Muscle cooling modulates tissue oxidative and biochemical responses but not energy metabolism during exercise
| Autor: | Stephanie Munten, Laura Williams, Curtis Hancock, Alexus McCue, David C. Marsh, Dominique D. Gagnon, Nicholas T. Beckett‐Brown, Jeffrey Gagnon |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Male Cardiac output medicine.medical_specialty Physiology Hemodynamics Body Temperature 03 medical and health sciences Oxygen Consumption 0302 clinical medicine Heart Rate Hypothermia Induced Physiology (medical) Internal medicine Heart rate medicine Humans Orthopedics and Sports Medicine Respiratory system Muscle Skeletal Exercise business.industry Public Health Environmental and Occupational Health Skeletal muscle 030229 sport sciences General Medicine Stroke volume Venous blood Carbon Dioxide Lipid Metabolism Hormones Oxygen medicine.anatomical_structure Endocrinology Female Energy Metabolism business Ventilatory threshold 030217 neurology & neurosurgery |
| Zdroj: | European Journal of Applied Physiology. 120:1761-1775 |
| ISSN: | 1439-6327 1439-6319 |
| Popis: | This study investigated whether muscle cooling and its associated effects on skeletal muscle oxidative responses, blood gases, and hormonal concentrations influenced energy metabolism during cycling. Twelve healthy participants (Males: seven; Females: five) performed two steady-state exercise sessions at 70% of ventilatory threshold on a cycle ergometer. Participants completed one session with pre-exercise leg cooling until muscle temperature (Tm) decreased by 6 °C (LCO), and a separate session without cooling (CON). They exercised until Tm returned to baseline and for an additional 30 min. Cardiovascular, respiratory, metabolic, hemodynamic variables, and skeletal muscle tissue oxidative responses were assessed continuously. Venous blood samples were collected to assess blood gases, and hormones. Heart rate, stroke volume, and cardiac output all increased across time but were not different between conditions. VO2 was greater in LCO when muscle temperature was restored until the end of exercise (p |
| Databáze: | OpenAIRE |
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