Peroneus longus and tibialis anterior muscle activity in the stance phase: A quantified electromyographic study of 10 controls and 25 patients with chronic ankle instability

Louwerens, Jan Willem K.; Linge, B. Van; Klerk, Luuk W. L. de; Mulder, Paul; Snijders, Chris J.

doi:10.3109/17453679509002306

Cited by 79 publications

(70 citation statements)

References 21 publications

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“…The Achilles tendon in particular must withstand large muscle contractions during ankle plantarflexion at propulsion, as well as during deceleration of body movement in the stance phase of gait [20]. Eversion and inversion motions of the foot, which involve the peroneal and tibialis posterior muscles, are also important throughout the gait cycle, particularly for their contribution to shock absorption and stability [21]. Although the impact that MSU deposition in these ankle structures has on muscle strength remains unclear, several case studies investigating tendon ruptures of the ankle and foot in the gout populations have suggested that the presence of tophi reduces the tensile capacity of tendons [22][23][24].…”

Section: Discussionmentioning

confidence: 99%

Foot and ankle muscle strength in people with gout: A two-arm cross-sectional study

Stewart

Mawston

Davidtz

et al. 2016

Clinical Biomechanics

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Foot and ankle muscle strength in people with gout: a two-arm cross-sectional study, Clinical Biomechanics (2015Biomechanics ( ), doi: 10.1016Biomechanics ( /j.clinbiomech.2015 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT ABSTRACTBackground Foot and ankle structures are the most commonly affected in people with gout.However, the effect of gout on foot and ankle muscle strength is not well understood. The primary aim of this study was to determine whether differences exist in foot and ankle muscle strength for ankle plantarflexion, dorsiflexion, inversion and eversion between people with gout and age-and sex-matched controls. The secondary aim was to determine whether foot and ankle muscle strength was correlated with foot pain and disability.Methods Peak isokinetic concentric muscle torque was measured for ankle plantarflexion, dorsiflexion, eversion and inversion in 20 participants with gout and 20 matched controls at two testing velocities (30°/s and 120°/s) using a Biodex dynamometer. Foot pain and disability was measured using the Manchester Foot Pain and Disability Index (MFPDI).Findings Participants with gout demonstrated reduced muscle strength at both the 30°/s and 120°/s testing velocities for plantarflexion, inversion and eversion (p<0.05). People with gout also displayed a reduced plantarflexion-to-dorsiflexion strength ratio at both 30 o /s and 120 o /s (p<0.05). Foot pain and disability was higher in people with gout (p<0.0001) and MFPDI scores were inversely correlated with plantarflexion and inversion muscle strength at the 30°/s testing velocity, and plantarflexion, inversion and eversion muscle strength at the 120°/s testing velocity (all p<0.05).Interpretation People with gout have reduced foot and ankle muscle strength and experience greater foot pain and disability compared to controls. Foot and ankle strength reductions are strongly associated with increased foot pain and disability in people with gout.

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Section: Discussionmentioning

confidence: 99%

Foot and ankle muscle strength in people with gout: A two-arm cross-sectional study

Stewart

Mawston

Davidtz

et al. 2016

Clinical Biomechanics

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“…In addition to ankle dorsiflexion, researchers 40,41 have shown that both the TA and PL have coupled activity during inversion and eversion of the ankle, which helps the ankle remain in a neutral position and maintains balance during the stance phase of gait. With our experimental task, this coupled activity was likely used to maintain mediolateral ankle and body stability, especially after the kick (CPA2).…”

Section: Discussionmentioning

confidence: 99%

Changes in Postural Control After a Ball-Kicking Balance Exercise in Individuals With Chronic Ankle Instability

Conceição

Araújo

Santos

et al. 2016

Journal of Athletic Training

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Context:Rehabilitation programs for patients with chronic ankle instability (CAI) generally involve balance-perturbation training (BPT). Anticipatory postural adjustments (APAs) and compensatory postural adjustments (CPAs) are the primary strategies used to maintain equilibrium during body perturbations. Little is known, however, about how APAs and CPAs are modified to promote better postural control for individuals with CAI after BPT.Objective: To investigate the effect of BPT that involves kicking a ball on postural-control strategies in individuals with CAI.Design: Randomized controlled clinical trial. Setting: Laboratory. Patients or Other Participants: We randomly assigned 44 volunteers with CAI to either a training group (TG; 11 women, 11 men; age ¼ 24 6 4 years, height ¼ 173.0 6 9.8 cm, mass ¼ 72.64 6 11.98 kg) or control group (CG; 11 women, 11 men; age ¼ 22 6 3 years, height ¼ 171.0 6 9.7 cm, mass ¼ 70.00 6 11.03 kg).Intervention(s): The TG performed a single 30-minute training session that involved kicking a ball while standing on 1 foot. The CG received no intervention.Main Outcome Measure(s): The primary outcome was the sum of the integrated electromyographic activity ( PR EMG) of the lower extremity muscles in the supporting limb that were calculated during typical intervals for APAs and CPAs. A secondary outcome was center-of-pressure displacement during similar intervals.Results: In the TG after training, the PR EMG decreased in both dorsal and ventral muscles during compensatory adjustment (ie, the time interval that followed lower limb movement). During this interval, muscle activity ( PR EMG) was less in the TG than in the CG. Consequently, center-of-pressure displacement increased during the task after training.Conclusions: A single session of ball-kicking BPT promoted changes in postural-control strategies in individuals with CAI. These results should stimulate new and more comprehensive studies to investigate the effect of this and other BPT techniques on postural control in patients with CAI.Key Words: recurrent sprains, reactive responses, balance training Key PointsAfter balance-perturbation training, postural sway increased during the ball-kicking activity and decreased during a static task in individuals with chronic ankle instability. Ventral and dorsal muscle activity decreased just before kicking the ball, and tibialis anterior and peroneus longus activity increased after the kick in the balance-perturbation-training group. Researchers should conduct more comprehensive studies to determine if balance-perturbation training improves postural control and simultaneously augments ankle stability in individuals with chronic ankle instability.

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“…Previous research has shown that PL plays a major role in maintaining balance and that TA supports some aspects of balance (Louwerens et al 1995). TA activity increases to stabilize the ankle joint when balance is disturbed (Baumhauer et al 1995;Louwerens et al 1995).…”

Section: Introductionmentioning

confidence: 99%

“…TA activity increases to stabilize the ankle joint when balance is disturbed (Baumhauer et al 1995;Louwerens et al 1995). The CoP displacement has been used to identify definite postural instability (Kalron and Achiron 2013) and has a negative correlation with the maximal isometric torque of ankle muscles (Cattagni et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Correlation between Mechanical Properties of the Ankle Muscles and Postural Sway during the Menstrual Cycle

Yim

Petrofsky²,

Lee

2018

Tohoku J. Exp. Med.

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Ankle and foot injuries are common among athletes and physically active individuals. The most common residual disability, ankle sprain, is characterized by instability along with postural sway. If the supporting structures around a joint become lax, posture stability and balance are also affected. Previous studies have examined muscle stiffness and elasticity and postural sway separately; however, the relationship between these factors is yet unknown. It is well known that the levels of sex hormones, especially estrogen, change in women over the phase of the menstrual cycle. Therefore, this study examined the relationship between the mechanical properties of tissue and balance activity using a non-invasive digital palpation device to determine if they undergo any changes over the menstrual cycle in young women. Sixteen young women with regular menstrual cycles completed the study. Tone, stiffness, and elasticity of the ankle muscles (lateral gastrocnemius, peroneus longus, and tibialis anterior) were measured using a non-invasive digital palpation device. Postural sway was recorded while the participants performed balance tasks during ovulation and menstruation. Significantly greater posture sway characteristics and ankle muscle elasticity were found during ovulation than during menstruation; lower tone and stiffness of the ankle muscles were observed at ovulation (p < 0.05). Additionally, weak-to-strong relationships between ankle muscle mechanical properties and postural sway characteristics were found (p < 0.05). These results suggest the effect of estrogen on human connective tissues. We therefore postulate that estrogen increases joint and muscle laxity and affects posture stability according to the phase of the menstrual cycle.

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Peroneus longus and tibialis anterior muscle activity in the stance phase: A quantified electromyographic study of 10 controls and 25 patients with chronic ankle instability

Cited by 79 publications

References 21 publications

Foot and ankle muscle strength in people with gout: A two-arm cross-sectional study

Foot and ankle muscle strength in people with gout: A two-arm cross-sectional study

Changes in Postural Control After a Ball-Kicking Balance Exercise in Individuals With Chronic Ankle Instability

Correlation between Mechanical Properties of the Ankle Muscles and Postural Sway during the Menstrual Cycle

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