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Effect of muscle temperature on leg extension force and short-term power output in humans

  • Anthony J. Sargeant
Article

Summary

The effect of changing muscle temperature on performance of short term dynamic exercise in man was studied. Four subjects performed 20 s maximal sprint efforts at a constant pedalling rate of 95 crank rev · min−1 on an isokinetic cycle ergometer under four temperature conditions: from rest at room temperature; and following 45 min of leg immersion in water baths at 44; 18; and 12‡ C. Muscle temperature (Tm) at 3 cm depth was respectively 36.6, 39.3, 31.9 and 29.0‡ C. After warming the legs in a 44‡ C water bath there was an increase of ∼11% in maximal peak force and power (PPmax) compared with normal rest while cooling the legs in 18 and 12‡ C water baths resulted in reductions of ∼12% and 21% respectively. Associated with an increased maximal peak power at higher Tm was an increased rate of fatigue. Two subjects performed isokinetic cycling at three different pedalling rates (54, 95 and 140 rev · min−1) demonstrating that the magnitude of the temperature effect was velocity dependent: At the slowest pedalling rate the effect of warming the muscle was to increase PPmax by ∼2% per ‡ C but at the highest speed this increased to ∼10% per ‡ C.

Key words

Anaerobic power Human Muscle Temperature Force-velocity relationship 

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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • Anthony J. Sargeant
    • 1
    • 2
  1. 1.Department of Exercise Physiology and Health Sciences, Faculty of Human Movement SciencesFree UniversityThe Netherlands
  2. 2.Medical Faculty, Academic Medical Centre (AMC)University of AmsterdamAZ AmsterdamThe Netherlands

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