engleski

Assessing young gymnasts’ dynamic posture: a comparison of methods

Introduction: Functional Movement Screen is an established method of assessing dynamic posture of athletes. In theory, it should be able to provide some insight in individual athlete’s injury potential. Validity and reliability of FMS as screening tool is debated and one of foremost criticism is its subjectivity. To the authors’ knowledge, there is no previous research using Kinovea to precisely asses FMS scores. Methods: 10 young competitive gymnasts (4 female and 6 male) were included in this study. Mean age of sample is 11.52, mean height 138.3 cm, mean weight 33.69 kg and mean BMI score of 17.6. The participants were measured using FMS test. FMS measures asses dynamic posture and mobility and is used as a screening tool to help prevent potential injures by identifying athletes with higher likelihood of sustaining a sports injury. Kinovea is a video-analysis software used to measure various kinematic properties of locomotion such as joint angles, velocity and acceleration of movement of body segments. The participants were scored by an experienced FMS assessor on site as per standard FMS protocol by Cook et al. (2010). Afterwards, same participants were scored again using Kinovea to achieve more objective measurement. The kinematic protocol was described by Whiteside et al. (2016) and modified by Kiseljak et al. (2018). Results: Wilcoxon Signed Rank Test for FMS scores versus FMS-Kinovea scores identified FMS test no. 1 (Deep Squat) as significantly different. Median score of Deep Squat assessed on site was 2 (mean value: 2.1), while that same test, scored with Kinovea, had median score of 1 (mean value: 1.2). Paired Pitman-Morgan test for equality of variances was used to test the dispersion of scores. None were shown to be statistically significant, however overall FMS score was near significance threshold implying that there is a difference although our power of study was too low probably due to low sample size. Discussion: We detected significant difference in scores of Deep Squat test which is not surprising since it is the most complicated test to asses due to large number of variables assessor must evaluate. Also, variance of overall FMS score using Kinovea assisted protocol was smaller (although not significantly so), suggesting more objective assessment.

Dynamic posture, FMS, Kinovea, gymnastics

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