A Cross-Sectional Observation on Maximal Eccentric Hamstring Strength in 7- to 15-Year-Old Competitive Alpine Skiers

Severe knee injuries are common in alpine skiing and the hamstring muscles are known to counteract the anterior tibial displacement that typically accompanies major injury mechanisms. This study aimed to assess the Maximal Eccentric Hamstring Strength (MEHS) of youth competitive alpine skiers during...

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Autores principales:	Kirsten Kiers, Lynn Ellenberger, Marie Javet, Björn Bruhin, Walter O. Frey, Jörg Spörri
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	skiing athletes biological maturity status conditioning injury prevention neuromuscular performance Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/04798aa3bce34612914e55552ca30767
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spelling	oai:doaj.org-article:04798aa3bce34612914e55552ca307672021-11-25T16:47:15ZA Cross-Sectional Observation on Maximal Eccentric Hamstring Strength in 7- to 15-Year-Old Competitive Alpine Skiers10.3390/biology101111282079-7737https://doaj.org/article/04798aa3bce34612914e55552ca307672021-11-01T00:00:00Zhttps://www.mdpi.com/2079-7737/10/11/1128https://doaj.org/toc/2079-7737Severe knee injuries are common in alpine skiing and the hamstring muscles are known to counteract the anterior tibial displacement that typically accompanies major injury mechanisms. This study aimed to assess the Maximal Eccentric Hamstring Strength (MEHS) of youth competitive alpine skiers during Nordic Hamstring Exercise (NHE) in terms of dependence of sex, age and biological maturation. A total of 246 7- to 15-year-old skiers were tested with respect to their MEHS using an NHE-based measurement device (Vald Performance, Newstead, Australia). Significantly greater absolute MEHS was observed in skiers of the under 15 years (U15) category compared to skiers under 10 years old (U10) (227.9 ± 61.1 N vs. 142.6 ± 28.9 N; <i>p</i> < 0.001), also when grouped by sex. Absolute MEHS was revealed to be lower in U15 females compared to males (213.5 ± 49.0 N vs. 241.9 ± 68.4 N; <i>p</i> = 0.001); in U10 skiers there was no sex difference. For all age groups and sexes, absolute MEHS values were significantly correlated with age and biological maturation (<i>p</i> < 0.001). However, when normalized to body weight such associations disappeared, which is why this is strongly recommended when testing around their growth spurt. Overall, this study established sport-specific normative reference data that may be of interest to researchers and sport practitioners alike.Kirsten KiersLynn EllenbergerMarie JavetBjörn BruhinWalter O. FreyJörg SpörriMDPI AGarticleskiingathletesbiological maturity statusconditioninginjury preventionneuromuscular performanceBiology (General)QH301-705.5ENBiology, Vol 10, Iss 1128, p 1128 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	skiing athletes biological maturity status conditioning injury prevention neuromuscular performance Biology (General) QH301-705.5
spellingShingle	skiing athletes biological maturity status conditioning injury prevention neuromuscular performance Biology (General) QH301-705.5 Kirsten Kiers Lynn Ellenberger Marie Javet Björn Bruhin Walter O. Frey Jörg Spörri A Cross-Sectional Observation on Maximal Eccentric Hamstring Strength in 7- to 15-Year-Old Competitive Alpine Skiers
description	Severe knee injuries are common in alpine skiing and the hamstring muscles are known to counteract the anterior tibial displacement that typically accompanies major injury mechanisms. This study aimed to assess the Maximal Eccentric Hamstring Strength (MEHS) of youth competitive alpine skiers during Nordic Hamstring Exercise (NHE) in terms of dependence of sex, age and biological maturation. A total of 246 7- to 15-year-old skiers were tested with respect to their MEHS using an NHE-based measurement device (Vald Performance, Newstead, Australia). Significantly greater absolute MEHS was observed in skiers of the under 15 years (U15) category compared to skiers under 10 years old (U10) (227.9 ± 61.1 N vs. 142.6 ± 28.9 N; <i>p</i> < 0.001), also when grouped by sex. Absolute MEHS was revealed to be lower in U15 females compared to males (213.5 ± 49.0 N vs. 241.9 ± 68.4 N; <i>p</i> = 0.001); in U10 skiers there was no sex difference. For all age groups and sexes, absolute MEHS values were significantly correlated with age and biological maturation (<i>p</i> < 0.001). However, when normalized to body weight such associations disappeared, which is why this is strongly recommended when testing around their growth spurt. Overall, this study established sport-specific normative reference data that may be of interest to researchers and sport practitioners alike.
format	article
author	Kirsten Kiers Lynn Ellenberger Marie Javet Björn Bruhin Walter O. Frey Jörg Spörri
author_facet	Kirsten Kiers Lynn Ellenberger Marie Javet Björn Bruhin Walter O. Frey Jörg Spörri
author_sort	Kirsten Kiers
title	A Cross-Sectional Observation on Maximal Eccentric Hamstring Strength in 7- to 15-Year-Old Competitive Alpine Skiers
title_short	A Cross-Sectional Observation on Maximal Eccentric Hamstring Strength in 7- to 15-Year-Old Competitive Alpine Skiers
title_full	A Cross-Sectional Observation on Maximal Eccentric Hamstring Strength in 7- to 15-Year-Old Competitive Alpine Skiers
title_fullStr	A Cross-Sectional Observation on Maximal Eccentric Hamstring Strength in 7- to 15-Year-Old Competitive Alpine Skiers
title_full_unstemmed	A Cross-Sectional Observation on Maximal Eccentric Hamstring Strength in 7- to 15-Year-Old Competitive Alpine Skiers
title_sort	cross-sectional observation on maximal eccentric hamstring strength in 7- to 15-year-old competitive alpine skiers
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/04798aa3bce34612914e55552ca30767
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A Cross-Sectional Observation on Maximal Eccentric Hamstring Strength in 7- to 15-Year-Old Competitive Alpine Skiers

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