Age differences in human skeletal muscle fatigue during high-intensity intermittent exercise.
It has been shown at similar relative work rates that children have higher resistance to fatigue than adults during repeated bouts of high-intensity exercise. This age-related difference in fatigue resistance may be explained by factors including muscle mass, muscle morphology, energy metabolism and neuromuscular activation.


CONCLUSIONS
During high-intensity intermittent exercise, recovery periods play an important role in limiting fatigue. Age-related differences in fatigue resistance could also be explained by differences in the rates of resynthesis of some energetic substrates and the rates of removal of various muscle metabolites.
Ratel
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Laboratoire Interuniversitaire de Biologie des Activités Physiques et Sportives, UFR de Médecine, Université d'Auvergne, France. sratel@wanadoo.fr
Lazaar
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N
Williams
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CA
Bedu
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M
Duché
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P
D000367:Age Factors; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D018763:Muscle Fatigue / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D010807:Physical Endurance / Q000502:physiology