title: Is there a critical period for bone response to weight-bearing exercise in children and adolescents? a systematic review.
abstract: This systematic review examines and compares the bone mineral changes in children and adolescents, as measured by dual energy x ray absorptiometry, reported in exercise intervention studies. The effects of hormonal factors and growth on bone mineral change during puberty are examined, and the possibility of a critical period during which bone is especially adaptable to exercise is discussed.
authors.affiliation: School of Human Kinetics, University of British Columbia, 6081 University Boulevard, Vancouver, BC V6T 1Z1, Canada.
authors.forename: K J
authors.initials: KJ
authors.lastname: MacKelvie
authors.forename: K M
authors.initials: KM
authors.lastname: Khan
authors.forename: H A
authors.initials: HA
authors.lastname: McKay
mesh_terms: D015502:Absorptiometry, Photon; D000293:Adolescent; D000886:Anthropometry; D015519:Bone Density; D001846:Bone Development; D002113:Calcification, Physiologic / Q000502:physiology*; D002648:Child; D015444:Exercise; D006801:Humans; D011627:Puberty / Q000502:physiology*; D016474:Weight-Bearing