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1- Center for Physiotherapy Studies, Faculty of Health Sciences, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Puncak Alam, Selangor, Malaysia
2- Clinical and Rehabilitation Exercise Research Group, Faculty of Health Sciences, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Puncak Alam, Selangor, Malaysia
3- Center for Physiotherapy Studies, Faculty of Health Sciences, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Puncak Alam, Selangor, Malaysia , haidzir5894@uitm.edu.my
Abstract:   (223 Views)
Background. This study was performed to investigate the effects of short-duration high-intensity simulation of soccer fatigue on the dynamic balance and isokinetic strength of the lower limbs in youth soccer players. Methods. Thirty-nine youth soccer players completed high-intensity fatigue simulation in 5-min. The participants performed tests on dynamic balance and isokinetic strength before the fatigue simulation (PRE), immediately after simulation (POST5), and 20 min (POST20) and 35 min (POST35) after simulation. Dynamic balance was measured using the Y-Balance test for both legs in the anterior, posteromedial (PM), and posterolateral (PL) directions. The muscle strength of the lower limb was measured using the maximal isokinetic contraction of the dominant leg only. Results. Dynamic balance was significantly reduced after simulation in all directions for both legs (P<0.005). Significant reduction in the eccentric hamstring, concentric hamstring, and concentric quadriceps peak torques were also observed (P<0.05). However, no significant reductions were found in the functional hamstring/quadriceps ratio and conventional hamstring/quadriceps ratio (P>0.05). Conclusion. Fatigue influence dynamic balance, hamstrings and quadriceps strength which may have implications for higher risk of knee injury in youth players.
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APPLICABLE REMARKS
Fatigue simulation had detrimental effects on the dynamic balance, Hecc, Hcon, and Qcon in a soccer player. The soccer player is at risk of lower limb injury in a fatigued state, because fatigue alters the dynamic balance and reduces the muscle strength ability of youth soccer players. Given that fatigue had been proved as one of the causes that contribute to injury, many prevention strategies need to be applied. Therefore, physical therapy should be added to the criteria during the assessment of the return-to-play condition. This activity may reduce the risk of having another injury and may improve the performance of the player. Fatigue simulation for 5-min is practically used in the clinical setting according to the time consumption.

Type of Study: Original Article | Subject: Kinesiology and Sport Injuries
Received: 2021/06/26 | Accepted: 2021/01/12

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