Jacobs Journal of Physiotherapy and Exercise Evaluation of Autonomic Function after Concentric and Eccentric Cycling Exercise at Different Pedalling Frequencies - Université de Franche-Comté Accéder directement au contenu
Article Dans Une Revue Jacobs Journal of Physiotherapy and Exercic Année : 2016

Jacobs Journal of Physiotherapy and Exercise Evaluation of Autonomic Function after Concentric and Eccentric Cycling Exercise at Different Pedalling Frequencies

Résumé

Compared to concentric exercise, eccentric cycling is characterized by a lower cardiovascular and metabolic cost. However, its effects on the autonomic nervous system and the effects of pedalling frequency are little known. Eleven healthy subjects participated in this study. Cardiorespiratory variables were assessed during concentric and eccentric cycling performed with 3 different pedalling frequencies and post-exercise parasympathetic reactivation (heart rate recovery during the first 60 seconds of recovery and its normalized value; HRR60 and nHRR60) was studied. Cardiorespiratory responses were significantly lower during eccentric than concentric cycling. Heart rate recovery metrics were lower after eccentric than concentric cycling. In particular nHRR60 was 0.19 ± 0.11 vs 0.26 ± 0.11, after eccentric vs concentric exercise at 30 revolutions per minute respectively; 0.13 ± 0.22 vs 0.28 ± 0.11 at 40 rpm and; 0.12 ± 0.14 vs 0.26 ± 0.10 at 60 rpm showing an attenuated post-exercise parasympathetic reactivation after eccentric exercise. While no change was observed during concentric exercise, increasing the pedalling frequencies lowered the cardiopulmonary solicitation during eccentric cycling. A trend for a delayed post-exercise parasympathetic reactivation was also observed when the pedalling frequency increased (p = 0.057). These results highlighted that eccentric cycling imposed a greater strain on the autonomic nervous system than concentric cycling at the same power output despite a lower cardiorespiratory requirement.
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hal-04060269 , version 1 (06-04-2023)

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  • HAL Id : hal-04060269 , version 1

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Nicolas Tordi. Jacobs Journal of Physiotherapy and Exercise Evaluation of Autonomic Function after Concentric and Eccentric Cycling Exercise at Different Pedalling Frequencies. Jacobs Journal of Physiotherapy and Exercic, 2016. ⟨hal-04060269⟩

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