• 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.

• Physical Therapy Rehabilitation Science
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• v.10 no.2
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• pp.147-155
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• 2021

Objective: This study is to investigate the effect of real-time feedback from the therapist on posture, muscle strength, pain of subjects with forward head posture based on a non-face-to-face complex exercise program. Design: Two-group pretest-posttest design. Methods: Thirty healthy men and women in their twenties with forward head posture with a Craniovertebral angle of 52° or less were targeted, the final selection was made as 15 experimental groups who performed the non-face-to-face intervention program while receiving real-time feedback and 15 control subjects who performed the non-face-to-face intervention program without providing feedback. Six of them were eliminated, and a total of 24 were conducted as subjects. All exercise groups performed an exercise program three times a week, 30 minutes each, for a total of two weeks. Before and after exercise, Craniovertebral angle (CVA), CranioRotation angle (CRA), muscle strength, and tenderness threshold were evaluated. Results: Significant differences were shown in both groups in CVA, and tenderness threshold before and after exercise (p<0.05), and CRA, the left middle trapezius muscle strength, only in the experimental group (p<0.05). In the comparison of theamount of change between exercise groups, the group that received feedback on CVA, CRA and tenderness threshold showed a significant change than the group without feedback (p<0.05). Conclusions: As a result of this study, it can be seen that the therapist's real-time feedback is more effective in improving the forward head posture. This requires feedback from the therapist on posture correction during non-face-to-face exercise intervention.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.30 no.1
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• pp.61-73
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• 2024

Background: The purpose of this study is to investigate the effect of ankle strengthening and proprioceptor exercise, including gluteus-medius strengthening exercise, on ankle strength, dynamic and static balance, ankle function, and quality of life in 24 adults without ankle instability. Methods: After randomly classifying 12 people per group into the experimental group and the control group, Home-exercise rehabilitation program was conducted for a total of 2 weeks. The control group performed ankle strengthening and proprioceptor exercise 5 times a week for 15 minutes, and the experimental group was performed by adding 15 minutes of gluteus-medius strengthning exercise to the exercise performed by the control group. The SPSS 27.0 program was used for statistical analysis. Results: Both groups showed statistically significant differences in the plantar flexion muscle strength, Y-Balance test, side hop test, quality of life. But, only experimental group showed statistically significant differences dorsi-flexion muscle strength and hip abduction muscle strength. There was no statistical difference in comparison of difference values between groups. Conclusion: These exercises can provide useful home rehabilitation programs for sports populations seeking to prevent injury in sports.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.9 no.1
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• pp.45-51
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• 2015

This study was to verify effect on muscle strength of trunk and body composition for elderly according to spinal stability exercise with three dimension. We recruited forty elderly participants(twenties as training group, the other twenties as control group) over sixty five aged. The participant performed muscle strength estimation to exercise of eight direction using spinal stability training system. Also, we estimated body composition in participants using inbody 720. Trining group performed direction exercise(F, FOR, R, BOR, B, BOL, L, FOL) and multiple exercise with band exercise, strengthening gym and walking during thirty minute. But control group only performed multiple exercise without direction exercise. All training progressed three days a week for eight weeks. The results showed that muscle strength of trunk in training group increased significantly from 79.9 point to 85.6 point with reducement of body weight, body fat and BMI. However, control group showed a few exercise effect with increasement of amount of muscles and reducement of body fat without muscle strength of trunk. These results means that spinal stability exercise could be helped to prevent obey and fall of elderly caused by muscle strengthening and improving body composition. This could be applied to develop rehabilitation program efficiently based these data.

• Journal of the Korean Society of Physical Medicine
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• v.8 no.3
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• pp.295-302
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• 2013

PURPOSE: The purpose of this study was to investigate the effect of short-term lumbar stabilization exercise to patients suffering from chronic low back pain(CLBP) on the strength of their lumbar flexor and extensor and the postural balance of them and to suggest effective treatment duration for them. METHODS: Study subjects were 20 patients with CLBP who's been reported the pain for more than 12 weeks. For these subjects, muscle strength of both extensor and flexor of lumbar and the balancing ability were measured before and after the intervention. Lumbar stabilization exercise was composed of matt, ball and sling exercise. The intervention was applied for total 12 sessions for 4 weeks (3 times a week) and each session was for 40 minutes. RESULT: For muscle strength of both extensor and flexor of lumbar, there was significant differences after the application of lumbar stabilization exercise(p<.05). For balancing ability, stabilization shows significant differences in all of the positions except PC(eyes closed on pillows)(p<.05). Distribution of weight shows no significant differences but it was generally distributed within normal range after the exercise and Fall index shows significant differences between before and after the exercise(p<.05). CONCLUSION: These results could have positive effect on deciding different periods of therapeutic intervention.

• The Journal of Korean Physical Therapy
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• v.24 no.2
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• pp.90-97
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• 2012

Purpose: The purpose of this study was to assess the effects of virtual reality-based continuous slow exercise on muscle strength and dynamic balance capacity, in older adults over 65 years of age. Methods: Twenty-six volunteers were randomly divided into two groups; a Virtual Reality (VR) exercise-group ($67.8{\pm}4.1$ yrs) and a Control group ($65.5{\pm}5.2$ yrs). The VR group participated in eight weeks of virtual reality exercise, utilizing modified Tai-Chi provided by a motion capture system, and the Control group had no intervention. The hip muscle strength and dynamic balance of the members of both the VR group and the Control group were measured at pre- and post-intervention, using a multimodal dynamometer, and backward stepping test, respectively. Results: 1. After the 8-week VR-based exercise, the VR group showed significant improvement of hip strength, compared to the control group: hip extension (p=0.00), flexion (p=0.00), abduction (p=0.00), and adduction (p=0.00). 2. After the 8-week VR-based exercise, the VR group showed significant improvement of dynamic balance capacity as ground reaction force, compared to the control group. Eyes opened backward stepping test: Fx (+) (p=0.00), Fy (-) (p=0.02), Ver (+) (p=0.02) direction. Eyes closed backward stepping test: Fx (+) (p=0.04), Fy (-) (p=0.04), Ver (+) (p=0.03) direction. Conclusion: The VR group showed improvement of their hip muscle strength, and dynamic balance capacity. Therefore VR-based continuous slow exercise would contribute to reducing the risk of falls in the elderly.

• Journal of the Korean Society of Physical Medicine
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• v.13 no.2
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• pp.89-95
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• 2018

PURPOSE: We aimed to study the effect of head-lift exercise on the neck strength and swallowing function in patients with stroke. METHODS: Our study included 20 patients with stroke hemiparesis. All patients were randomly allocated to either the head-lift exercise or the conventional swallowing therapy group, and each group included 10 patients. All patients underwent the exercise over a mean period of 30 min daily for 6 weeks. Neck strength and swallowing function were assessed prior to and 6 weeks following the training period. We used a paired t-test to compare the within-group change before and after the intervention. We used an independent t-test to compare the between-group difference. The statistical significance level was set at ${\alpha}=.05$ for all variables. RESULTS: The head-lift exercise group showed a significant within-group change in terms of the neck strength and swallowing function (p<.05). The conventional swallowing therapy group also showed a statistically significant change (p<.05). A statistically significant difference was observed between the head-lift exercise and the conventional swallowing therapy group with regard to the change in both, the neck strength and swallowing function after application of the intervention (p<.05). CONCLUSION: This study provides valuable information for future studies in this field. Further studies involving a wider range of patients and a longer experiment span are required to strengthen the results of our study.

• Journal of The Korean Society of Integrative Medicine
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• v.10 no.2
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• pp.115-123
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• 2022

Purpose : The hamstring is a group of three muscles, biceps femoris, semitendinosus, and semimembranosus, placed behind the thigh. The hamstring is one of the most commonly injured muscles and usually occurs during high-speed, high-intensity exercise. The purpose of this study was to investigate the effect of static stretching and eccentric exercise of hamstrings on flexibility, strength, and functional performance. Methods : This study was conducted on 28 healthy adults. Subjects were divided into a static stretching group (n=15) and an eccentric exercise group (n=13). Subjects measured hamstring flexibility (active knee extension test), hamstring strength (concentric and eccentric peak torque), and functional performance (triple hop for distance and modified 20 m sprint). The intervention was conducted three times a week for six weeks. To compare the difference between values before and after the intervention, paired t-test was used, and an independent t-test was used to compare between groups. Results : In both groups, the active knee extension test, concentric peak torque, triple hop test, and 20 m sprint significantly increased after the intervention compared to before the intervention (p<.05). However, no significant difference was found in eccentric peak torque after intervention in both groups (p>.05). No significant difference was found between the two groups in the effect on the variables (p>.05). Conclusion : Both interventions were found to be effective for flexibility, concentric strength, and functional performance. Eccentric exercise and static stretching are recommended to improve the flexibility and functional performance of the hamstring. This study's results will be considered essential data on the effectiveness of static stretching and eccentric exercise.

• The Journal of Korean Physical Therapy
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• v.20 no.1
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• pp.11-16
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• 2008

Purpose: This study was undertaken to compare the signal characteristics of surface electromyography (EMG) between progressive resistive increase exercise (PRIE) and progressive resistive decrease exercise (PRDE). Methods: Forty healthy male subjects were randomly assigned to either the PRIE group or the PRDE group. Subjects participated in the PRIE and PRDE methods, with 10 RM for each subject. EMG activity was recorded from the rectus femoris muscle. Outcome data were collected for both groups pre-exercise, immediately post-exercise, then at 5 and 10 minutes post-exercise. Repeated measures 2-way ANOVA was used to determine the statistical difference of the root mean square (RMS) in EMG activity. Results: We showed that RMS values, when compared with pre-exercise, were decreased immediately after exercise and were increased at 5 and 10 minutes after exercise (p<0.05). The RMS values were not significantly different between the two groups (p>0.05). Conclusion: These results can indicate that both the PRIE and PRDE protocols will be improve strength with equivalent efficacy. Further studies are needed to address exercise duration, frequency of exercise sessions, and rest times than the PRIE and PRDE protocols with regard to the changes in strength improvement without a large amount of muscle fatigue.

• Korean Journal of Applied Biomechanics
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• v.22 no.2
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• pp.201-208
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• 2012

The purpose of this study was to investigate the effect of leg extension exercises performed on outdoor resistance exercise machines on knee extension muscle strength and quadriceps muscle group cross sectional area (CSA) in elderly women. Two groups were recruited for this study, including an exercise group (EG: n=13, $71.38{\pm}2.79$ yrs) and a control group (CG: n=5, $73.4{\pm}5.94$), In all subjects, maximum isometric and isokinetic muscle strength of knee flexion and extension were measured using an isokinetic dynamometer (Cybex(R) Humac Norm Testing & Rehabilitation System, USA). Quadriceps muscle group CSA were measured using MRI (Philps, Intera 1.5 T, NE Netherlands). The results of this study showed that post-intervention isometric knee extension peak torque value were higher than pre-intervention measures in the EG. However, the EG did not show improvement in quadriceps muscle group CSA, Also, no differences in the shift of optimal knee joint angle were observed between pre and post-intervention exercise. Outdoor leg extension exercise showed small increases in muscle strength in comparison to other resistance training exercises. The results of this study suggest that because outdoor leg extension exercise machines lack a progressive loading mechanism, significant increases in muscle strength may not be obtained.