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. 2021 Jun 3;11(1):11749.
doi: 10.1038/s41598-021-91337-6.

Relationship between ankle strength and range of motion and postural stability during single-leg quiet stance in trained athletes

Nebojša Trajković  1 , Žiga Kozinc  2   3 , Darjan Smajla  2   4 , Nejc Šarabon  5   6   7   8
Affiliations

Relationship between ankle strength and range of motion and postural stability during single-leg quiet stance in trained athletes

Nebojša Trajković et al. Sci Rep. .

Abstract

The aim of this study was to determine the relationship between strength of ankle plantar and dorsal flexors and range of motion (RoM), and body sway variables during single-leg quiet stance, in highly trained athletes. The participants for this study were young athletes from 9 disciplines (n = 655). Center of pressure (CoP) velocity, amplitude, and frequency were measured during single-leg quiet stance. Moreover, athletes were measured for passive ankle plantar flexion (PF) and dorsal flexion (DF) RoM, and for rate of torque development (RTD) in the 0-50 (RTD50) and 0-200 ms time windows (RTD200). Ankle strength and RoM could not predict CoP velocity total, anterior-posterior (AP), and medial-lateral (ML) (p > 0.05). However, PFRTD50 and PFRoM and PFRoM positively influenced CoP amplitude in ML direction (p < 0.001, R2 = 0.10). Moreover, CoP frequency in ML direction significantly increased with lower PFRTD50, DFRTD50, DFRTD200, PFRoM, and DFRoM (p < 0.05). We have demonstrated that ankle strength and RoM were related to single-leg quiet stance postural balance in trained athletes. The ankle RoM showed the greatest influence on CoP variables in ML directions.

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Conflict of interest statement

The authors declare no competing interests.

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