Adjustments in the force-frequency relationship during passive and exercise-induced hyperthermia
| Autor: | Sebastien Racinais, Martin W. Thompson, Julien D. Périard |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Hyperthermia
medicine.medical_specialty Knee extensors Physiology business.industry Stimulation Core temperature medicine.disease Cellular and Molecular Neuroscience Muscle nerve Physiology (medical) Internal medicine medicine Cardiology Physical therapy Neurology (clinical) Skeletal muscle fatigue Twitch force Force frequency business |
| Zdroj: | Muscle & Nerve. 50:822-829 |
| ISSN: | 0148-639X |
| Popis: | Introduction: We examined the extent to which fatiguing cycling exercise in the heat influences contractile function in modulating the force–frequency relationship. Methods: Before (∽37.0°C) and after (∽38.5°C) exercise (ExH) and passive (PaH) hyperthermia, an 8-s train of stimulation at 10, 20, 50, and 100 Hz (2 s per frequency) and a potentiated twitch were evoked on the relaxed knee extensors using percutaneous stimulation. Results: ExH and PaH produced a decrease in the 20:50 Hz force ratio, indicative of low-frequency fatigue (P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text