• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.1
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• pp.220-226
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• 2012

The purpose of this study was to identify the effect of treadmill gradient training on lower limb muscle activity in chronic stroke patients. The subject were 32 stroke patients.. Subjects were randomly divided into three group which were control group($0^{\circ}$treadmill training(n=10)) and experimental group($5^{\circ}$treadmill training (n=10) and $10^{\circ}$treadmill training(n=12)). Three groups received treadmill gradient training for 30 minutes while 3 times per week for 6 weeks in addition to conventional physical therapy. Muscle strength was measured by EMG on rectus femoris, biceps femoris, tibialis anterior and gastrocnenius for muscle activities. In comparison of activity of rectus femoris and gastrocnemius between pre and post value, the activity of rectus femoris was significant in the experimental and control group(p<.05) and the activity of biceps femoris was significant in the $5^{\circ}$treadmill gait training group and $10^{\circ}$treadmill gait training group(p<.05). The activity of tibialis anterior was significant in the $5^{\circ}$treadmill gait training group and $10^{\circ}$treadmill gait training group(p<.05). In comparison of the difference of activity of rectus femoris among 3 groups, there was a significant difference between the $5^{\circ}$treadmill gait training group and control group(p<.05). and difference of activity of tibialis anterior was significant difference between the $10^{\circ}$treadmill gait training group and control group(p<.05). These findings suggest that $5^{\circ}$treadmill gait training group and $10^{\circ}$treadmill gait training group can be used to improve lower limb muscle activity in chronic stroke patient. In conclusion, these treadmill gradient training helped improving function of gait ability in chronic stroke patient.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.11
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• pp.5730-5736
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• 2013

The study was conducted to determine the effect of trunk pattern training in proprioceptive neuromuscular facilitation(PNF) and weight-shift training on the muscle activity and static balance in patients with hemiplegia due to stroke. Twenty patients with hemiplegia due to stroke were assigned to the trunk pattern training in PNF group(n=10) or weight-shift training group(n=10). Both groups were executed conventional treatment for 5 times per week for 6 weeks 30 minutes per session. Each group performed additional training for 20 minutes. Post training, compared to the weight-shift training group, trunk pattern training in PNF group showed significantly increased on muscle activity of rectus femoris, gastrocnemius and static balance(p<.05). These results support the perceived benefits of trunk pattern training in PNF to augment on the static balance and muscle activity of stroke patients. Therefore, trunk pattern training in PNF is feasible and suitable for stroke patients.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.11 no.1
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• pp.11-28
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• 2005

Spasticity has been defined as "a motor disorder characterized by a velocity-dependent increased in tonic stretch reflexes with exaggerated tendon jerks, resulting from hyperexcitability of the stretch reflex, as one components of the upper motorneuron syndrome". Spasticity is one of the common symptoms of stroke patients and frequently interferes with the motor functions such as gait, posture and activities of daily living. Therefore, its management is becoming a major issue in physical therapy. The purpose of this study was to determined the effects of reciprocal inhibition by isometric contraction of pre-tibia muscle on spasticity in hemiplegic patients through Hoffmann reflex. The subjects were consisted 45 patients who had hemiplegia due to stroke. All subjects randomly assigned to 3 group: manual reciprocal inhibition program group(manual group), neuromuscular electrical stimulation group(NMES group) and control group. The manual group received voluntary isometric contraction of pre-tibia muscle. The NMES group received neuromuscular electrical stimulation on tibialis anterior. The control group was not received any therapeutic intervention. Before and after experiments, Hoffmann reflex, M-wave and Modified Ashworth scale was measure in all patients. The data of 30 patients who complete experimental course were statistically analysed. Modified Ashworth scale were significantly decreased after experiment in manual group(p<.01). The Hmax/Mmax ratios were significantly decreased after experiment in manual group(p<.o1). There were no statistical difference between pre-test and post-test with modified Ashworth scale in NMES group(p>.01). There were no statistical difference between pre-test and post-test with Hmax/Mmax ratios in NMES group(p>.01). There were no statistical difference between pre-test and post-test with modified Ashworth scale in control group(p>.01). There were no statistical difference between pre-test and post-test with Hmax/Mmax ratios in control group(p>.01). The present results revealed that reciprocal inhibition which produced by voluntary isometric contraction of pre-tibia muscle can be reduce spasticity of gastrocnemius. Therefore, reciprocal inhibition is useful to improve functional activities in hemiplegic patient. Further study should be done to analyse the effects of intervention duration of reciprocal inhibition, appropriate muscle contraction, optimal time to apply the reciprocal inhibition in more long period.

• The Journal of Korean Physical Therapy
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• v.29 no.4
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• pp.194-200
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• 2017

Purpose: This study examined the effect of Kettle bell swing exercise on the body composition and lower limb muscular activity. Methods: As subjects, 26 normal adults in their twenties were divided randomly into the experiment group (n=13), in which Kettle bell exercise was applied, and the control group (n=13), in which bar exercise was applied. Both groups participated in the interventions for eight weeks with three sessions per week. Each group was assessed before training and four and eight weeks into the training to determine the effects of training intervention within and between the groups. The body composition was measured with a body composition analyzer. The changes in muscle activity were measured with a surface electromyography. An independent t-test was conducted to test the significance between the groups according to the measurement points and Repeated measured ANOVA was performed to compare the groups according to the periods with the statistical significance level set to ${\alpha}=0.05$. Results: No significant changes to the main effects of time and the interactions of time according to the measurement points were observed in the Kettle bell and control groups in the body composition (p>0.05). The muscular activity of both muscles were significantly different between the Kettle bell and control groups according to the measurement points with the exception of the right lateral gastrocnemius muscle (p<0.05). Conclusion: These findings suggest that Kettle bell swing exercise can have positive effects on the development of lower limb muscles.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.06a
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• pp.903-906
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• 2005

The purpose of this study was to analyze the muscular force of swing using the soft golf club in comparison with the muscular force of swing using normal golf club. The subject was normal adult (twenties) and performed swing motion using normal and soft golf club. And then we compared muscular power soft golf club with normal golf club of the subject. The muscular power of the subject was measured by MP 100(BIOPAC Systems, Inc.). For the analysis of muscular power of swing using soft golf club, we measured EMG(Electromyography) of the subject. The position of muscle was deltoid, latissimus dorsi, external oblique and rectus abdominis of the upper limbs and rectus femoris, biceps femoris, gastrocnemius and soleus of the lower limbs. The result of experiment, muscle pattern of swing using soft golf club was similar to pattern of swing using normal golf club and muscular power of subjects using the soft golf was smaller than normal golf.

• Journal of the Korean Academy of Clinical Electrophysiology
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• v.5 no.2
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• pp.1-9
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• 2007

Purpose: The purpose of this study was to investigate influence of superficial heat and deep heat for lumbo-sacral segment on H-reflex. Methods: Subjects of this research were 12 normal men and women (6 men and 6 women) and they were assigned to superficial heat group (6) and deep heat group (6). Heat treatment was applied between Th12-L2 by placing them at prone posture. superficial heat was applied for 20 min at 30 cm height with infrared lamp. Deep heat was applied for 20 mm at 5 cm height with 100 watt of microwave diathermy. H-reflex used diagnostic electromyography, active electrode was placed at muscle belly of medial gastrocnemius muscle at prone posture and electrical stimulation was given to posterior tibial nerve. Measurement was made before and after experiment and 10 min. and 20 min. after experiment. All data were analyzed with window 12.0 program, comparison of differences among measured items of groups according to repeated measurement was made with repeated measures ANOVA and significance level a was 0.05. Results: M latency at latency analysis showed little changes at two groups. H latency was reduced a little immediately after experiment and recovered to original state, there was significant difference. In analysis of amplitude, Mmax amplitude showed rise a little immediately after.

• Journal of the Korean Academy of Clinical Electrophysiology
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• v.4 no.1
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• pp.13-25
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• 2006

This study aims to suggest clinical basis of physical therapy of neuromuscular system complication in type diabetic patients through a variety II of analysis methods including echogenicity using ultrasound image and measurement of peripheral nerve function to their neuromuscular system and provide basic materials for preparing evaluation of physical therapy and intervention program. Subjects of this study were 75 type II diabetic patients between 40 and 80 years old and it obtained the following results through echogenisity and function of peripheral nerve. Incidence of neuropathy in type II diabetes was 55.8% in men and 53.1% in women, and total incidence of neuropathy was 54.7%. Echogenicity of patients with neuropathy was significantly increased compared to that of patients with neuropahty. It was also found that there were correlations between function of peripheral nerve and echogenicity of tibialis anterior and gastrocnemius muscle. In addition, it will be important for physical therapists to divide type II diabetic patients into neuropathy and myopathy and interpret and approach changes of neuro-muscular system from comprehensive side.

• Journal of the Korean Academy of Clinical Electrophysiology
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• v.9 no.2
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• pp.19-24
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• 2011

Purpose : This study is to examine the effects of transcranial direct current stimulation on the excitability of the central neuron. Methods : This study selected 24 suitable women in their twenties. A positive electrode of transcranial direct current stimulation was placed on the primary motor area (M1) C4 and a negative electrode was placed on the left supraobital. A stimulation of 0.04mA/$cm^2$ was applied for 20 minutes. H-reflex and V wave used diagnostic electromyography. An active electrode was placed at the muscle belly of the medial gastrocnemius muscle at a prone posture. An electrical stimulation was given to the posterior tibial nerve. Measurements were made before and after the stimulation. All data were analyzed with SPSS 12.0 and between each measuring before and after the change of the H-reflex and V wave amplitude. Results : There were no significant differences in all H wave, M wave, and V wave amplitude before and after transcranial direct current stimulation. There were no significant differences in the change of H/M ratio and V/M ratio before and after transcranial direct current stimulation. Conclusion : We know that transcranial direct current stimulation cannot have an influence on a normal grown-up person's central neuron.

• The Journal of Korean Physical Therapy
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• v.21 no.1
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• pp.19-25
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• 2009

Purpose: We investigated the changes that effects of load stimulation (LS) on static balance and muscle activities in normal healthy elders and chronic stroke patients. Methods: Subjects were instructed twenty normal healthy elders (8 men and 12 women) and ten chronic stroke patients (4 men and 6 women). They were tested while standing on a force platform under two conditions; LS, no LS were applied in random order. Prior to testing, adhesive surface EMG electrodes were fastened to the skin overlying the right (non-paralytic side in stroke patient) bellies of tibialis anterior (TA) and lateral gastrocnemius (LG) muscles. They were assessed on postural sway and %MVC (Maximum voluntary contraction) of TA and LG. Results: Participants showed that the application of LS brought about a decrease in postural sway as expressed by average sway path and velocity. %MVC of TA and LG were increased. The application of LS to normal and stroke patients decreases postural sway during quite stance. Conclusion: These findings the application of LS to normal and stroke patients improves static balance.

• Journal of Chest Surgery
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• v.42 no.5
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• pp.653-656
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• 2009

The entrapment of the popliteal artery is a rare cause of ischemia of the lower extremities among young males. The development of local occlusive or aneurysmal changes of the popliteal artery is caused by abnormal anatomic relationships between vascular and musculo-tendinous structures in the popliteal fossa. An 18-year-old male visited our outpatient clinic with the chief complaint of claudication in his right calf. Three dimensional CT angiography showed an occlusion of the popliteal artery and less opacified arteries of the right leg. Intraoperatively, the popliteal artery was compressed by an accessory muscle band arising from the medial head of the gastrocnemius. After release of the muscle band, thrombectomy with endarterectomy was done. Three years after surgery, he is doing well without any problems.