Analysis of bilateral asymmetry in street runners
DOI:
https://doi.org/10.33233/rbfe.v18i4.3281Keywords:
functional physical performance; injuries; runningAbstract
Asymmetries between limbs (bilateral) are common in athletes, being pointed as a result of sports practice. However, imbalances that exceed physiological thresholds (10-15%) are associated with risk of injury. The present study aimed to analyze bilateral asymmetries in a group of recreational runners. Nineteen runners of both sexes were recruited through social media, 10 men (30.61 ± 8.25 years) and 9 women (32.64 ± 6.05 years), healthy and running at least ten kilometers per week for more than six months without interruption. All volunteers performed a unilateral vertical countermovement jump (CMJ) test. Based on the test performance, the bilateral asymmetry index was calculated using a standard percentage difference equation, which considers the performance of strong leg and weak leg. It was possible to identify significant differences in the inter limb performance of the vertical counter-movement jump (p <0.001; ES = 1.2). In addition, 57.8% of the sample (11 runners) presented an asymmetry index greater than 10%. It is concluded that the specific aspects of street race may favor the development of bilateral asymmetric adaptations in runners, implying a higher risk of injury.
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Copyright (c) 2020 Victor Sabino de Queiros, Rômulo Vasconcelos Teixeira, Magno Vinicius Trigueiro e Silva, Matheus Dantas, Luiz Felipe da Silva, Paulo Francisco Almeida Neto, Rui Barboza Neto, Gustavo Henrique Carvalho dos Santos, Breno Guilherme de Araújo Tinôco Cabral
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