Childhood physical activity and pubertal timing: findings from the LEGACY girls study
Kehm R, Knight J, Houghton L, McDonald J, Schwartz L, Goldberg M, Chung W, Frost C, Wei Y, Bradbury A, Keegan T, Daly M, Buys S, Andrulis I, John E, Terry M. Childhood physical activity and pubertal timing: findings from the LEGACY girls study. International Journal Of Epidemiology 2024, 53: dyad193. PMID: 38205889, PMCID: PMC10859159, DOI: 10.1093/ije/dyad193.Peer-Reviewed Original ResearchConceptsBreast cancer family historyBody mass index-for-age z-scorePhysical activityChildhood physical activityCancer family historyLEGACY Girls StudyAssociated with later menarcheParametric survival regression modelsOrganized PAMetabolic equivalentsInverse oddsEarly childhoodSociodemographic factorsEffect modificationAssociated with ageLater menarcheNorth American cohortFamily historySurvival regression modelsStudy enrollmentMiddle childhoodAmerican cohortQuestionnaire dataPotential mediatorsZ-score