Altered landing mechanics are shown by male youth soccer players at different stages of maturation |
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| Affiliation: | 1. Athlete Health and Performance Research Centre, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar;2. Youth Physical Development Unit, School of Sport, Cardiff Metropolitan University, Cardiff, UK;3. Sport Performance Research Institute, New Zealand (SPRINZ), AUT University, Auckland, New Zealand;4. School of Sport and Exercise, University of Gloucestershire, Gloucester, UK;5. The SPORT Center, Division of Sports Medicine, Cincinnati Children''s Hospital Medical Center, Cincinnati, OH, USA;6. Department of Pediatrics, University of Cincinnati, Cincinnati, OH, USA;7. Department of Orthopaedic Surgery, University of Cincinnati, Cincinnati, OH, USA;8. The Micheli Center for Sports Injury Prevention, Waltham, MA, USA;9. School of Sports Health and Applied Sciences, St Marys University, London, UK;10. School of Sport and Health Sciences and Youth Physical Development Centre, Wales, UK;1. Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, University of South Australia, Australia;2. Sport and Exercise Science, School of Science and Health, Western Sydney University, Australia;1. School of Sport and Exercise, Massey University, New Zealand;2. Kinesiology Department, Seattle University, Seattle, WA, USA;3. Kevin P. Granata Biomechanics Lab, Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA;4. Sports Performance Research Institute New Zealand (SPRINZ), School of Sport and Recreation, Auckland University of Technology, Auckland, New Zealand;5. Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand;6. Faculty of Health, Sport and Human Performance, University of Waikato, Adams Centre for High Performance, Tauranga, New Zealand;7. School of Health Sciences, University of Canterbury, Christchurch, New Zealand;1. Department of Physical Education and Sports Science, University of Limerick, Ireland;2. Department of Sports, Limerick Institute of Technology, Tipperary, Ireland;1. Department of Sport & Exercise Sciences, Teesside University, UK;2. Pro-Football Support, Huddersfield, UK;3. Health & Social Care Institute, Teesside University, UK;4. Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul – UFFS, Brazil |
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| Abstract: | ObjectivesExamine the effects of maturation on single leg jumping performance in elite male youth soccer players.DesignCross sectional.SettingAcademy soccer clubs.Participants347 male youth players classified as either pre, circa or post-peak height velocity (PHV).Main outcome measuresSingle leg countermovement jump (SLCMJ) height, peak vertical landing forces (pVGRF), knee valgus and trunk side flexion.ResultsVertical jump height and absolute pVGRF increased with each stage of maturation (p < 0.001; d = 0.85–2.35). Relative to body weight, significantly higher landing forces were recorded on the left leg in circa versus post-PHV players (p < 0.05; d = −0.40). Knee valgus reduced with maturation but the only notable between-group differences were shown in post-PHV players (p < 0.05; d = 0.67); however, greater ipsilateral lateral trunk flexion angles was also present and these differences were significantly increased relative to circa-PHV players (p < 0.05; d = 0.85).ConclusionPeriods of rapid growth are associated with landing kinetics which may heighten injury risk. While reductions in knee valgus were displayed with maturation; a compensatory strategy of greater trunk lateral flexion was evident in post-PHV players and this may increase the risk of injury. |
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