Association Between Anthropometric Assessments, Muscle Strength, Lower Limb Range Of Motion With Postural Stability Among Professional Malaysian Footballers
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Abstract
Introduction: Anthropometric assessments, muscle strength, range of motion, and postural stability are integral part of pre-competition medical assessments (PCMA). However, there is limited understanding of the association of this assessment with regard to postural stability. Postural stability performance is crucial, not only for injury prevention, but also athlete’s performance. Thus, the aim is to examine the association of anthropometric, lower limb strength, and lower limb range of motion with single leg stability test. Methods: A prospective cross-sectional study examining 83 Malaysian footballers who came for PCMA at Sports Medicine clinic, University Malaya Medical Centre, underwent extensive musculoskeletal examinations, including anthropometric assessments using body impedance analysis, isometric muscle strength testing using handheld dynamometer, lower limb range of motion assessments using goniometer, and single leg stability test using Biodex. Results: Dominant leg demonstrated a higher mean knee flexor (216 ± 43.6 newton), ankle extensor (179.6 ± 54.4 newton) and lower limb strength index (1219.1 ± 241.9 newton), and has lower overall stability index (1.36 ± 0.45) compared to non-dominant leg (1.26 ± 0.37). Body mass index (BMI) and skeletal muscle mass showed a significant correlation with overall stability index, both in dominant and non-dominant legs. There is no significant correlation seen between muscle strength, and lower limb joint range motion with postural stability. Conclusion: This study demonstrated that anthropometric, lower limb strength, range of motion of lower limb and lower limb postural stability are independent of each other.
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