• Title, Summary, Keyword: Surface electromyograph

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Effect of Sling Exercise on Muscle Activity and Pain in Patients with Rotator Cuff Repair

  • Kim, Jae-Woon;Kim, Yong-Nam
    • The Journal of Korean Physical Therapy
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    • v.29 no.2
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    • pp.45-49
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    • 2017
  • Purpose: This study was conducted to determine the effects of sling exercise on muscle activity and pain in patients with rotator cuff repair. Methods: This research evaluated 20 rotator cuff repair patients, divided randomly between 10 controls and 10 in an experimental group who performed a sling exercise. Both the experimental and control groups underwent transcutaneous electrical nerve stimulation and performed continuous passive motion. Muscle activity was measured with a surface electromyograph and pain was measured with the visual analogue scale. The paired t-test was used to compare groups before and after the experiment. The independent t-test was conducted to assess differences in the degree of change between the two groups before and after the experiment. Results: Within-group comparison of both the experimental and control group showed significant differences in muscle activity and pain. Comparison of the groups revealed significant differences in muscle activity between groups group, but not in pain. Conclusion: These results indicate that sling exercise is effective for improving muscle activity of rotator cuff repair patients.

The Effects of Psychological Stress on Neck Muscles (정신적 스트레스가 경항부 근육에 미치는 영향)

  • Kwon, Ho-Young;Kim, Jeong-Hwan
    • Journal of Korean Medicine Rehabilitation
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    • v.20 no.1
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    • pp.119-132
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    • 2010
  • Objectives : The purpose of this study is to compare interrelations between stress and muscles of neck through stress response inventory(SRI), 7 zone diagnostic system and surface electromyography(sEMG). Methods : This study was carried out with the data from SRI, 7 zone diagnostic system and sEMG. First subjects were divided into two group according to the SRI points. subjects in group A had points of SRI in which lower than 30 points. Subjects in group B had points of SRI in which higher than 30 points. And subjects were divided into nonstress group(Group C) and stress grouop(Group D) according to the result of 7 zone diagnostic system. Then we investigated how to differentiate the muscle contraction, fatigue, recovery and asymmetry ratio on sEMG for each groups. Results : In this study, the muscle contraction of both upper trapezius muscle and left sternocleidomastoid muscle and left scalene muscle in stress group were higher than nonstress group significantly. And the muscle recovery of left sternocleidomastoid muscle and left scalene muscle in stress group were higher than nonstress group significantly. Conclusions : This results show that the stress was associated with muscle condition.

Effects of Deltoid Inhibition Taping on the Surface Electromyographic Activity of Shoulder Girdle Muscles During Upper Limb Elevation in Healthy Shoulders

  • Kim, Suhn-Yeop;Oh, Duck-Won;Kim, Taek-Yean;Nam, Soo-Jin;Yoo, Hwan-Suk
    • Physical Therapy Korea
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    • v.15 no.4
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    • pp.34-42
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    • 2008
  • This study aimed to examine whether McConnell taping for deltoid inhibition affects the Electromyographic (EMG) activity of shoulder girdle muscles during arm elevation. Ten young healthy men were randomly assigned to an experimental and control groups of five men each. For the experimental group, we performed taping for deltoid inhibition on the skin over anterior and posterior deltoids with non-elastic specific tape, and sham-taping with non-elastic under-tape for the control group. Surface EMG measurements were performed three times (before, during and after the tapings) at upper and lower trapezius, mid-deltoid, and serratus anterior muscles while elevating dominant aim with loading and unloading conditions. In deltoid inhibition taping group, there were significant differences in EMG activity of mid-deltoid (p<.05) and serratus anterior (p<.05) muscles during arm elevation with loading. During arm elevation without loading, the EMG activity was significantly decreased for MD in the McConnell taping group (p<.05). The findings indicate that deltoid inhibition taping can modify the activation patterns in shoulder girdle muscles as well as in deltoid muscle. in clinical setting. it may be effectively used for the management of patients with shoulder dysfunction.

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A Biomechanical Analysis According to Passage of Rehabilitation Training Program of ACL Patients (전방십자인대 수술자의 재활트레이닝 경과에 따른 운동역학적 분석)

  • Jin, Young-Wan
    • Korean Journal of Sport Biomechanics
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    • v.23 no.3
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    • pp.235-243
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    • 2013
  • The purpose of this study was to analyse scientific according to period of rehabilitation training of ACL patients. ACL patients seven subjects participated in this study. Gait (1.58 m/sec) analysis was performed by using a 3-D Cinematography, a Zebris system and a electromyograph system. The data were analyzed by paired t-test. The joint angles were recorded from the ankle, knee, hip joints. Peak max dorsi-flexion and peak max plantar-flexion identified significant differences (p<0.05). Another angles were no significant difference. Vertical force (Fz) and max pressure variables improved 6 month RTP better than 3 month RTP. EMG were collected from 4 muscles (rectus femoris, biceps femoris, gastrocnemius, tibialis anterior) with surface electrides in gait system. EMG signals were rectified and smoothed data. EMG signas were no significant difference but they also improved 6 month RTP better than 3 month RTP. More research is necessary to determine exactly what constitutes optimal rehabilitation training period for ACL patients.

Comparison of Low Limb Muscle Activity during Squat Exercise according to Hip Joint Flexion Angle (엉덩관절 굽힘 각도에 따른 쪼그려 앉기 운동 시 하지의 근활성도 비교)

  • Min, Dong-Ki
    • The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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    • v.19 no.2
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    • pp.55-60
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    • 2013
  • Background: The purpose of this study was to determine if there is a difference in activation of the rectus femoris, vastus medialis oblique, vastus lateralis, semitendinosus, and biceps femoris when performing normal free squat with standinding position and free squat with $30^{\circ}$ flexed hip joint. Methods: Electromyograph surface electrodes were placed on the rectus femoris, vastus medialis oblique, vastus lateralis, semitendinosus, and biceps femoris of 19 healthy college students. The participants performed standing bilateral squats and standing bilateral squats with $30^{\circ}$ flexed hip joint with EMG measures taken upon initiation of muscle activity as confirmed by an electronic goniometer. Participants completed one trial with the EMG time measurements on each type. Results: There was a significant difference between normal squats(standing squats) and normal squats with $30^{\circ}$ flexed hip joint. The normal squat exercise was statistically higer than normal squat exercise with $30^{\circ}$ flexed trunk except for semitendinosus and biceps femoris that shown slightly high. Conclusions: As a result of this study, there were increases of muscle activity in both ways. In particular, it may be more beneficial for knee joint stabilization to perform normal squat exercise with standing position relatively.

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The Effects of Action Observation Training on Lower Limb Muscle Activity and Dynamic Balance in Chronic Stroke Patients (동작관찰훈련이 만성 뇌졸중 환자의 하지 근 활성도 및 동적 균형에 미치는 영향)

  • Kim, Jae-Woon;Son, Young-Lan;Kim, Yong-Nam
    • PNF and Movement
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    • v.17 no.2
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    • pp.245-252
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    • 2019
  • Purpose: The purpose of this study was to determine the effects of action observation training on lower limb muscle activity and dynamic balance in chronic stroke patients. Methods: This study evaluated 20 chronic stroke patients who were divided randomly into a control and an experimental group comprising 10 patients each. Both the experimental group and the control group performed the general exercise therapy provided by the hospital, but the experimental group also performed action observation training. Lower limb muscle activity was measured with a surface electromyograph, and dynamic balance was measured with the Timed Up and Go test and the 10-meter walk test. The paired t-test was used to compare the groups before and after the experiment. Furthermore, the independent t-test was used to assess differences in the degree of change between the two groups before and after the experiment. Results: The within-group comparisons for both the experimental group and the control group showed significant differences in muscle activity and dynamic balance (p<0.05). In a comparison between the groups, the differences in the muscle activity and dynamic balance of the experimental group appeared significant compared with those of the control group (p<0.05). Conclusion: The study results indicate that action observation training is effective in improving the muscle activity and dynamic balance of chronic stroke patients.

The Effects of the Task-Oriented Trunk Training on Muscle Strength and Muscle Activity of Trunk, Balance and Gait in Stroke Patients (뇌졸중 환자의 과제지향몸통훈련이 몸통 근력과 근활성도, 균형 및 보행에 미치는 효과)

  • Oh, Gkubin;Lee, Hyojung
    • Journal of The Korean Society of Integrative Medicine
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    • v.8 no.1
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    • pp.203-217
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    • 2020
  • Purpose : This study aimed to determine whether task-oriented trunk training can improve muscle strength, muscle activity, balance, and gait in stroke patients. Methods : A total of 27 stroke patients who agreed to participate in the study were randomly divided into the following two groups: (1) experimental group 1, task-oriented training applied to the proximal part (n=14) and (2) experimental group 2, task-oriented training applied to the distal part (n=13). Thereafter, task-oriented trunk training was accordingly applied in each group for 60 minutes per session, 5 times per week for 6 weeks. Muscle power, muscle activity, balance, and gait were assessed using a digital dynamometer, surface electromyograph, Timed Up and Go (TUG) test, and gait analyzer (G-WALK), respectively, before and after training. Results : Trunk muscle strength significantly increased in both groups after training (p<.05). and there was a significant difference between the groups. Muscle activity in the stance phase during gait significantly increased in both groups after training (p<.05), and there was a significant difference between the groups. Muscle activity in the swing phase during gait significantly increased in both groups after training (p<.05), and there was a significant difference between the groups. The TUG test values significantly increased in both groups after training (p<.05), and there was a significant difference between the groups. Gait significantly increased in both groups after training (p<.05), and there was a significant difference between the groups. Conclusion : The results of this study show that task-oriented training can improve trunk muscle strength, muscle activity, balance, and gait in stroke patients.

Comparison of Dead Bug Exercise and Abdominal Draw-in Exercise on the Activities of Lumbar Extensor Muscles and the Pelvic Angle during Prone Hip Extension in Women with Weak Abdominal Muscles (복부근력이 약한 여성에게 데드버그 운동과 복부 드로우-인 운동이 엉덩관절 폄 시 허리폄근의 근활성도와 골반각도에 미치는 영향 비교)

  • Kim, Dongwoo;Cho, Namjeong;Kim, Taeho
    • Journal of The Korean Society of Integrative Medicine
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    • v.8 no.2
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    • pp.1-9
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    • 2020
  • Purpose : The aim of this study was to compare the effects of the abdominal draw-in exercise (ADIE) and the dead bug exercise (DBE) on the pelvic anterior tilt angle and the activities of the gluteus maximus (GM), erector spinae (ES), and semi tendinosus (ST) during prone hip extension. Methods : A total of 22 female adults with weak abdominal muscles were divided into two groups: ADIE group (n=11) and DBE group (n=11). The muscle activities of the GM, ES, and ST along with the pelvic anterior tilt angle during prone hip extension were measured using a wireless surface electromyograph and gyro sensor before performing the prescribed exercise. Two groups conducted the assigned exercise for 10 minutes. After the exercise, their muscle activities and the pelvic anterior tilt angle were equally re measured. Results : In the DBE group, the muscle activity of GM was significantly increased after the intervention (p<0.05). However, there was no significant difference between the two groups in the amount of increase in the activity of GM (p>0.05). Moreover, in both groups, the activity of ES and the pelvic anterior tilt angle decreased significantly after the intervention (p<0.05) The decreased quantity in the pelvic anterior tilt angle and in the activity of ES showed no difference between the two groups (p>0.05). In the activity of ST, there was no significant difference within and between the two groups (p>0.05). Conclusion : Therefore, we suggest that ADIE and DBE are effective for women with weak abdominal muscles since the ES activity and pelvic anterior tilt angle are reduced during prone hip extension.