The Y-Balance Test Lower Quarter and Lower Limb Injury Incidence in Iranian Elite Taekwondo Athletes

Poster Presentation
Paper ID : 1751-SSRC
Authors
1Department of Sport Sciences and Health, Shahid Beheshti University Faculty, Tehran, Iran
2Department of Sport Injuries and Corrective Exercises, Sport Sciences Research Institute, Tehran 1587958711, Iran; metti@ssrc.ac.ir; ORCID ID: 0000-0001-6019-8205
Abstract
Background: Musculoskeletal injuries in the lower limbs are common in taekwondo athletes. The first step in preventing these injuries is to predict their injury risk factors. Purpose: This prospective cohort study aimed to identify whether Y-Balance Test Lower Quarter scores (YBT-LQ) is associated with lower limb injury incidence in adult elite Taekwondo athletes. Methods: Seventy elite taekwondo athletes (n = 70, Males: n=39, age= 21.27 ± 2.98 years, height= 1.79 ± 0.06 m, mass= 67.00 ± 12.17 kg, BMI= 20.65 ± 2.84 kg.m-2) participated in this prospective cohort study. YBT-LQ were assessed before starting the national team camping. Lower extremity injuries during training or competition within 6 months were recorded. Spearman correlation assessed the association between the YBT-LQ and lower limb injury incidence, logistic regression was used to create a model for prediction. The statistical significance level was set at p<.05. Results: The composite YBT-LQ score was 94.82 ± 6.91cm on the left limb and 95.36 ± 7.71 cm on the right. Both the YBT-LQ composite left and right scores were associated with the lower limb injury incidence (r = .57; p < .05, and r = .45; p < .001 respectively). The overall model created via the logistic regression for the left and right limb was statistically significant when compared to the null model (X2(1) = 40.411, p˂0.001, and X2(1) = 40.411, p˂0.001 respectively for left and right limb), this model explained 45% and 31% of the variation of the lower limb injury incidence (meaning that lower limb incidence can be explained by this full model), suggesting that predictions are fairly reliable. Furthermore, 88.9% and 90% of the individuals were correctly classified using the model (provided respectively for the left and right limb composite scores) which is a large improvement. Conclusions: Results indicate that YBT-LQ composite left and right scores have a significant association with future lower limb injuries in adult elite Taekwondo athletes. The YBT-LQ composite score is a reliable and effective screening tool that can help practitioners to identify Taekwondo athletes at risk of sustaining lower limb injury before injuries occur.
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