• Physical Therapy Korea
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• v.21 no.3
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• pp.11-19
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• 2014

The purpose of this study was to investigate the activity of the transverse abdominal muscle resulting from changed posture by measuring the thickness of the transverse abdominal muscle in a supine posture, a slouched sitting posture, and an erect sitting posture. The subjects of the study were 28 patients with cerebral palsy. All their transverse abdominal muscles at the end of inhalation were measured at supine, slouched sitting (S sitting) and erect sitting (E sitting) postures by using ultrasonography, and then their dynamic sitting balance was measured at S sitting and E sitting postures by using BioRescue. For the statistical analysis, the Kruskal-Wallis test and the Wilcoxon signed-rank test were used to compare the differences among each the postures. The results were as follows. The thickness of the transverse abdominal muscle when comparing the supine posture and the S sitting posture showed no statistically significant difference. But the E sitting posture showed a statistically significant difference as compared with the others. In addition, the dynamic sitting balance in comparing the S sitting and E sitting postures showed a significant difference. In conclusion, the E sitting posture has a more positive effect on postural control and balance than generally taking the S sitting posture, for the sitting posture of a patient with cerebral palsy. It is suggested that patients with cerebral palsy mainly experiencing a sedentary life or being in a wheelchair should be seated in the E sitting posture during their daily life, and it may be necessary to continue to monitor and manage the proper E sitting posture.

• Journal of the Korean Academy of Clinical Electrophysiology
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• v.8 no.1
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• pp.43-50
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• 2010

Purpose : The objective of this study is to effect of an aquatic rotation control and obstacle avoidance when conducted underwater on hemiplegia patient's balance ability and vestibular function. Methods : Twelve hemiplegia patients participated and were randomly assigned to a control group(I) with standard physical therapy and an aquatic group(II) with an aquatic rotation control, obstacle avoidance and standard physical therapy as well. The aquatic group trained using a Halliwick rotation control and obstacle avoidance through 3 times per week over 6 weeks. For all subjects, vestibular function, their balance, the change of electrooculogram (EOG), the change of accelerometer axis and torsiometer according to visual sense, vestibular sense with galvanic vestibular stimulation (GVS) or not during leg close stance were measured. Results : The EOG in the vertical and horizontal (p<0.05) were both significantly lowered. The change was significantly lower in the trajectory range of motion of trunk and spine with torsiometer when leg close stand (p<0.01) and leg close stand with GVS (p<0.01). The centre of gravity accelerated, there were reduced significantly difference X and Y axis of accelerometer during the closing of the leg without vision (p<0.05). There were reduced significantly difference X and Z axis of accelerometer during the closing of the leg with GVS (p<0.05). There were reduced significantly difference X and Z axis of accelerometer during the closing of the leg and close eyes with GVS (p<0.05). Conclusion : The balance ability, vestibular system and postural control is improved.

• Science of Emotion and Sensibility
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• v.5 no.4
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• pp.67-75
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• 2002

The purpose of this study is to assess the ability of balance control in virtual moving surround stimulation using head mount display (HMD) device and force platform in patients with brain injury. Fifteen patients with stroke (mean age 54.47 yrs) and fifteen healthy normal persons participated. COP parameters were obtained total path distance, frequency of anterior-posterior and medial-lateral component by FFT analysis, weight-spectrum analysis in the two different conditions; (1) during comfortable standing with opened or closed eyes, (2) during virtual moving surround stimulation delivered using HMD with four different moving pattern. Moving patterns consisted of close-far, superior-inferior lilting (pitch) , right-left tilting (roll) and horizontal rotation (yaw) movement. In all parameters, the test-retest reliability was high. Also, the construct validity of virtual moving surround stimulation was excellent (p＜0.05). A posturographic balance assessment system equiped with virtual moving surround stimulation using HMD is considered clinically useful in evaluation of balance control in patients with brain injury.

• Journal of the Korean Society of Physical Medicine
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• v.15 no.4
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• pp.75-85
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• 2020

PURPOSE: Cerebral palsy is a common cause of disability in children, requiring constant rehabilitation. Improving balance in children with cerebral palsy helps to alleviate daily movement and the quality of life. This study examines a program that combines Resistance Exercise and Group Exercise, and investigates the effect on trunk control ability, balance ability, maximum grip strength, and quality of life of children with cerebral palsy. METHODS: Totally, 9 children with cerebral palsy participated in this study. Resistance exercise was performed for 8 weeks, 40 minutes every day. Group Exercise was conducted for 8 weeks, 40 minutes each Sunday. All participants were evaluated by the Korean version of the trunk control measurement scale, pediatric reach test, grip strength test, and KIDSCREEN-52. RESULTS: The trunk control ability was significantly improved in all subcategories (p < .05). In the pediatric reach test, the left and right directions were significantly improved (p < .05). Maximum grip strength was significantly improved in both hands (p < .05). The quality of life significantly improved in total score, physical well-being, general moods, self-perception, autonomy, relationship with parents, and home life (p < .05). CONCLUSION: Considering the encouraging results, we propose to use Resistance Exercise and Group Exercise as programs other than rehabilitation treatment in hospitals, to improve motor function and quality of life of children with cerebral palsy.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.1
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• pp.294-300
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• 2013

The purpose of this study was to analyse the effects of yoga exercise on balance ability and gait velocity in stroke patients. Subjects were categorized in to a control group and yoga program group with 9 for each group. Yoga program was conducted for 60minute for 8weeks, three times a week. For the purposes, the study measured Stability Index(SI, postural sway) and Weight Distribution Index(WDI) using Tetrax, Functional Reach Test(FRT), Dynamic Gait index(DGI) and 10 meter walking test. At pre- and post-exercise after appling the yoga exercise, the data was analyzed. Yoga exercise group's SI and WDI were decreased, FRT and DGI were increased in comparison with control group. But 10 meter walking test was no significance. It suggests that the yoga exercise could promote recovery from balance disorder after stroke.

• Physical Therapy Rehabilitation Science
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• v.11 no.3
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• pp.311-320
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• 2022

Objective: To investigate the reliability and validity of static balance measurements using an acceleration sensor and a gyroscope sensor in smart phone inertial sensors. Design: Equivalent control group pretest-posttest. Methods: Subjects were forty five healthy adults aged twenty to fifty-years-old who had no disease that could affect the experiment. After pre-test, all participants wore a waist band with smart phone, and conducted six static balance measurements on the force plate twice for 35 seconds each. To investigate the test-retest reliability of both smart phone inertial sensors, we compared the intra-correlation coefficient (ICC 3, 1) between primary and secondary measurements with the calculated root mean scale-total data. To determine the validity of the two sensors, it was measured simultaneously with force plate, and the comparision was done by Pearson's correlation. Results: The test-retest reliability showed excellent correlation for acceleration sensor, and it also showed excellent to good correlation for gyroscope sensor(p<0.05). The concurrent validity of smartphone inertial sensors showed a mostly poor to fair correlation for tandem-stance and one-leg-stance (p<0.05) and unacceptable correlation for the other postures (p>0.05). The gyroscope sensor showed a fair correlation for most of the RMS-Total data, and the other data also showed poor to fair correlation (p<0.05). Conclusions: The result indicates that both acceleration sensor and gyroscope sensor has good reliability, and that compared to force plate, acceleration sensor has unacceptable or poor correlation, and gyroscope sensor has mostly fair correlation.

• Physical Therapy Rehabilitation Science
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• v.12 no.3
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• pp.214-221
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• 2023

Objective: This study aimed to assess the impact of using the LED light electromyographyfeedback system (EMG-light) during Pilates exercises in women to maintain consistent muscle contraction in the abdominal external oblique muscles and reduce muscle contraction in the upper trapezius muscles. This study compared Pilates training using the EMG-light with Pilates training only in healthy women for 4 weeks. Design: This study was conducted as a cross-sectional study. Methods: A total of 17 healthy women were divided into an experimental group (n=9) and a control group (n=8). Both groups performed Pilates exercises as assigned, twice per week for four weeks, with each session lasting fifty minutes. The experimental group were used the EMG-light feedback system during pilates exercise while the control group did not use EMG-light. We used cervical vertebral angle (CVA), shoulder tilt angle to evaluate neck posture and standing balance with closed eye for 30s before and after exercise. Results: The control group exhibited a significant change in CVA (p<0.05). Both groups showed significant changes in shoulder tilt, center of pressure (COP) path-length, and COP velocity during eyes-closed conditions (p<0.05). However, there were significant differences between the experimental and control groups in terms of CVA, shoulder tilt, COP path-length, and COP velocity. Conclusions: This study demonstrated that Pilates exercises had positive effects on shoulder posture and balance. The use of EMG-light provided real-time visual feedback on muscle contraction during Pilates exercise. However, the experimental group did not show significant improvements compared to the control group, which performed Pilates exercises without feedback.

• Journal of Digital Convergence
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• v.11 no.11
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• pp.537-544
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• 2013

This study was to determine the effect of 12-week balance training with visual feedback on balance and walking functions in patients with post-stroke hemiparesis. Twenty individuals with chronic stroke volunteered to participate in this study. They were randomly allocated to either experimental group (EG) or control group (CG), with 10 subjects in each group. Subjects from the group 1 underwent 15-min balance training with visual feedback and 15-min routine-scheduled physical therapy, and subjects from the group 2 performed 30-min routine-scheduled physical therapy only, which comprised mat exercise, strengthening, postural correction, and functional practice. Assessment tools were made with the Functional Reach Test (FRT), Timed Up and Go Test (TUGT), and 6 Min Walk Test (6MWT). In within-group comparison, the EG showed significant differences in all parameters (p<0.05), while significant differences were not found for the CG (p>0.05). In between-group comparison, the change values of the FRT and 6MWT appeared to be significantly greater for the EG than those of the CG (p<0.05). These findings suggest that balance training with visual feedback may be favorably used to improve balance and walking functions in patients with chronic post-stroke hemiparesis. Further studies with larger sample and long-term follow-up period need to generalize the results of this study.

• Korean Journal of Acupuncture
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• v.33 no.4
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• pp.157-165
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• 2016

Objectives : The purpose of this study was to examine whether or not Postural Yinyang Correction of TMJ(Temporomandibular joint) using Standard intraoral appliance could decrease chronic low back pain. Methods : We reviewed the medical records of 40 patients with TMJ disorder aged from 30 to 70 years from 124 patients who were treated in chronic low back pain at Department of Acupuncture & Moxibustion of Korean Medicine Hospital of Dong-Eui University from November $1^{st}$, 2015 to June $5^{th}$, 2016. The patients were divided into 2 groups: Group A and Group B. In Group A, we treated the patients with acupuncture, sweet bee venom treatment and FCST(Functional Cerebrospinal Therapy) through Standard intraoral appliance from ABA(Accurate Balancing Appliance), Full body exercise therapy, and Upper cervical alignment balance therapy. In Group B, we treated the patients with acupuncture and sweet bee venom treatment. To estimate the effectiveness in controlling pain, we analyzed the Visual analog scale(VAS). To evaluate functional change of patients, we analyzed the Oswestry low back disability questionnaire(ODI). Results : In both groups, VAS and ODI decreased significantly. In the VAS, the result of Group A is significantly more effective than that of Group B. In the ODI, the result of Group A is statistically less effective compared to that of Group B, but not significantly. Conclusions : According to the results, Postural Yinyang Correction of TMJ using Standard intraoral appliance may be effective treatment for low back pain, but the further researches are needed.

• 한국체육학회지인문사회과학편
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• v.58 no.6
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• pp.449-459
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• 2019

The purpose of this study is to identify how postural mechanics affects postural control on balance and stability by using frequency analysis technique from the kinematic data acquired during the one leg standing posture. For this purpose, the experimental group consisted of two groups, the normal group (n=6) and the national Gymnastics group (n=6). Displacement data of CoP were analyzed by frequency analysis of rambling (RM) and trembling (TR) by FFT signal processing. As a results, there was a significant difference in evaluating the stabilization index between the two groups with the eyes open and closed one leg stnading (p <.05). The cause of the difference was found to be the output of the maximum amplitude of RM (f1) and TR (f2) (p <.05). In particular, in the low frequency RM of 8-9 Hz, which is a natural frequency of signal wave involved in postural feedback feedback, the main frequency appeared to be performs the exercise mechanism of stable brain posture control. And in the high frequency TM of 120-135 Hz, it is considered that the adaptation of the reflective muscle response is minimized to minimize posture shaking. In conclusion, this study provides evidence for the intrinsic main frequencies according to the postural control ability which affects the CNS in one leg standing.