scholarly journals Tensiomyographic Neuromuscular Response of the Peroneus Longus and Tibialis Anterior with Chronic Ankle Instability

Healthcare ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 707
Author(s):  
Tsubasa Tashiro ◽  
Noriaki Maeda ◽  
Junpei Sasadai ◽  
Somu Kotoshiba ◽  
Shogo Sakai ◽  
...  
Keyword(s):  
Tibialis Anterior ◽  
Contractile Response ◽  
Ankle Instability ◽  
Muscle Thickness ◽  
Contraction Time ◽  
Peroneus Longus ◽  
Significant Difference ◽  
Maximum Work ◽  
Work Done ◽  
Muscle Contractile

This study aimed to investigate the muscle contractile response of the peroneus longus (PL) and tibialis anterior (TA) in groups with and without chronic ankle instability (CAI) using tensiomyography. Twenty-three adults, 12 with CAI and 11 healthy participants, participated in this study. All subjects underwent a tensiomyographic assessment of the PL and TA to measure delay time, contraction time and maximal displacement. The ankle evertor and invertor normalized peak torques, maximum work done and muscle thickness of the PL and TA were calculated. The delay time and contraction time of the PL in the CAI side were significantly higher than those in the healthy group (p < 0.05); however, no significant difference could be detected in the TA between groups. Furthermore, there was no significant difference in the normalized peak torques, maximum work done and muscle thickness of the PL and TA between groups. The CAI side demonstrated a delayed muscle contractile response of the PL when compared with the healthy group although there was no difference in muscle strength and muscle size. Clinicians should consider the muscle contractile response of the PL for rehabilitation of the ankle evertor with CAI.

Comparison of the Strength and Electromyography of the Evertor Muscles With and Without Toe Flexion in Patients With Chronic Ankle Instability

2020 ◽  
Vol 41 (4) ◽  
pp. 479-485
Author(s):  
Sun-hee Ahn ◽  
Ui-jae Hwang ◽  
Gyeong-tae Gwak ◽  
Hwa-ik Yoo ◽  
Oh-yun Kwon
Keyword(s):  
Interaction Effect ◽  
Muscle Activity ◽  
Significant Interaction ◽  
Ankle Instability ◽  
Chronic Ankle Instability ◽  
Metatarsal Bone ◽  
Significant Interaction Effect ◽  
Healthy Group ◽  
Peroneus Longus ◽  
Significant Difference

Background: Weakness of evertor strength is controversial in chronic ankle instability (CAI). Ankle evertor muscles are attached to the toe joints as well as to the metatarsal bone. Therefore, it is necessary to consider toe joint position for the measurement of evertor strength. The purpose of this study was to compare ankle evertor strength and muscle activity during eversion with and without toe flexion (TF) in individuals with CAI and individuals in a healthy group. Methods: Fifteen subjects with CAI and 15 healthy subjects participated in this study. Isometric ankle evertor strength and muscle activity of the peroneus longus (PL), peroneus brevis (PB), and extensor digitorum longus (EDL) were measured during eversion with and without TF. Results: The results indicated a significant interaction effect in evertor strength ( P = .03) and no significant interaction effect on EMG of the PL ( P = .08), PB ( P = .12), and EDL ( P = .28). However, measurements of muscle activity of the PL and PB between eversion with and without TF revealed a significant difference in the CAI group ( P < .01) and no significant difference in the healthy group (PL: P = .07; PB: P = .13). Conclusion: The results indicated that subjects with CAI had increased EDL compensation and reduced selective activation of the PL and PB during eversion. Clinical Relevance: Our findings suggest that clinicians should consider the activation of EDL when training the evertor of patients with CAI.

scholarly journals Muscle Activation During Landing Before and After Fatigue in Individuals With or Without Chronic Ankle Instability

2016 ◽  
Vol 51 (8) ◽  
pp. 629-636 ◽  
Author(s):  
Kathryn A. Webster ◽  
Brian G. Pietrosimone ◽  
Phillip A. Gribble
Keyword(s):  
Effect Size ◽  
Tibialis Anterior ◽  
Muscle Activation ◽  
Ankle Instability ◽  
Gluteus Maximus ◽  
Gluteus Medius ◽  
Control Group ◽  
Physically Active ◽  
Peroneus Longus ◽  
Before And After

Context: Ankle instability is a common condition in physically active individuals. It often occurs during a jump landing or lateral motion, particularly when participants are fatigued. Objective: To compare muscle activation during a lateral hop prefatigue and postfatigue in individuals with or without chronic ankle instability (CAI). Design: Cross-sectional study. Setting: Sports medicine research laboratory. Patients or Other Participants: A total of 32 physically active participants volunteered for the study. Sixteen participants with CAI (8 men, 8 women; age = 20.50 ± 2.00 years, height = 172.25 ± 10.87 cm, mass = 69.13 ± 13.31 kg) were matched with 16 control participants without CAI (8 men, 8 women; age = 22.00 ± 3.30 years, height = 170.50 ± 9.94 cm, mass = 69.63 ± 14.82 kg) by age, height, mass, sex, and affected side. Intervention(s): Electromyography of the tibialis anterior, peroneus longus, gluteus medius, and gluteus maximus was measured before and after a functional fatigue protocol. Main Outcome Measure(s): Activation of 4 lower extremity muscles was measured 200 milliseconds before and after landing from a lateral hop. Results: We observed no interactions. The group main effects for the peroneus longus demonstrated higher muscle activation in the CAI group (52.89% ± 11.36%) than in the control group (41.12% ± 11.36%) just before landing the lateral hop (F1,30 = 8.58, P = .01), with a strong effect size (d = 1.01). The gluteus maximus also demonstrated higher muscle activation in the CAI group (45.55% ± 12.08%) than in the control group (36.81% ± 12.08%) just before landing the lateral hop (F1,30 = 4.19, P = .049), with a moderate effect size (d = 0.71). We observed a main effect for fatigue for the tibialis anterior, with postfatigue activation higher than prefatigue activation (F1,30 = 7.45, P = .01). No differences were present between groups for the gluteus medius. Conclusions: Our results support the presence of a centralized feed-forward neuromuscular alteration in patients with CAI, not only in the ankle-joint muscles but also in the proximal hip muscles. These results may have implications for rehabilitation programs in these patients.

scholarly journals Correlation between age, muscle architecture, and muscle strength in children with Erb’s palsy

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Ahmed Saad Awad ◽  
Mostafa Soliman Ali ◽  
Mohamed Ismail Elassal
Keyword(s):  
Muscle Strength ◽  
Muscle Weakness ◽  
Muscle Thickness ◽  
Study Groups ◽  
Pennation Angle ◽  
Muscle Architecture ◽  
Active Movement ◽  
Significant Relation ◽  
Erb’S Palsy ◽  
Significant Difference

Abstract Background Muscle weakness is a widespread problem in children with Erb’s palsy as it can cause changes in muscle architecture parameters, which can be detected by ultrasonography. This study was conducted to determine the relation between age, muscle architecture, and muscle strength in children with Erb’s palsy. A total of 40 children with Erb’s palsy from both sexes aged 1–2.5 years were included in this study. Muscle thickness and pennation angle were measured by ultrasonography, and muscle strength was measured using the active movement scale. Results A significant relation was found between age, muscle thickness, pennation angle, and muscle strength (P < 0.05). Moreover, a significant difference was found in muscle architecture parameters during relaxation and contraction in both study groups and in each study group (P < 0.05). Conclusion Muscle weakness in children with Erb’s palsy has an effect on muscle architecture parameters, and these parameters also increase with age.

Dantrolene Sodium: Effects on Crustacean Muscle

1974 ◽  
Vol 52 (4) ◽  
pp. 887-890 ◽  
Author(s):  
L. L. Odette ◽  
H. L. Atwood
Keyword(s):  
Skeletal Muscle ◽  
Electrical Properties ◽  
Neuromuscular Transmission ◽  
Contractile Response ◽  
Callinectes Sapidus ◽  
Muscle Membrane ◽  
Dantrolene Sodium ◽  
Muscle Contractile ◽  
Indirect Stimulation ◽  
Vertebrate Skeletal Muscle

The effect of dantrolene sodium, a muscle relaxant effective on vertebrate skeletal muscle, has been studied on the stretcher muscle of a crab (Callinectes sapidus). The drug rapidly and reversibly attenuates the muscle contractile response to direct and indirect stimulation. Neuromuscular transmission is unaffected, as are the electrical properties of the muscle membrane. It is concluded that dantrolene sodium uncouples excitation–contraction mechanisms in crustacean tonic muscle.

Fibre-free diet leads to impairment of neuronally mediated muscle contractile response in rat distal colon

2006 ◽  
Vol 18 (12) ◽  
pp. 1093-1101 ◽  
Author(s):  
r. mitsui ◽  
s.-i. karaki ◽  
y. kubo ◽  
y. sugiura ◽  
a. kuwahara
Keyword(s):  
Contractile Response ◽  
Distal Colon ◽  
Rat Distal Colon ◽  
Muscle Contractile

The Correspondence Between Some Motor Points and Acupuncture Loci

1975 ◽  
Vol 03 (04) ◽  
pp. 347-358 ◽  
Author(s):  
Y. King Liu ◽  
Maria Varela ◽  
Robert Oswald
Keyword(s):  
Statistical Analysis ◽  
Tibialis Anterior ◽  
Double Blind Study ◽  
Vastus Medialis ◽  
Abductor Pollicis Brevis ◽  
Double Blind ◽  
Orbicularis Oculi ◽  
Peroneus Longus ◽  
Uv Illumination ◽  
Splenius Capitis

A double blind study was conducted to establish the possible correspondence between some motor points and acupuncture loci. THe protocol calls for the acupuncturist marking the first group of volunteers with invisible ink at the acupuncture loci. Then the motor points in the same volunteer are found by electrodiagnosis. The error is made visible by UV illumination. In the second group, the procedure is reversed. A statistical analysis of the error yields the following classes of correspondences: (a) Excellent: 1st Dorsal Interosseus (hand) = LI-4; Abductor Pollicis Brevis = Lu-10; Abductor Minimi Digiti = SI-4; 1st Dorsal Interosseus (foot)=LI-3; Tibialis Anterior = Curious Locus; Orbicularis Oculi = GB-I; Frontalis = GB-14; Splenius Capitis = GB-20; Sternocleidomastoid = LI-18; Semi-Spinalis Capitis = BI-10. (b) Good: Opponens Pollicis = Curious Locus; Peroneus Longus = Curious Locus; Flexior Digitorum Longus = Ki-3 (Ki-6); Trapezius (upper) = GB-21; Rectus Abdominis=Ki-15; Vastus Medialis = Sp-10.

Kinesio taping techniques for ankle stabilisation in patients with stroke: a single-blinded randomised controlled study

2021 ◽  
Vol 28 (2) ◽  
pp. 1-12
Author(s):  
Ramazan Kurul ◽  
Tamer Cankaya ◽  
Necmiye Un Yildirim
Keyword(s):  
Barthel Index ◽  
Intervention Group ◽  
Controlled Study ◽  
Timed Up And Go ◽  
Peroneus Longus ◽  
Kinesio Taping ◽  
Functional Reach ◽  
Significant Difference ◽  
Functional Reach Test ◽  
Peroneus Brevis

Background/AimsAnkle proprioception and neuromuscular feedback from this region provides the sensory input needed for balance. The aim of this study was to investigate the effects of repeated correction taping applied on the ankle and peroneus longus and peroneus brevis muscles on balance and gait in patients with stroke.MethodsA total of 61 patients with stroke with a mean age of 62.25 ± 7.04 years were included in this study. The patients were randomly divided into two groups. The control group (n=30) received 1 hour of rehabilitation, which took place during weekdays over the course of 2 weeks. The intervention group (n=31) received 1 hour of daily rehabilitation as well as having kinesio tape applied to their ankle. Both groups were assessed with the Balance Evaluating Systems Test, Timed Up and Go Test, Functional Reach Test, Tetrax Balance System and Barthel Index. Clinical assessments were performed at baseline, immediately after the first application, 1 week and 2 weeks later, following the first taping.ResultsThere was a significant improvement in the Balance Evaluating Systems and Functional Reach Tests scores between the first and last measurements in favour of the intervention group (P<0.05). There were no significant changes between baseline and immediately after assessment for all measurements (P>0.05). There was no significant difference in Tetrax scores, Timed Up and Go Test and Barthel Index scores (P>0.05).ConclusionsIn this study, it was found that dynamic balance was improved by taping the peroneus longus and peroneus brevis muscles, but the static balance did not change. One week of kinesio taping would be beneficial; however, prolonged use would not provide further improvement.

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