Effect of exercise therapy combining electrical therapy and balance training on functional instability resulting from ankle sprain—focus on stability of jump landing

Abstract

[Purpose] Functional instability leads to a delay in the muscle reaction time and weakness of the peroneal muscles. The present study examined the effects of transcutaneous electrical nerve stimulation during balance exercise on patients with functional instability of the ankles, including the ability to land after jumping at the center of foot pressure. [Subjects] The subjects were seven males with a history of ankle sprain. All had a sprained ankle score of ≤80 points on Karlson’s functional instability test. [Methods] They were asked to jump over a 20-cm-high platform sideways for 10 consecutive seconds on a force plate with one leg. The length of the center of pressure was measured for comparison of balance exercise and balance exercise with simultaneous transcutaneous electrical nerve stimulation. [Results] The length of the center of foot pressure on the sprain side was significantly greater than on the non-sprain side under both conditions. Under the balance exercise with simultaneous transcutaneous electrical nerve stimulation therapy condition, the length of the center of foot pressure on the sprain side was significantly reduced, with the values being 627.0 ± 235.4 and 551.8 ± 171.1 mm before and after the challenge, respectively. [Conclusion] Ankle instability on the sprain side was significantly reduced under the balance exercise with simultaneous transcutaneous electrical nerve stimulation therapy condition before and after the challenge. Peroneal muscles showed increased activity caused by common peroneal innervation.

Relationship between chronic ankle sprain instability and ultrasonographic evaluation of the peroneus during a single-leg standing task

“…It is reported that the length of center of pressure (COP) is extended in participants with CAI during one-leg standing 21) . In our past study 22) , the length of COP was extended in the one-leg standing and side-jump-landing, and we interpreted this to mean that supportability on the sprain side is reduced. The results of the current study show that the sprain side highly sways in the sagittal and vertical directions in one-leg standing.…”

The influence of a medio-lateral unstable sole on invertor and evertor activation while descending stairs

“…Studies have proposed methods to prevent lateral ankle sprain 8 , 9 ) . Exercise sandals (Orthopedic Physical Therapy Products, Minneapolis, MN, USA) with hemispherical soles increase TA and PL muscle activation during one-leg standing 10 ) , and decrease movement of the anteroposterior and mediolateral pressure centers in patients with functional ankle instability through functional balance training (including walking, lunging, and squatting) 11 ) .…”

Avaliação dos movimentos do tornozelo e da resposta eletromiográfia dos músculos tibial anterior e fibulares em plataforma de inversão súbita

“…A entorse de tornozelo é a lesão mais comum entre os esportes 33,34 e contribui com 19-23% de todas as lesões esportivas. Quarenta por cento das entorses, principalmente por tratamentos inadequados, podem ser recidivantes.…”

“…Em um dia ocorrem 23 mil entorses nos Estados Unidos e cinco mil no Reino Unido 6 . Entorse de tornozelo ocorre durante a aterrisagem de um salto ou nas mudanças de direção do movimento durante a corrida [7][8][9] .…”

“…10,23,28,34,59,60,66 . Na plataforma atual, a maior velocidade foi vista na flexão plantar, 280º, próxima da usada por Ohta et al66 , que foi 300º na inversão.…”