Researchers from the Université Clermont Auvergne found that children not only have fatigue-resistant muscles, but also recover very quickly from high-intensity exercise.
Dr Sébastien Ratel, who led the study, said: “During many physical tasks, children might tire earlier than adults because they have limited cardiovascular capability, tend to adopt less-efficient movement patterns and need to take more steps to move a given distance. “Our research shows children have overcome some of these limitations through the development of fatigue-resistant muscles and the ability to recover very quickly from high-intensity exercise.”
Results revealed that in all tests, the children outperformed the untrained adults. Dr Ratel said: "We found the children used more of their aerobic metabolism and were, therefore, less tired during the high-intensity physical activities. “They also recovered very quickly - even faster than the well-trained adult endurance athletes - as demonstrated by their faster heart-rate recovery and ability to remove blood lactate. "This may explain why children seem to have the ability to play and play and play, long after adults have become tired.”
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