and neuromuscular responses. Moreover, the V˙O2 slow component during each exercise bout was not related to changes in muscle activity, as every exercise bout was performed at a muscular work steady state with a constant PO.

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 Mr.
Vincent Villerius

Institut FEMTO ST (UMR CNRS 6174)
Laboratoire de Mécanique Appliquée Robert Chaléat (Equipe Biomécanique et Mécanismes)

24, rue de l'Epitaphe

25000 Besançon

France

Phone: + 33 (0) 6 75 37 25 26

Fax: + 33 (0) 3 81 66 56 92

Email: vxvillerius@hotmail.com

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