Tag: Electromyography

Analyzing the Influence of scapular stabilizers on chronic lateral epicondylitis using EMG in the diabetic population

K. Vidya Raj, G.A. Geetha Hari Priya, P.Antony Leo Aseer

K. Vidya Raj, G.A. Geetha Hari Priya, P.Antony Leo Aseer – Analyzing the Influence of Scapular Stabilizers on Chronic Lateral Epicondylitis Using EMG in the Diabetic Population. Fizjoterapia Polska 2023; 23(5); 346-355

DOI: https://doi.org/10.56984/8ZG20Bz0J

Abstract
Background. Lateral epicondylitis(LE), or tennis elbow, is caused by repetitive stress on the forearm tendons, leading to pain and inflammation. Diabetes increases the risk of developing tennis elbow due to increased accumulation of advanced glycation end products in collagenous tissues. Rehabilitation contribute to the development of this imbalance between the stability and mobility muscles. Objectives. To analyse the influence of scapular stabilizers and lateral epicondylitis in patients with T2DM using electromyography, handheld push pull dynamometer, quickDASH scale among south indian population. Methodology. 13 patients with diabetic LE and 13 non diabetic chronic LE. To find the strength of the upper trapezius, middle trapezius, lower trapezius , and serratus anterior using EMG & HHD. quickDASH for functional disabilities Paired and unpaired t-test methods were used to determine group differences. Results. There was significance between affected and non-affected limb among diabetic subjects in UT, MT and SA muscles using EMG and also significance in the same group of muscles along with LT muscle among non-diabetic population . Using HHD, there was significance between affected and non-affected limb among diabetic subjects in MT, LT and SA muscles and also significance in the same group of muscles along with UT muscle among non-diabetic population. quickDASH questionnaires show a highly significance between diabetic and non-diabetic groups. Considering analysis between groups showed no significant difference using EMG and significant difference only in UT using HHD. Conclusion. Study concluded that there was significant influence between affected and non-affected sides, but no significance between diabetic and non-diabetic group.

Keywords
scapular stabilizers, chronic lateral epicondylitis, electromyography, hand held dynamometer, quickDASH

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The impact of knee pain on body balance and electromyographic activity of the quadriceps muscle in fencers during the lunge movement

Nurruddin Priya Budi Santoso, Mahendra Wahyu Dewangga, Shodiq Hutomono, Joko Sulistyono, Herywansyah, Yulian Muhammad Adhitama, Adhy Kurniawan


Nurruddin Priya Budi Santoso, Mahendra Wahyu Dewangga, Shodiq Hutomono, Joko Sulistyono, Herywansyah, Yulian Muhammad Adhitama, Adhy Kurniawan – The impact of knee pain on body balance and electromyographic activity of the quadriceps muscle in fencers during the lunge movement. Fizjoterapia Polska 2023; 23(3); 26-31

DOI: https://doi.org/10.56984/8ZG143F33

Abstract
Introduction. The lack of research on fencing in Indonesia and the absence of analysis on muscle activation in the lower leg muscles, especially the quadriceps muscles, during fencing movements, such as lunges, is a significant gap in the existing literature. This knowledge gap is especially pronounced for athletes with knee pain and quadriceps angle differences. Knee pain causes athletes to experience a decrease in performance, one of which is caused by a decrease in balance. Purpose: This study aims to determine the difference in balance in athletes with knee pain and without knee pain and to determine the activation of the rectus femoris muscle, vastus medialis muscle, and vastus lateralis muscle in the lunge movement in athletes participating in fencing with sable and floret numbers. in the Fencing Sports Activity Unit at Tunas Pembangunan University (UTP) Surakarta. Methods. A descriptive and analytical observational research design was employed for this cross-sectional study, using purposive sampling to recruit seven fencing athletes of UTP. Stork balance test was used to check the balance score and surface electromyography records were used to collect data, and the data analysis was conducted using the nonparametric Mann-Whitney U test. Results. The results of this study prove that the body balance scores of athletes who have complaints of knee pain are significantly worse (p < 0.05) compared to fencers who do not have complaints of knee pain. Knee pain also significantly reduced the activation of the rectus femoris, vastus medialis, and vastus lateralis muscles (p < 0.05). Conclusion. Based on the results and discussion above, knee pain significantly decreases body balance and quadriceps muscle activity.

Keywords
knee pain, body balance, quadriceps, muscle activity, electromyography

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Variation in bioelectric activity of trunk extensors during loading with symmetric gravity torques in children with idiopathic scoliosis

Wiesław Chwała, Marianna Białek, Maciej Płaszewski

Wiesław Chwała, Marianna Białek, Maciej Płaszewski – Variation in bioelectric activity of trunk extensors during loading with symmetric gravity torques in children with idiopathic scoliosis. Fizjoterapia Polska 2008; 8(4); 393-400

Abstract
Background. Conflicting evidence is available on trunk erectors’ bioelectrical activity patterns during loading with symmetrical gravity torques in subjects with idiopathic scoliosis. This represents a significant hindrance to utilizing such information in scoliosis therapy. To identify the pattern of bioelectrical activity of trunk extensors during static contractions against symmetrical loading with body mass in subjects with idiopathic single- and double-curve scolioses of different Cobb angles. Material and methods. Biopotential activity was measured in 192 subjects aged 10-16 years with Cobb angles of 12-62°, of whom 59 had double-curve and 133 had single-curve thoracic scoliosis. Results. Biopotentials from dominant and non-dominant sides differed significantly in both tasks in patients with single-curve scoliosis (p&lt;0.001). Muscle contraction patterns in double-curve scoliosis at the level of the primary curvature differed significantly in both tasks (p&lt;0.001). Differences in contraction patterns at the level of the secondary curve were not significant (p&lt;0.05). Conclusions. Significant differences were found in activity patterns of the muscles investigated between patients with singleand double-curve scolioses. The pattern of asymmetry is not directly connected with either severity or location of the curve (p&lt;0.05, non-significant).
Key words:
electromyography, scoliosis, trunk extensors
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Possibilities for precise measurement of increased muscle tone secondary to spinal cord injury with surface electromyography

Aleksandra Zagłoba-Kaszuba Juliusz Huber, Wanda Stryła, Dorota Warzecha, Marcin Wytrążek, Joanna Lipiec

Aleksandra Zagłoba-Kaszuba Juliusz Huber, Wanda Stryła, Dorota Warzecha, Marcin Wytrążek, Joanna Lipiec – Possibilities for precise measurement of increased muscle tone secondary to spinal cord injury with surface electromyography. Fizjoterapia Polska 2011; 11(1); 9-19

Abstract
This paper presents the results of comparative bilateral global surface electromyography (gEMG) recordings from selected upper and lower extremity muscles in patients undergoing rehabilitation following spinal cord injuries at C4-Th8 levels. It was assumed that this technique can enable precise monitoring of changes in muscle tone during treatment in patients with spinal injuries.Surface gEMG recordings were obtained at rest (complete muscle relaxation) and during maximum muscle contraction in 12 patients (aged from 21 to 45 years) from the anterior tibial muscle, gastrocnemius muscle and abductor pollicis brevis muscle before and after four weeks of rehabilitation.Signs of increased muscle tone during surface gEMG recordings at rest observed in the patients were associated with elevated amplitude (mean 52μV). This parameter decreased to a mean of 37μV following rehabilitation. The observed decrease in muscle tone was accompanied by an increase in mean gEMG amplitude of the muscles during their maximum effort.Surface gEMG recordings are a precise diagnostic tool serving to evaluate not only muscle performance during maximum effort but also muscle tone at rest.
Key words:
spasticity, Electromyography, spinal injury
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Application of manual therapy in the elimination of myogenic pain in stomatognathic system disorders

Magdalena Gębska, Danuta Lietz-Kijak, Krystyna Opalko,
Ewelina Żyżniewska-Banaszak, Zbigniew Śliwiński, Marek Kiljański

M. Gębska, D. Lietz-Kijak, K. Opalko, E. Żyżniewska-Banaszak, Z. Śliwiński, M. Kiljański – Application of manual therapy in the elimination of myogenic pain in stomatognathic system disorders. FP 2015; 15(2); 60-67

Abstract

Introduction. In last years there has been considerable development of physiotherapy methods used in dentistry. Among them is the manual therapy as a_form of treatment of functional disorders of the stomatognathic system muscular origin. This method is still very popular among dentists. This is because a_small number of literature, and a_small amount of physiotherapists involved in manual therapy in order to eliminate the symptom of pain.
Aim of the study. determined the effect of relaxing and analgesic masseter muscles under the influence of the use of manual therapy.
Material and methods. study was performed in 20 females, aged from 40 to 45  pain diagnosed as a_disorder of the stomatognathic system. In patients conducted physical examination and clinical examination, electromyographic study of masseter muscles and pain assessment using the VAS scale. Then, the test group received manual therapy treatments.
Results. After completion of therapy and analysis of the results showed a_decrease in the electrical potentials studied muscle and decrease of the VAS scale

Key words:
stomatognathic system, manual therapy, electromyography, pain, VAS scale

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Electromyographic responses of the quadriceps muscles to fast and slow perturbations after fatiguing exercise

Nosratollah Hedayatpour,  Zahra Izanloo

N. Hedayatpour,  Z. Izanloo – Electromyographic responses of the quadriceps muscles to fast and slow perturbations after fatiguing exercise. FP 2017; 17(1); 24-27

Abstract

Introduction. An appropriate postural response of the quadriceps muscle to an unexpected perturbation reduces the risk of knee injuries. The aim of this study was to investigate the effect of fatigue on postural response of the quadriceps to fast and slow perturbations.
Material and method. Fatigue induced to the quadriceps muscle using a KinCom Isokinetic Dynamometer (Chattanooga, TN). Bipolar surface electromyographic (EMG) signals were simultaneously recorded from quadriceps components (vastus medialis, rectus femoris, and vastus lateralis) during pre- and post-fatigue postural perturbation performed at two different velocities of 120 ms and 250 mes.
Results. Maximal voluntary knee extension force and time to task failure were significantly reduced after fatiguing knee exercise (P < 0.05). The ARV of EMG during fast-perturbation was significantly higher than slow-perturbation (P < 0.05). Moreover, The ARV of EMG was significantly reduced during post fatigue perturbation, with a largest reduction identified for fast-perturbation compared with slow perturbation (P < 0.05).
Conclusion. Reduction in quadriceps muscle activity during post fatigue fast-perturbation was significantly larger than post fatigue slow- perturbation, most likely due to preferential recruitment of fast twitch muscle fiber which is more susceptible to fatigue. This may partly explain that why knee injuries is common after fast ballistic movement.

Key words:
Electromyography, Perturbation, Fatigue, Quadriceps, Velocity

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