• Title, Summary, Keyword: Double Muscle

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Correlation between Trunk Stabilization Muscle Activation and Gait Parameters (몸통 안정화 근육과 보행요소의 상관관계)

  • Chae, Jung-Byung;Jung, Ju-Hyeon
    • PNF and Movement
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    • v.17 no.1
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    • pp.111-118
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    • 2019
  • Purpose: This study aimed to investigate the correlation between trunk stabilization muscle activation and the parameters of gait analysis in healthy individuals. Methods: Thirty healthy adults (15 male, 15 female) with no history of lower back pain (LBP) or current musculoskeletal and neurological injuries were studied. Trunk stabilization muscle activation (e.g., external oblique, internal oblique, transverse abdominis, erector spinae) were assessed using surface electromyography. To analyze gait, we measured temporal parameters (e.g., gait velocity, single support phase, double support phase, swing phase, and stance phase) and a spatial parameter (e.g., H-H base of support). Results: A statistically significant correlation was found between the internal oblique, transverse abdominis, and erector spinae muscle activity and gait velocity, single support phase, double support phase, swing phase, and stance phase. No statistically significant correlation was found between the external oblique muscle activity and the gait velocity, single support phase, double support phase, swing phase, and stance phase. No statistically significant correlation was found between the external oblique, internal oblique, transverse abdominis, and erector spinae muscle activity and the spatial parameter. Conclusion: This study demonstrated that a relationship exists between trunk stabilization muscle activation and temporal parameter (i.e., gait velocity, single support phase, double support phase, swing phase, and stance phase) during gait analysis. Therefore, the trunk's stabilizer muscles play an important role in the gait of healthy individuals.

Effect of Ribcage Stabilization Using a Belt on EMG Activity of the Abdominal Muscles During Double Leg Lowering in the Supine Position (벨트를 이용한 가슴우리 고정이 누운자세에서 다리내리기 동안 복부 근육들의 근활성도에 미치는 영향)

  • Weon, Jonghyuck
    • Journal of The Korean Society of Integrative Medicine
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    • v.5 no.2
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    • pp.25-32
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    • 2017
  • Purpose : The purpose of this study was to determine the effect of ribcage stabilization using a belt in the supine position during double leg lowering (DLL) by investigating the electromyographic (EMG) activities of the abdominal muscles. Methods : Twenty-two subjects with lumbar extension syndrome were recruited. EMG activity was recorded from rectus abdominalis (RA) and internal oblique abdominalis (IO), external oblique abdominalis (EO) muscles while subjects performed three double leg lowering exercises: double leg lowering (DLL), double leg lowering with abdominal draw-in maneuver (DLL-ADIM), and double leg lowering with ribcage stabilization using a belt (DLL-belt). RA, IO, and EO EMG activity were analyzed via one-way repeated-measures analysis of variance (ANOVA). Bonferroni correction was performed where significant differences were identified (p<.017, .05/3). Results : RA, IO, and EO EMG activity differed significantly among the three exercises (p<.05). The use of post hoc pair-wise comparison with Bonferroni correction showed that RA muscle activity significantly differed among the three exercises (p<.017), and IO muscle activity in the DLL exercise was significantly decreased compared to the DLL-ADIM and DLL-belt exercises (p<.017). There was no significant difference between IO muscle activity for DLL-ADIM and DLL-belt exercises (p>.017). EO muscle activity in the DLL-belt exercise was significantly increased compared to both DLL and DLL-ADIM exercises (p<.017), but there was no significant difference between EO muscle activity for DLL and DLL-ADIM exercises (p>.017). Conclusion : DLL-belt is a more effective exercise for activating the abdominal muscles than DLL-ADIM exercise. Therefore, we recommend DLL-belt exercises for strengthening the abdominal muscles.

Surgical Treatment of Double Chambered Right Ventricle: A Case Report (이강 우심실: 1례 보고)

  • 안광필
    • The Korean Journal of Thoracic and Cardiovascular Surgery
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    • v.11 no.1
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    • pp.65-68
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    • 1978
  • The unusual congenital anomaly, double chambered right ventricle due to aberrant muscle band with intact ventricular septum in 10 years old female patient is presented. The pressure gradient is 70mmHg between inflow tract and outflow tract of right ventricle and the aberrant muscle band is 2X4.5cm arising below the infundibulum and traverses the right ventricular cavity, extending from its anterior wall to the crista supraventricularis forming broad triangular base in parietal anterior wall. By resecting out this muscle band clearly, the outflow tract obstruction is completely relieved.

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Two Cases of Idiopathic Scoliosis with Double Curved Thoracolumbar Spine using Muscle Energy Technique (근에너지기법을 이용한 흉요추부 이중만곡 형태의 특발성 척추 측만증 호전 2례)

  • Lee, Sung-Joon;Lee, Hyuk-Jae;Lee, Yu-Jin
    • The Journal of Korea CHUNA Manual Medicine for Spine and Nerves
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    • v.12 no.2
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    • pp.63-71
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    • 2017
  • Objectives : The purpose of this study is to report the effect of muscle energy technique(MET) on idiopathic scoliosis with double curved thoracolumbar spine. Methods : Two patients with idiopathic scoliosis with double curved thoracolumbar spine were treated by MET. To investigate the outcome of the patients' improvement, we observed the standing X-ray of cervical, thoracic, lumbar spine. And Cobb's angle, correctability and visual analog scale(VAS) were used to measure changes during treatment. Results : After treatment, Cobb's angle, correctability and VAS were improved significantly. Conclusions : MET showed significant improvement to idiopathic scoliosis with double curved thoracolumbar spine. There is limitation on this study due to insufficient number of cases. Further research should be followed.

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The immediate effects of 830-nm low-level laser therapy on the myofascial trigger point of the upper trapezius muscle in visual display terminal workers: A randomized, double-blind, clinical trial

  • Lee, Jung-Hoon;Lee, Sun-Min
    • International Journal of Contents
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    • v.7 no.2
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    • pp.59-63
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    • 2011
  • The aim of our study was to evaluate the immediate effects of an 830-nm Aluminium gallium arsenide (GaAlAs) laser, by examining the changes, in pressure-pain threshold (PPT) and tenderness at 3 kg of the myofascial trigger point (MTrP) of the upper trapezius muscle in visual display terminal (VDT) workers in comparison with placebo treatment. Thirty VDT workers (13 males, 17 females) with complaints of upper trapezius muscle were recruited. All participants were given either active GaAlAs laser (830 nm wavelength, 450 mW, 9 J at point) or placebo GaAlAs laser, according to the double-blinded and placebo-controlled trial. Both active and placebo low-level laser therapy (LLLT) treatments showed no significant effect on PPT and tenderness at 3 kg. These results suggest that a higher dosage may be necessary to produce immediate effects when applying LLLT to the MTrP of relatively large muscles such as the upper trapezius muscle.

The comparison of muscle activity according to various conditions during smartphone use in healthy adults

  • Kim, You Lim;Yoo, Jaehyun;Kang, Sinwoo;Kim, Taerim;Kim, Namyeol;Hong, Sojeong;Hwang, Wonjeong;Lee, Suk Min
    • Physical Therapy Rehabilitation Science
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    • v.5 no.1
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    • pp.15-21
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    • 2016
  • Objective: The purpose of this study was to see the changes in muscle activity of the upper limb in persons using a smartphone. Design: Cross-sectional study. Methods: An experiment was conducted to target 15 right-handed university students. Experiments were carried out for students using cell phones for more than a year. In this study, experiments were carried out with one-handed and both handed operation of smartphone use in a sitting position, the same parameters with smartphone use in a standing position. The experiments were carried out by having the subjects write a text message in Korean on the smartphone for 3 minutes repeated 3 times with a rest period of 10 seconds given between each 3 minute period. Electromyography (EMG) was used to record the muscle activity of the upper trapezius (UT), extensor carpi radialis (ECR), and abductor pollicis (AP) during phone operation. Results: The muscle activity of the AP and ECR were significantly higher during single handed compared to double handed in both sitting and standing position (p<0.05). The muscle activity of the ECR was significantly higher in standing position compared to sitting position with double handed use of the smartphone (p<0.05). UT muscle activity of the right has been activated more than twice compared to the left UT in a sitting position (p<0.05). And UT muscle activity on the right has been activated more than five times compared to the left in a standing position (p<0.05). Conclusions: Using smartphone with double hand is useful for the prevention of musculoskeletal disorders.

The Effects of Fatigue in the Non-Paretic Plantarflexor Muscle on Spatial and Temporal Gait Parameters during Walking in Patients with Chronic Stroke (만성 편마비 환자의 비마비측 발바닥굽힘근 근피로가 시·공간적 보행변수에 미치는 영향)

  • Lee, Jae-Woong;Koo, Hyun-Mo
    • PNF and Movement
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    • v.16 no.3
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    • pp.355-363
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    • 2018
  • Purpose: The purpose of this study was to obtain detailed and quantified data concerning the effects of plantarflexor muscle fatigue induced in the non-paretic side on the spatial and temporal gait parameters of the bilateral lower extremities during walking in stroke patients. Methods: This study was conducted on 20 patients with chronic stroke. The load contraction fatigue test was applied to induce muscle fatigue in the non-paretic plantarflexor muscle. Step length, stride length, double support, gait velocity and cadence, and functional ambulatory profile (FAP) score in the bilateral lower extremities were measured using a gait analysis system in order to investigate changes in temporal and spatial gait parameters caused by muscle fatigue on the non-paretic side. The statistical significance of the results was evaluated using a paired t-test. Results: A review of the results for gait parameters revealed a significant increase in double support (p<0.05) and a significant decrease in step length, stride length, gait velocity and cadence, and FAP score (p<0.05). Conclusion: These results indicate that the muscle fatigue in the non-paretic side of the stroke patients also affected the paretic side, which led to a decrease in gait functions. This implies a necessity to perform exercise or training programs in a range of clinical aspects not causing muscle fatigue.

Analysis of Muscle Activities of Lower Extremity in Jumping Pattern (점프유형에 따른 하지의 근 활동 형태연구(근전도 데이터 표준화 방법을 중심으로))

  • Lee, Sung-Cheol;Hwang, In-Seong;Cho, Young-Jae;Kim, Sun-Jung
    • Korean Journal of Sport Biomechanics
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    • v.15 no.2
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    • pp.155-165
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    • 2005
  • The purpose of this study was to compare the muscle activities of Double Legged Jump (DLJ) and Single Legged Jump (SLJ) by the normalization of muscle activity. Eight college students without the lower extremity injuries were selected as subjects for collecting EMG data of vastus medialis and gastrocnemius. The entire section of motion was established as eccentric and concentric contractions, and each of the contractions was divided into three sections with equal timing intervals, which becomes a total of 6 phases. The EMG data of each phase was integrated and normalized. The muscle activities of the vastus medialis for both eccentric and concentric contractions were significantly different between DLJ and SLJ(p<.05). The increase in overall muscle activity of SLJ was 33.6%. Approximately, there was an increase of 25.9% in eccentric contraction and 40% in concentric contraction. Moreover, the data of the muscle activity of gastrocnemius was similar to the data of the muscle activity of vastus medialis. In conclusion, this research suggests muscle activity of a certain motion can be normalized for an analysis of another motion.

Anorectal malformation with didelphys uterus: Extremely rare anomaly and successful neoanal sphincter reconstruction with gracilis muscle flap

  • Burusapat, Chairat;Hongkarnjanakul, Natthawoot;Wanichjaroen, Nutthapong;Panitwong, Sakchai;Sangkaewsuntisuk, Jiraporn;Boonya-ussadorn, Chinakrit
    • Archives of Plastic Surgery
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    • v.47 no.3
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    • pp.272-276
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    • 2020
  • Anorectal malformation or imperforate anus is a congenital anomaly of rectum and anus. Mullerian duct anomalies are abnormal development of uterus, cervix, and vagina. Imperforate anus with double uterus is extremely rare and cannot explain by normal embryologic development. Moreover, guideline in treatment is inconclusive. We report an extremely rare case of a young adult female who presented with recurrent pelvic inflammatory disease caused by rectovaginal fistula in congenital imperforate anus and didelphys uterus, and successfully neoanal reconstruction with gracilis muscle flap. Aims for treatment are closed rectovaginal fistula, and anal sphincter reconstruction. To our best knowledge, the imperforate anus with double uterus is extremely rare anomaly. Furthermore, successfully anal sphincter reconstruction with functional gracilis muscle in the imperforate anus with double uterus has never been reported in English literature.

Ultrasound Diagnosis of Double Crush Syndrome of the Ulnar Nerve by the Anconeus Epitrochlearis and a Ganglion

  • Lee, Sang-Uk;Kim, Min-Wook;Kim, Jae Min
    • Journal of Korean Neurosurgical Society
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    • v.59 no.1
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    • pp.75-77
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    • 2016
  • Double compression of the ulnar nerve, including Guyon's canal syndrome associated with cubital tunnel syndrome caused by the anconeus epitrochlearis muscle, is a very rare condition. We present a case of double crush syndrome of the ulnar nerve at the wrist and elbow in a 55-year-old man, as well as a brief review of the literature. Although electrodiagnostic findings were consistent with an ulnar nerve lesion only at the elbow, ultrasonography revealed a ganglion compressing the ulnar nerve at the hypothenar area and the anconeus epitrochlearis muscle lying in the cubital tunnel. Careful physical examination and ultrasound assessment of the elbow and wrist confirmed the clinical diagnosis prior to surgery.