Sport Specialization, Physical Performance and Injury History in Canadian Junior High School Students

# Background Youth sports participation is encouraged for proposed physical and psychological benefits. However early sport specialization and the potentially negative consequences may be a cause for concern. # Purpose To describe sport specialization in Canadian youth and investigate association...

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Autores principales:	Chris Whatman, Carla van den Berg, Luz Palacios-Derflingher, Carolyn Emery
Formato:	article
Lenguaje:	EN
Publicado:	North American Sports Medicine Institute 2021
Materias:	Sports medicine RC1200-1245
Acceso en línea:	https://doaj.org/article/05ed959e35764803af016a2581cddc99
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spelling	oai:doaj.org-article:05ed959e35764803af016a2581cddc992021-12-02T00:38:44ZSport Specialization, Physical Performance and Injury History in Canadian Junior High School Students2159-2896https://doaj.org/article/05ed959e35764803af016a2581cddc992021-11-01T00:00:00Zhttps://ijspt.scholasticahq.com/article/29590-sport-specialization-physical-performance-and-injury-history-in-canadian-junior-high-school-students.pdfhttps://doaj.org/toc/2159-2896# Background Youth sports participation is encouraged for proposed physical and psychological benefits. However early sport specialization and the potentially negative consequences may be a cause for concern. # Purpose To describe sport specialization in Canadian youth and investigate associations with previous injury and physical performance. # Study design Cross-sectional study. # Methods Junior high school students (grades 7-9, ages 11-16) were invited to participate. All participants completed a questionnaire capturing specialization level (low, moderate, high; based on year-round training, exclusion of other sports, and single-sport training) and injury history in the previous 12-months. Additionally, all participants completed physical performance measures including vertical jump (cm), predicted VO2max (mL/kg/min), single-leg balance (secs) and Y-Balance composite score (%). Logistic regression examined the association between school grade, school size, sex and sport specialization (Objective 1) and the association between sport specialization and injury history (Objective 2). Multivariable linear regression analyses (4) assessed associations between sport specialization category and physical performance measures (Objective 3). # Results Two hundred and thirty-eight students participated in the study. Eighteen percent of participants reported high specialization, with no significant associations between sex, grade or school size and specialization category. There was no significant difference in the odds of sustaining previous injury between participants reporting moderate (odds ratio [OR]=1.94, 95% CI 0.86-4.35) or high (OR=2.21, 95% CI 0.43-11.37) compared to low specialization. There were no significant differences in vertical jump height (mean diff [MD] = -0.4 to 2.1cm), predicted VO2max (MD = 2.2 to 3.1mL/kg/min), single leg balance (MD = 0.5 to 1.9sec) or Y-balance (MD = 0.6 to 7.0%) between sport specialization categories. # Conclusions Sport specialization exists in Canadian junior high schools but may be less common than previously reported and it was not associated with sex, grade, or school size. Level of specialization was not associated with history of injury nor a range of physical performance measures. # Level of Evidence Level 3Chris WhatmanCarla van den BergLuz Palacios-DerflingherCarolyn EmeryNorth American Sports Medicine InstitutearticleSports medicineRC1200-1245ENInternational Journal of Sports Physical Therapy, Vol 16, Iss 6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sports medicine RC1200-1245
spellingShingle	Sports medicine RC1200-1245 Chris Whatman Carla van den Berg Luz Palacios-Derflingher Carolyn Emery Sport Specialization, Physical Performance and Injury History in Canadian Junior High School Students
description	# Background Youth sports participation is encouraged for proposed physical and psychological benefits. However early sport specialization and the potentially negative consequences may be a cause for concern. # Purpose To describe sport specialization in Canadian youth and investigate associations with previous injury and physical performance. # Study design Cross-sectional study. # Methods Junior high school students (grades 7-9, ages 11-16) were invited to participate. All participants completed a questionnaire capturing specialization level (low, moderate, high; based on year-round training, exclusion of other sports, and single-sport training) and injury history in the previous 12-months. Additionally, all participants completed physical performance measures including vertical jump (cm), predicted VO2max (mL/kg/min), single-leg balance (secs) and Y-Balance composite score (%). Logistic regression examined the association between school grade, school size, sex and sport specialization (Objective 1) and the association between sport specialization and injury history (Objective 2). Multivariable linear regression analyses (4) assessed associations between sport specialization category and physical performance measures (Objective 3). # Results Two hundred and thirty-eight students participated in the study. Eighteen percent of participants reported high specialization, with no significant associations between sex, grade or school size and specialization category. There was no significant difference in the odds of sustaining previous injury between participants reporting moderate (odds ratio [OR]=1.94, 95% CI 0.86-4.35) or high (OR=2.21, 95% CI 0.43-11.37) compared to low specialization. There were no significant differences in vertical jump height (mean diff [MD] = -0.4 to 2.1cm), predicted VO2max (MD = 2.2 to 3.1mL/kg/min), single leg balance (MD = 0.5 to 1.9sec) or Y-balance (MD = 0.6 to 7.0%) between sport specialization categories. # Conclusions Sport specialization exists in Canadian junior high schools but may be less common than previously reported and it was not associated with sex, grade, or school size. Level of specialization was not associated with history of injury nor a range of physical performance measures. # Level of Evidence Level 3
format	article
author	Chris Whatman Carla van den Berg Luz Palacios-Derflingher Carolyn Emery
author_facet	Chris Whatman Carla van den Berg Luz Palacios-Derflingher Carolyn Emery
author_sort	Chris Whatman
title	Sport Specialization, Physical Performance and Injury History in Canadian Junior High School Students
title_short	Sport Specialization, Physical Performance and Injury History in Canadian Junior High School Students
title_full	Sport Specialization, Physical Performance and Injury History in Canadian Junior High School Students
title_fullStr	Sport Specialization, Physical Performance and Injury History in Canadian Junior High School Students
title_full_unstemmed	Sport Specialization, Physical Performance and Injury History in Canadian Junior High School Students
title_sort	sport specialization, physical performance and injury history in canadian junior high school students
publisher	North American Sports Medicine Institute
publishDate	2021
url	https://doaj.org/article/05ed959e35764803af016a2581cddc99
work_keys_str_mv	AT chriswhatman sportspecializationphysicalperformanceandinjuryhistoryincanadianjuniorhighschoolstudents AT carlavandenberg sportspecializationphysicalperformanceandinjuryhistoryincanadianjuniorhighschoolstudents AT luzpalaciosderflingher sportspecializationphysicalperformanceandinjuryhistoryincanadianjuniorhighschoolstudents AT carolynemery sportspecializationphysicalperformanceandinjuryhistoryincanadianjuniorhighschoolstudents
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Sport Specialization, Physical Performance and Injury History in Canadian Junior High School Students

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