Effects of knee and ankle muscle fatigue on postural control in the unipedal stance

Abstract

The aim of this study was to compare the effects of acute muscle fatigue of the ankle and knee musculature on postural control by immediate measures after performing fatiguing tasks (POST condition). One group of subjects (n = 8) performed a fatiguing task by voluntary contractions of the triceps surae (group TRI) and the other (n = 9) performed a fatiguing task by voluntary contractions of the quadriceps femoris (group QUA). Each muscle group was exercised until the loss of maximal voluntary contraction torque reached 50% (isokinetic dynamometer). Posture was assessed by measuring the centre of foot pressure (COP) with a force platform during a test of unipedal quiet standing posture with eyes closed. Initially (in PRE condition), the mean COP velocity was not significantly different between group TRI and group QUA. In POST condition, the mean COP velocity increased more in group QUA than in group TRI. The postural control was more impaired by knee muscle fatigue than by ankle muscle fatigue.

Effects of Localized Muscle Fatigue and Whole Body Fatigue on Postural Control during Single-Leg Stance

“…Under normal circumstances, the ankle strategy is effective in maintaining static standing and responding to a small sway, but, when the muscle around the ankle experiences fatigue, posture is regulated by relying on the muscle around the hip joint; this is called the hip strategy. On the other hand, if the muscle around the hip joint experiences fatigue, the opposite situation occurs, which is called the ankle strategy (Bizid et al, 2009;Gribble & Hertel, 2004a). Therefore, single-leg stance is controlled by a combination of the ankle and hip strategies (Bisson, McEwen, Lajoie, & Bilodeau, 2011;Riemann, Myers, & Lephart, 2003).…”

Effects of a 6-week neuromuscular ankle training program on the Star Excursion Balance Test for basketball players

“…By the results obtained in our study, we can say that one attempt was enough to get a reliable record, as conducting more repetitions could lead to the onset of fatigue, especially when this occurs in the hip muscles. 33,37 On checking temporal stability, it can be shown that all attempts are very reliable in each of the directions (A: Kendall's W = 0.941; AL: Kendall's W = 0.685; L: Kendall's W = 0.825; PL: Kendall's W = 0.806; P: Kendall's W = 0.907). These results agree with those obtained by Hertel et al 26 and Demura and Yamada, 24 but contradict the findings reported by Munro and Herrington, 27 who considered that measurements were not stabilized until the 4th attempt, and recommend 18 sessions of 6 attempts each to achieve a reliable result.…”

Effects of Foot Type and Ankle Joint Fatigue Levels on the Trajectories of COP and COM during a Single-Leg Stance

“…그 결과, 운동 협응과 자세제어에 영향을 미쳐 상해 발생률을 높이는 것으로 보 고되었다 (Chabran, Maton, & Fourment, 2002;Price, Hawkins, Hulse, & Hodson, 2004). 근육의 피로에 관한 연구는 대부분 기능적 움직임을 이 용한 피로 유발에 관한 연구 (Adlerton, Moritz, & MoeNilssen, 2003;Bizid et al, 2009;Hosseinimehr, Daneshmandi, & Norasteh, 2010;Kasahara, Ebata, & Takahashi, 2007;Springer & Pincivero, 2009)와 등속성 동력계 (isokinetic dynamometer)를 이용한 피로 유발에 관한 연구 (Boyas et al, 2011;Gutierrez et al, 2007;Gribble & Hertel, 2004a, 2004bHarkins, Mattacola, Uhl, Malone, & McCrory, 2005;Headlee, Leonard, Hart, Ingersoll, & Hertel, 2008;Ochsendorf, Mattacola, & Arnold, 2000) 로 이루어져 왔다. 기능적 움직임을 이용한 피로 유발은 조깅, 전력질주, 팔굽혀펴기, 윗몸일으키기, 뒤꿈치 들기, 점프 등을 사용하며, 스포츠와 직접적으로 관련된 기능적 인 움직임을 적용하였다는 부분에서 장점이 있으나, 피로 의 정도를 통제하기 어려운 단점이 있다 (Hosseinimehr et al, 2010).…”