Stimulated and voluntary fatiguing contractions of quadriceps femoris differently disturb postural control

Paillard, Thierry; Maître, Julien; Chaubet, Vincent; Borel, Liliane

doi:10.1016/j.neulet.2010.04.034

Cited by 34 publications

(25 citation statements)

References 27 publications

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“…In our study, hierarchical variable clustering (Figure 1) revealed that the correlation between the ML and AP variables was modest (Spearman's 2 ϭ Ͻ0.20); therefore, although derived from the same test, standing COP ML and AP variables were separable and thus potentially capable of influencing physical function independently. Furthermore, this finding reinforces the notion that the central nervous system (CNS) uses different strategies to control balance in the AP and ML planes (23) and given also that the knee extensors are primarily sagittal plane movers, it seems permissible to suggest that the knee extensors may be more involved in postural control in the AP plane than in the ML plane (23,24).…”

supporting

confidence: 74%

Associations of knee extensor strength and standing balance with physical function in knee osteoarthritis

Pua

Liang

Ong

et al. 2011

Arthritis Care & Research

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Objective. Knee extensor strength is an important correlate of physical function in patients with knee osteoarthritis; however, it remains unclear whether standing balance is also a correlate. The purpose of this study was to evaluate the cross-sectional associations of knee extensor strength, standing balance, and their interaction with physical function. Methods. One hundred four older adults with end-stage knee osteoarthritis awaiting a total knee replacement (mean ؎ SD age 67 ؎ 8 years) participated. Isometric knee extensor strength was measured using an isokinetic dynamometer. Standing balance performance was measured by the center of pressure displacement during quiet standing on a balance board. Physical function was measured by the self-report Short Form 36 (SF-36) questionnaire and by the 10-meter fast-pace gait speed test. Results. After adjustment for demographic and knee pain variables, we detected significant knee strength by standing balance interaction terms for both SF-36 physical function and fast-pace gait speed. Interrogation of the interaction revealed that standing balance in the anteroposterior plane was positively related to physical function among patients with lower knee extensor strength. Conversely, among patients with higher knee extensor strength, the standing balancephysical function associations were, or tended to be, negative. Conclusion. These findings suggest that although standing balance was related to physical function in patients with knee osteoarthritis, this relationship was complex and dependent on knee extensor strength level. These results are of importance in developing intervention strategies and refining theoretical models, but they call for further study.

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supporting

confidence: 74%

Associations of knee extensor strength and standing balance with physical function in knee osteoarthritis

Pua

Liang

Ong

et al. 2011

Arthritis Care & Research

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“…Decreased muscle strength restricts postural control, causing postural imbalance evidenced increased postural sway. Previous studies have shown a nearly 27% increase in PSV among those with MF and 6% lower MVC 9) , and increased postural sway in older people with 52% lower MVC than young people 8) . In this study, the correlation coefficient between PSL and MMT was r= -0.322 (p<0.01), and PSV and MMT showed a negative correlation with r= -0.324 (p<0.01).…”

Section: Gribbles Et Al Reported Mf In the Lower Limbs Increasedmentioning

confidence: 78%

“…Furthermore, adequate recruitment of muscle strength, a prerequisite for postural control, is required to maintain a desirable action or activity 7) . MF causes changes in movement and postural control by altering the efficiency of muscle strength and proprioception information, and MF occurs in the aged who experience frequent falls as well as patients with various diseases 8,9) . Even though MF is commonly caused by exercise or labor in daily life, research on declines in motor functions such as muscle strength and postural sway is still insufficient.…”

Section: Introductionmentioning

confidence: 99%

Effects of Transcutaneous Electrical Nerve Stimulation (TENS) on Changes in Postural Balance and Muscle Contraction following Muscle Fatigue

Cho

Lee

et al. 2011

J Phys Ther Sci

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Abstract.[Purpose] The purpose of this study was to investigate the effects of transcutaneous electrical stimulation (TENS) applied to fatigued muscles on postural imbalance and decline in muscle strength following fatigue of the gastrocnemius.[Subjects] Eighteen subjects with muscle fatigue were allocated to either a sensory threshold group or a 2~3 times sensory threshold group and the study followed a randomized single-blind cross-over design.[Methods] Muscle fatigue of the gastrocnemius was induced by repeated exercise. After inducing fatigue, TENS was applied to the fatigued muscle. The postural sway length (PSL), postural sway velocity (PSV) and maximal voluntary contraction (MVC) were measured before and after the induction of fatigue, and during the application of TENS to the fatigued muscles.[Results] Muscle fatigue increased postural imbalance as expressed by length and velocity of body sway and decreased muscle strength, while TENS improved the postural imbalance and partially reversed the muscle strength decline induced by muscle fatigue.[Conclusion] Muscle fatigue is an important factor in postural balance control and muscle voluntary contraction, and TENS can be effective at relieving muscle fatigue.

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“…However, this relationship between the magnitude of strength loss and the postural control disturbance only remains when muscle fatigue is generated by voluntary muscle contractions but not by electro-induced (or stimulated) muscle contractions. Indeed, Paillard et al (2010b) showed that for a given intensity and duration of stimulation, the strength loss of quadriceps femoris induced by fatiguing stimulated contractions was greater than that induced by fatiguing voluntary contractions, while postural control is more disturbed by voluntary contractions. According to these authors, voluntary contractions disturb postural control more than stimulated contractions because they would affect descending drive and tonic muscle fibers more.…”

Section: Introductionmentioning

confidence: 99%

Stimulated and voluntary fatiguing contractions of quadriceps femoris similarly disturb postural control in the bipedal stance

Chaubet¹,

Maître²,

Cormery³

et al. 2011

Eur J Appl Physiol

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The aim of this work was to compare the effects of fatigue of the quadriceps femoris after fatiguing voluntary contractions (VOL) and fatiguing neuromuscular electrical stimulation (ES) on bipedal postural control. Nineteen active male subjects (22.2 ± 1.7 years) completed these two fatiguing exercises. Isometric maximal voluntary contraction (MVC) and postural control were recorded using an ergometer and a force platform that registered the center of foot pressure (COP). We analyzed the COP surface, the mean COP velocity and the spectral power density given by the wavelet transform. Recordings were performed before (PRE condition) and after the completion of each fatiguing task (immediately POST condition, after a 5 min recovery POST 5 condition). In POST condition, the ES exercise affected MVC more than the VOL exercise. However, bipedal postural control was similarly deteriorated for both exercises. In POST 5 condition, for both fatiguing exercises, muscle strength and postural control did not recover their initial level. These results suggest that the postural control disturbance could not be distinguished for the two fatiguing exercises in the bipedal stance. In addition, the recovery speeds of postural control and muscle strength abilities did not differ for the ES exercise and the VOL exercise.

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Stimulated and voluntary fatiguing contractions of quadriceps femoris differently disturb postural control

Cited by 34 publications

References 27 publications

Associations of knee extensor strength and standing balance with physical function in knee osteoarthritis

Associations of knee extensor strength and standing balance with physical function in knee osteoarthritis

Effects of Transcutaneous Electrical Nerve Stimulation (TENS) on Changes in Postural Balance and Muscle Contraction following Muscle Fatigue

Stimulated and voluntary fatiguing contractions of quadriceps femoris similarly disturb postural control in the bipedal stance

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