• Journal of Korean Physical Therapy Science
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• v.3 no.3
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• pp.51-56
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• 1996

Isokinetic test of muscle strength was performed on 20 patients operated laminectomy & discectomy. Peak torque of ankle dorsi flexors & plantar flexors at the angular velocity of $30^{\circ}$/sec and average power and total work of ankle dorsi flexors & plantar flexors at the angular velocity $90^{\circ}$/sec were measured and analyzed. The result were as follows: 1. Peak torque of non - dominant dorsi flexors at $30^{\circ}$/sec showed no significant difference statistically, but dominant dorsi flexors at $30^{\circ}$/sec showed significant difference statistically(p<0.05). 2. Peak torque of dominant & non - dominant plantar flexors at $30^{\circ}$/sec showed significant difference statistically(p<0.05). 3. Average power of dominant & non - dominant dorsi flexors at $90^{\circ}$/sec showed no significant difference statistically. 4. Average power of dominant & non - dominant plantar flexors at $90^{\circ}$/sec showed significant difference statistically (p<0.05). 5. Total work of dominant & non - dominant dorsi flexors at $90^{\circ}$/sec showed no significant difference statistically. 6. Total work of dominant & non - dominant plantar flexors at $90^{\circ}$/sec showed significant difference statistically(p<0.05).

• The Journal of Korean Physical Therapy
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• v.27 no.3
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• pp.129-134
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• 2015

Purpose: The purpose of this study was to determine the influence of WBV exercise on CMJ and quadriceps muscle activation according to different frequency of vibration in soccer player and also to find effective frequency for leading appropriate treatment reaction. Methods: Thirty three subjects were randomly divided into three groups: the three groups are WBV group using 20 Hz frequency, WBV group using 30 Hz frequency and squat exercise group according to training method. The exercise program was conducted for six weeks. Subjects were measured on CMJ and quadriceps muscle activation. Results: Significant difference in CMJ was observed in the group I, II compared with the group III (p<0.05). Results of post-hoc, showed a significant difference in CMJ in on group I, II compared with the group III, but no a statistically significant difference between group I and II. Significant difference in quadriceps muscle activation was observed in the group I, II compared with the group III (p<0.05, p<0.01). Results of post-hoc, significant difference in quadriceps muscle activation in on group I, II compared with the group III and significant difference between group I and group II. Conclusion: This research intervened WBV for soccer players and compared the differences of CMJ and quadriceps muscle activation; as a result of the effective frequency for improving performance, there is a significant difference in CMJ and quadriceps muscle activation of WBV group with comparison of control group; and it was proved that WBV is effective using 30 Hz frequency for improving quadriceps muscle activation.

• Journal of Korean Physical Therapy Science
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• v.9 no.3
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• pp.59-65
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• 2002

The purpose of this study was to investigate the effect of exercise program to oldwomen's flexibility. The result of this study were the following : 1. The elderly group showed significant difference(p<.001) on effect of flexibility of upper between pre and post after regular stretch exercise. 2. The elderly group showed significant difference(p<.001) on effect of flexibility of lower between pre and post after regular stretch exercise. 3. The elderly group showed significant difference(p<.001) on effect of flexibility of trunk between pre and post after regular stretch exercise. As a result of this study, the effect of exercise training program had improved flexibility of the elderly.

• The Journal of Korean Physical Therapy
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• v.11 no.2
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• pp.21-28
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• 1999

The purpose of this study were to describe the performance 67 kindergartener who aged from 4 to 7 years on the Pediatric Clinical Test of Sensory Interaction for Balance(P-CTSIB) and to determine difference with foot position and age. All Subjects were performance with different foot position that were feet-together, heel-toes. the starting position was that subject placed their hands on the hips, The results of this study were as follows 1. There were significiant difference in all instances by age whoa subjects were foot together(p<0.05). 2. There were singificiant difference in all instances by age excepts condition V awhen subjects were heel toes(p<0.05). 3. Duration of balance performance, of 4-year-olds were shortest and duration of balance performance of 7-year-olds were longest.

• Journal of Korean Physical Therapy Science
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• v.1 no.2
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• pp.215-222
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• 1994

The aim of this study was to determine the normative strength value for cervical flexors, extensors and right lateral flexors, left lateral flexors to provide a guideline for rehabilitation of cervical radiculopathy patients. The isometric evaluation of cervical flexors, extensors and lateral flexors by using the Hand-held dynamometer was performed on 50 males and 50 females. The result were as follows. The average cervical muscle strength were 5.7 kg in flexor. 10.5 kg in extensors, and 6.6 kg in right lateral flexor, 6.5 kg in left lateral flexor. There was statistically significant difference between the cervical flexors and extensors(p<0.01) but no significant difference between right lateral flexor and left lateral flexor. There was statistically significant difference between male and female(p<0.01). When one of cervical muscle was strong, also the others did in subjects(p<0.01) and the body weight was significantly releated to the cervical muscle strength(p<0.01).

• The Journal of Korean Physical Therapy
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• v.14 no.2
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• pp.133-144
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• 2002

This study aims at examining the effects of strengthening leg muscular strength on increasing elderly's muscular strength, walking ability and balance according to their experience of injury from a fall. It conducts muscular strength exercise for 4 weeks with 19 healthy old people over 65years and as a result of measuring their conditions for 6 weeks, it obtains the following conclusions. 1. Two groups showed a significant difference in their muscular strength, walking ability and balance according to the period(p<0.05). 2. Muscular strength and balance between the two groups showed a significant difference(p<0.05), but there was no significant difference in their walking ability(pgt;0.05). 3. Therefore, the exercise of strengthening leg muscular strength in this study has a significant effect on old people's walking ability and balance.

• Journal of the Korean Society of Physical Medicine
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• v.4 no.2
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• pp.101-106
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• 2009

Purpose：The purpose of this study was to find the effect of intensive therapy on gross motor function measure(GMFM) score in cerebral palsy. Methods：Twenty eight cerebral palsy children were recruited in this study. Gross motor Function Measure(GMFM) score and Gross motor Function Classification System(GMFCS) were used to evaluate as functional change and functional level. Intensive therapy period for cerebral palsy children was 3, 4, and 5 weeks. Statistical analysis was used paired T test and one way ANOVA to know change between pre and post therapy was used. Results：GMFM Score of pre- and post- intensive therapy showed the statistically significant difference. Intensive therapy period indicated the statistically significant difference in GMFM score. GMFCS level did not reveal statistically significant difference in GMFM score. Conclusion：Intensive therapy was effective on gross motor function measure(GMFM) score in cerebral palsy.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.13 no.2
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• pp.55-68
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• 2007

Object: to evaluate the effects of two different treatments-joint mobilization and therapeutic exercise on difference for length of lower limbs. Method: The subjects were participated twenty six who has difference for length of lower limbs more 10mm. All subjects randomly assigned to Joint mobilization group(n=13) and therapeutic exercise group. Joint mobilization group received joint mobilization for 2 minutes, Therapeutic exercise group received for 15 minutes per day and 3 times a week during 4 week period. Tape measure method was used to measure the difference for length of lower limbs. Biodex was used to measure the muscle power of lower limbs(Knee flexion, extension). Finger to floor test was used to measure the mobility of spinal column. All measurement of each subjects were measured at pre-experiment, after 2weeks and post-experiment. Result: The result of this study were summarized as follows : 1. Both treatment decreased difference for length of lower limbs while joint mobilization more decreased difference for length of lower limbs than therapeutic exercise. 2. Both treatment increased mobility of spinal column while joint mobilization more increased mobility of spinal column than therapeutic exercise. 3. Joint mobilization increased muscle power while therapeutic exercise decreased muscle power. Conclusion: in a group-wise comparison joint mobilization is more effective than therapeutic exercise.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.18 no.2
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• pp.95-102
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• 2012

Background: The purpose of this study was to find out influence of using portable mobile devices in human body. Method: The subjects were consisted of the normal persons (19 males and 20 females). These subjects were consisted of three groups according to test time. The A group (12 persons - 6 males, 6 females) tests 5 minutes, the B group (14 persons - 7 males, 7 females) tests 10 minutes, and the C group (13 persons - 6 males, 7 females) tests 15 minutes. Before test, sight, quickness and balance were measured, after test revision, quickness, balance were measured and checked pain scale. Results: The results were as follows. 1. Sight, quickness and balance were decreased and pains were increased after using portable mobile devices than before using these. 2. According to duration of using the portable mobile devices, sight, quickness and balance was not a statistically significant difference, the entire upper body pain was a statistically significant difference. When viewed as part of the pain, shoulder, lower back, and wrist pain were a statistically significant difference, but the neck and elbow were not a statistically significant difference. 3. The influence of vision according to distance of using Portable mobile devices was no statistically significant difference. In addition, less than 20cm distance using equipment group ("Ga") and the group ("Na") which exceeded 20cm in between the sight were not statistically significant difference, Influence of pain according to distance of using Portable mobile devices we-re no statistically significant differences. Conclusion: Using portable mobile devices affect human body on the elements of the biomechanics.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.24 no.1
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• pp.67-75
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• 2018

Background: The purpose of this study was to investigate the effect of pressure distribution on the both foots with gluteus medius muscle intensive strengthening exercise in 4week. Methods: The purpose of this study was to investigate the effect of gluteus medius muscles strengthening exercise on the pressure distribution of the foot in 20 healthy adults. Four gluteus medius muscles strengthening exercise programs were conducted three times a week for four weeks. The pressure distribution changed of the right and left foot parts of the experimental group and the control group were measured and analyzed. Results: There was a significant difference in F1, F2, M1, M2, and H1 among the pressure distribution of the right foot of the experimental group (p<.05). There was a significant difference in F1, M1, M2, H1 and H2 among the pressure distributions of the left foot of the experimental group (p<.05). There was a significant difference in H1 among the pressure distribution of the right foot of the control group (p<.05). There was no significant difference in the pressure distribution of the left foot region of the control group (p>.05). There was a significant difference in H1 among the pressure distribution of the right foot between the group (p<.05). There was a significant difference in M2, H1 among the pressure distribution of the left foot between the group (p<.05). Conclusions: In the healthy adults, it was confirmed that the application of the gluteus medius muscles strengthening exercise had an effect on the weight shift during the walking due to the overall foot balance and the pressure distribution change of the foot part.