Why do children recover from high-intensity exercise faster than adults?
The faster recovery of children from high-intensity exercise is primarily attributed to their lower relative power generation capacity resulting from maturation-dependent neuromotor differences.
Children recover from physical exertion faster than adults, especially, from high-intensity exercise. It is argued that, qualitatively, this is due mainly to dimensional differences but that, predominantly, it is a quantitative difference, stemming from the lower relative power children can generate and from which they need to recover. Children's lesser power capacity is, in turn, likely due to maturation-dependent neuromotor differences.
Falk et al. (2006) studied this question.