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Part 1 - Psychological perspectives: intensive sport participation and the prepubescent athlete - competitive stress and burnout (Daniel Gould) psychological effects of intensive sport participation on children and youth - self-esteem and motivation (Maureen R. Weiss). Part 2 Sociological perspectives: social dimensions of intensive training and participation in youth sports (Jay Coakley) problems associated with youth involvement in high-performance sport (Peter Donnelly). Part 3 Physiological perspectives: benefits and risks of resistance training in children (Cameron J.R. Blimkie) the physiological impact of intensive training on the prepubertal athlete (Thomas W. Rowland). Part 4 Clinical/pathological perspectives: musculoskeletal adaptations and injuries associated with intense participation in youth sports (W Ben Kibler and T. Jeff Chandler) intensive training in the young athlete - pathoanatomic change (Bert R. Mandelbaum).
A Wed, study studied this question.