Heart rates in children may reach 220 or even 225 before puberty, but tend to fall to around 200 in their late teens, so the coach should not worry on finding such high rates in exercising youngsters." (Sharp, 1)

This is a demonstration of the distinct physical response of the youth's body, justifying a framing of youth physical activity as separate, different and demanding its own specific scientific attention. This is so because there also exist specific risks to the child which must be considered before shaping or directing an exercise routine. The anaerobic capability of a child -- which denotes the subject's ability to generate and use energy -- will be simultaneously demonstrative of the unique abilities and vulnerabilities of the child. Sharp indicates that "on the anaerobic side, the younger the children, from about 8 to 16, the lower the proportion of anaerobic energy they can generate, and...
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