Muscle Oxygenation Responses to Low-intensity Steady Rate Concentric and Eccentric Cycling

Mark Rakobowchuk, Laurie Isacco, Ophélie Ritter, Alicia González Represas, Malika Bouhaddi, Bruno Degano, Nicolas Tordi, Laurent Mourot

Результат исследований: Материалы для журналаСтатьярецензирование

5 Цитирования (Scopus)


Muscle deoxygenation responses provide information about the training impulse of an exercise session enabling adaptation to be predicted. Our aim was to investigate muscle oxygenation profiles during prolonged low-intensity eccentric and concentric cycling. Twelve healthy men performed two 45-min exercise sessions of concentric (CON) and eccentric (ECC) cycling, matched for the same heart rate at the start of each session. Mechanical power output during ECC was ∼2.5 times that of CON (210±40 W vs. 82±16 W). Oxygen uptake, blood lactate, cardiac output and systolic arterial pressure responses did not differ between exercises. Heart rate was similar at 5 min of each exercise bout but progressively increased during ECC and was higher at 15, 30 and 45 min of ECC compared to CON (+10 bpm), with a trend for a lower stroke volume. Diastolic and mean blood pressures were higher during ECC. No significant differences were observed in muscle oxygenation profiles. Muscle oxygenation responses during prolonged low-intensity exercise were not affected by the type of muscle action at the same metabolic demand and cardiac output.

Язык оригиналаАнглийский
Страницы (с-по)173-180
Число страниц8
ЖурналInternational Journal of Sports Medicine
Номер выпуска3
СостояниеОпубликовано - 1 фев 2018

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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