Effect of unilateral knee extensor fatigue on force and balance of the contralateral limb

Arora, Shruti; Budden, Shawn; Byrne, Jeannette M.; Behm, David G.

doi:10.1007/s00421-015-3198-5

Cited by 23 publications

(31 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 30-s unilateral exercise was not enough to produce a reduction in the contralateral resting limb MVC. This both contrasts [ 5 , 13 , 14 , 24 – 26 , 45 – 49 ] and agrees [ 22 , 55 – 57 ] with the literature. Whether a cross-over effect of muscle fatigue, shown as a decline in MVC of the NEL, arises or not is multifaceted.…”

Section: Discussionsupporting

confidence: 87%

Is the cross-over effect of a unilateral high-intensity leg extension influenced by the sex of the participants?

et al. 2018

View full text Add to dashboard Cite

BackgroundWhile performing a unilateral muscle contraction, electrical muscle activity also arises in the contralateral homologous muscle, muscle group, or limb. When the muscle contraction induces muscle fatigue, females show not only a greater resistance than males but also a reduced contralateral muscle activation. The study aimed at investigating whether, during a high-intensity 30-s unilateral maximal effort isometric leg extension exercise, the contralateral non-exercising limb (NEL) knee extensor muscle activation would differ between females and males.MethodsTwenty participants, 11 females (23.80 ± 2.15 years old) and 9 males (26.50 ± 2.45 years old), performed a unilateral 30-s exercise while surface electromyography (sEMG) was measured from the vastus lateralis (VL), vastus medialis (VM), and rectus femoris (RF) on both limbs. The maximal voluntary contraction (MVC) was measured for both the exercising limb (EL) and the NEL before (MVC PRE) and after (MVC POST) the 30-s exercise to assess muscle fatigue.ResultsWhile both females and males exhibited muscle fatigue in the EL (p = 0.015), females exhibited a lower MVC reduction than males (p = 0.042), suggesting that females were less fatigued than males. Although no muscle fatigue, i.e., no MVC force reduction was found in the NEL for either group before and after the 30-s exercise, the muscle activity of the VL was found to be of greater magnitude during the MVC POST only for females (p = 0.047) while it remained unchanged for males. During the 30-s exercise, the force output of the EL decreased only for males (p = 0.029) while females showed a preservation of the force output (p > 0.05). The sEMG activity of the NEL during the 30-s unilateral exercise increased for both groups in all measured muscles (all p-values < 0.03).ConclusionsLikely, different underlying muscle fatigue mechanisms occurred in the EL between females and males. Yet, our findings suggest that the cross-over effect to the NEL during the 30-s exercise occurred in a similar fashion in both groups. The current study suggests that the contralateral muscle activation seen with a unilateral exercise is independent of the sex of individuals. Therefore, unilateral training or rehabilitation-based protocols would similarly impact females and males.

show abstract

Section: Discussionsupporting

confidence: 87%

Is the cross-over effect of a unilateral high-intensity leg extension influenced by the sex of the participants?

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Please consider donating at www.storkinesiology.org/annual 15 drive. Further questioning the impact of centrally mediated neural mechanisms, studies that have examined electromyographic activity (EMG) of the non-exercised muscle are conflicting in whether there appears to be evidence of neural inhibition [8,10,15,[79][80][81]. While there is evidence suggestive of reduced cerebral oxygenation possibly impacting NLMF [82,83], evidence from studies of transcranial magnetic stimulation (TMS) regarding specific levels neural influence (i.e.…”

Section: Discussionmentioning

confidence: 99%

Non-local muscle fatigue effects on muscle strength, power, and endurance in healthy individuals: A systematic review and meta-analysis

Behm

Alizadeh

Anvar

et al. 2020

Preprint

View full text Add to dashboard Cite

Objective: To examine whether non-local muscle fatigue occurs following performance of a fatiguing bout of exercise of a different muscle(s).Design: Systematic review and meta-analysis.Search and Inclusion: A systematic literature search using a Boolean search strategy was conducted with PubMed, SPORTDiscus, Web of Science, and Google Scholar in April 2020 and was supplemented with additional ‘snowballing’ searches up to September 2020. To be included in our analysis, studies had to include at least one intentional performance measure (i.e., strength, endurance, or power), which if reduced could be considered evidence of muscle fatigue, and also had to include the implementation of a fatiguing protocol to a location (i.e., limb or limbs) that differed to those for which performance was measured. We excluded studies that measured only mechanistic variables such as electromyographic, or spinal/supraspinal excitability. After search and screening, 52 studies were eligible for inclusion including 57 groups of participants (median sample = 11) and a total of 303 participants.Results: The main multilevel meta-analysis model including all effects sizes (278 across 50 clusters [median = 4, range = 1 to 18 effects per cluster) revealed a trivial point estimate with high precision for the interval estimate (-0.02 [95%CIs = -0.14 to 0.09]), yet with substantial heterogeneity (Q(277) = 642.3, p < 0.01), I2 = 67.4%). Subgroup and meta-regression analyses showed that NLMF effects were not moderated by study design (between vs. within-participant), homologous vs. heterologous effects, upper or lower body effects, participant training status, sex, age, the time of post-fatigue protocol measurement, or the severity of the fatigue protocol. However, there did appear to be an effect of type of outcome measure where both strength (0.11 [95%CIs = 0.01 to 0.21]) and power outcomes had trivial effects (-0.01 [95%CIs = -0.24 to 0.22]), whereas endurance outcomes showed moderate albeit imprecise effects (-0.54 [95%CIs = -0.95 to -0.14]).Conclusions: Overall, the findings do not support the existence of a general NLMF effect; however, when examining specific types of performance outcomes there may be an effect specifically upon endurance-based outcomes (i.e., time to task failure). However, there are relatively fewer studies that have examined endurance effects or mechanisms explaining this possible effect, in addition to fewer studies including women or younger and older participants, and considering causal effects of prior training history through the use of longitudinal intervention study designs. Thus, it seems pertinent that future research on NLMF effects should be redirected towards these still relatively unexplored areas.

show abstract

“…This means that the crosseffect was accentuated as the difficulty of the postural task was increased (dynamic vs. static). Besides, the fatiguing exercise had to be relatively long because a short fatigue exercise (i.e., 15 contractions of 4s-16s, each contraction at 30% MVC, i.e., each session = 5 min) did not induce alteration of motor output (muscle strength and EMG activity) and postural control of the contralateral limb (Arora et al, 2015). Based on the results mentioned above, the duration (and probably also the intensity, i.e., intensity-duration interaction) of a fatiguing exercise of the ipsilateral limb is likely to impact monopedal postural control of the contralateral limb.…”

Section: Cross-education and Postural Control: Influence Of Fatigue Amentioning

confidence: 99%

Cross-Education Related to the Ipsilateral Limb Activity on Monopedal Postural Control of the Contralateral Limb: A Review

Paillard

2020

Front. Physiol.

View full text Add to dashboard Cite

Cross-education is the effect whereby the ipsilateral limb training generates contralateral effects as part of motor tasks requiring strength and skills. However, it is not yet known if cross-education applies to postural control which could be essential as part of human motricity. Hence, this review addresses the possible effects of acute and chronic unilateral exercises (i.e., fatiguing exercises and regularly repeated /training exercises, respectively) on the contralateral monopedal postural control. Evidence suggests that fatiguing exercises disturb the contralateral monopedal postural control. This disturbance emanates from spinal and supra-spinal alterations which provokes changes to the motor function of the contralateral limb and degrades its postural control. Unilateral training produces cross-education related to postural control, especially when it includes balance exercises, but this remains to be tested when it includes resistance exercises. Mechanistic explanations are proposed to explain how neurophysiological changes operate in the disturbance or improvement of the contralateral monopedal postural control after unilateral fatiguing exercises or training exercises (respectively) of the lower-limb.

show abstract

Effect of unilateral knee extensor fatigue on force and balance of the contralateral limb

Cited by 23 publications

References 52 publications

Is the cross-over effect of a unilateral high-intensity leg extension influenced by the sex of the participants?

Is the cross-over effect of a unilateral high-intensity leg extension influenced by the sex of the participants?

Non-local muscle fatigue effects on muscle strength, power, and endurance in healthy individuals: A systematic review and meta-analysis

Cross-Education Related to the Ipsilateral Limb Activity on Monopedal Postural Control of the Contralateral Limb: A Review

Contact Info

Product

Resources

About