The increase in physical performance and gain in lean and fat mass occur in prepubertal children independent of mode of school transportation. One year data from the prospective controlled Pediatric Osteoporosis Prevention (POP) Study

After adjusting for subjective estimated levels of physical activity and study group (those with extra school exercise classes or not), these results remained unchanged for all variables except for lean mass total body in boys where we found a borderline significance (p = 0.05).

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