The clinical assessment of hip muscle strength in professional rugby union players |
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| Affiliation: | 1. The Performance Team MCFC Academy, Manchester City FC, CFA Etihad Campus, 400 Ashton New Road, Manchester, England, United Kingdom;2. Medical Department, Leinster Rugby, Newstead Building A, University College Dublin, Belfield, Dublin 4, Ireland;3. School of Public Health, Physiotherapy & Sport Science, University College Dublin, Dublin 4, Ireland;1. Sports Physical Therapy Department, Gundersen Health System, Onalaska, WI, USA;2. La Crosse Institute for Movement Science, University of Wisconsin-La Crosse, La Crosse, WI, USA;3. Health Professions Department, University of Wisconsin-La Crosse, La Crosse, WI, USA;1. Universidade do Estado do Rio de Janeiro (UERJ), Programa de Pós-Graduação em Ciências do Exercício e do Esporte (PPGCEE), Rua São Francisco Xavier, n° 524, 9° floor; Block F; Room 9122, Rio de Janeiro, RJ, Brazil;2. Centro de Educação Física Almirante Adalberto Nunes (CEFAN), Laboratório de Pesquisa em Ciências do Exercício (LABOCE), Avenida Brasil, 10.590, Penha, Rio de Janeiro, RJ, CEP: 21.012-350, Brazil;3. Programa de Pós-Graduação em Desempenho Humano Operacional (PPGDHO), Universidade da Força Aérea (UNIFA), Av. Marechal Fontenelle, 1200, Campo dos Afonsos, Rio de Janeiro, RJ, Brazil;1. La Crosse Institute for Movement Science, Physical Therapy Program, Department of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, 54601, USA;2. Gundersen Health System, La Crosse, WI, 54601, USA;1. School of Sport, Health and Outdoor Education, Faculty of Business & Management, University of Wales Trinity Saint David, United Kingdom;2. Gwent Dragons Rugby, United Kingdom;3. School of Sport and Exercise, Faculty of Applied Sciences, University of Gloucestershire, United Kingdom;4. School of Health, Sport and Professional Practice, Faculty of Life Sciences and Education, University of South Wales, United Kingdom;1. School of Physiotherapy and Exercise Science, Curtin University, Australia;2. West Coast Eagles Football Club, Australia;1. Faculty of Medicine and Health Sciences – Stellenbosch University, Physiotherapy Division, PO Box 241, Cape Town, 8000, South Africa;2. Faculty of Health Sciences, University of the Witwatersrand, Physiotherapy Department, 7 York Road, Parktown, 2193, Johannesburg, Gauteng, South Africa |
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| Abstract: | Groin/hip injuries are prevalent in rugby union (RU). Assessment of hip muscle strength is important when designing bespoke injury prevention and rehabilitation programmes.ObjectiveThe primary aim of this study was to determine normative values of hip muscle strength in elite-level RU players. A secondary aim of this study was to compare the Copenhagen Hip and Groin Outcome Score (HAGOS) between players with and without a history of groin/hip injury.DesignCross-sectional cohort study.SettingProfessional RU club.Participants58 male professional RU players competing in the PRO14 league elite club level competition.Main outcome measuresHandheld dynamometry eccentric strength values of hip abduction (ABD), adduction (ADD), internal rotation (IR) and external rotation (ER), HAGOS.ResultsPlayers' dominant (DOM) and non-dominant (NDOM) hip strength values were, 2.38 and 2.34 N m/kg for ABD, 2.79 and 2.71 N m/kg for ADD, 2.69 and 2.55 N m/kg for IR, and 2.65 and 2.54 N m/kg for ER. ADD:ABD strength ratio was 1.17 ± 0.26 for the DOM limb and 1.16 ± 0.24 for the NDOM limb. There was no clinically significant difference in strength between players’ DOM and NDOM limbs. Players with a history of groin/hip injury scored lower on four of the HAGOS subscales (pain; symptoms; sport; quality of life) compared to those without a history of groin/hip injury.ConclusionsThis study may help establish normative hip strength and HAGOS values for elite-level RU players. The results presented have important implications for the assessment of hip muscle strength and could provide clinical markers for return-to-play following injury. |
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| Keywords: | Hip adduction strength Limb dominance Hip adduction/abduction ratio Groin pain Rugby players Handheld dynamometer |
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