Postural stability for taekwondo athletes with repetitive ankle sprains during a single-leg stance

Abstract

[Purpose] The purpose of this study is to investigate postural stability in such group of taekwondo athletes by measuring the center-of-pressure variables in both the injured limb and uninjured limb during a single-leg stance with eyes closed. [Subjects and Methods] The study includes eleven taekwondo athletes with repetitive ankle sprains (RASs) and eleven healthy taekwondo athletes (the controls) at the college level participating in taekwondo training sessions. For the controls, the “injured” limb was taken to be the left limb. [Results] The postural stability measured in both the anteroposterior and mediolateral directions using center-of-pressure variables was lower in the uninjured limb of the RAS group than in the control group during a single-leg stance with eyes closed. However, for the injured limb, there were no significant differences between the two groups. Furthermore, compared to the RAS group, the control group had higher stability in the injured limb than in the uninjured limb. [Conclusion] Individuals with RASs should ensure improvements in their proprioceptive and neuromuscular functions, as well as muscle strength, through an adequate period of rehabilitation to reduce the risk of re-injury.

Postural Control Deficits During Static Single-leg Stance in Chronic Ankle Instability: A Systematic Review and Meta-Analysis

“…A total of 26 studies evaluated mean sway velocity (or length) (Appendix 5.3, available online). 7,11,17,18,19,20,23,27,30,31,35,36,38,41,43,44,47, 57,58,60,61,62,64,66,71,75 Under conditions of open eyes, small to large differences were observed but the heterogeneity was high in the AP and total directions ( I 2 = 80.1% and 83.6%, respectively). Significant pooled results were proved to be unstable when 1 study was removed in the AP direction, 41,60,75 and 1 in the ML direction.…”

“…Six studies evaluated the mean sway amplitude, 30,38,42,59,60,62 no significant differences were found between groups in the AP or ML direction with either closed or open eyes. A total of 12 studies evaluated sway amplitude standard deviation (SD), 11,23,31,35,36,38,41,50,60,64,66,75 finding a higher CAI patient SD with small effect when eyes were open in both the AP (SMD = 0.36) and ML (SMD = 0.31) directions, a result that was stable according to sensitivity analysis. However, no significant differences were observed with closed eyes in either the AP or total directions and the significant difference in the ML direction was proved to be unstable when the studies of Knapp et al 35 or Méndez - Rebolledo et al 41 were removed.…”

Effect of Plyometric versus Ankle Stability Exercises on Lower Limb Biomechanics in Taekwondo Demonstration Athletes with Functional Ankle Instability

“…Taekwondo demonstrations are impressive performances of athleticism and artistry and consist of basic Taekwondo skills, such as traditional forms and patterns (called "Poomsae"), choreographed self-defense sequences, and board breaking. Taekwondo demonstrations always require high-intensity tasks, such as jump landing, kicking, breaking, and turning kicks [1,2], which require agility, speed, flexibility, strength, and endurance [1,3,4]. Injuries in Taekwondo demonstration athletes commonly involve the lower limbs [1] and usually occur during jump landing [5].…”

The effects of instrument-assisted soft tissue mobilization rehabilitation exercise on range of motion, isokinetic strength, and balance in chronic ankle instability taekwondo players

“…The foot movement from the taekwondo athletes requires support from the standing foot, footwork-skill from the kicking foot, and stability and balance to maintain posture ( Son et al, 2018 ). These movements are centered around the ankle and as a result, they can lead to restrictions in the joint’s range of motion (ROM), muscle weakness, and decrease in proprioception sensibility, eventually leading to ankle instability ( Sekir et al, 2007 ).…”