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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Physical Therapy Korea
Journal Basic Information
Journal DOI :
Korean Research Society of Physical Therapy
Editor in Chief :
Volume & Issues
Volume 4, Issue 3 - Nov 1997
Volume 4, Issue 2 - Sep 1997
Volume 4, Issue 1 - May 1997
Selecting the target year
EMG and Muscle Force of Intermittent Submaximal Constructions between Weight Lifters and Non-Weight Lifters
Sung, Paul S. ;
Physical Therapy Korea, volume 4, issue 2, 1997, Pages 1~9
Skeletal muscle fatigue is often associated with diminished athletic performance and inability to maintain an expected force output as a function of time. The purpose of this study was to compare the effect of duration of exercise on skeletal muscle fatigue between Weight Lifters(WL) and Non-Weight Lifters(NWL). There were twelve normal healthy adult volunteers, ranging in age from 18 to 35 years. The group consisted of six NWL and six WL. Randomized cross-over design was set up and work-rest cycle was 8 minutes work and 1 minute rest based on 15% MVC. Muscle fatigue was measured by the amount of force produced by the wrist flexor muscle and EMG amplitude over time. Repeated measures ANOVAs(
) were used to determine two types of subjects(WL, NWL) during four different duration of exercises(16, 32, 48, 64 minutes). The force decreased over time in NWL and WL, but there was no significant difference(F=2.83, p>0.05). However, the EMG amplitude increased in WL(0.8200) and NWL(0.6348). The WL exhibited an increase in EMG at the end of the period, especially at 48 minutes of exercises than did the NWL(F=9.58, p<.05). This suggests the WL were able to adjust to prolonged effort with adaptations in neural effect over time, resulting in higher EMG amplitude. That is, WL may be able to learn to recruit more motor units with training. It is important to the degree of neuromuscular fatigue and the time needed for recovery may differ considerably between WL and NWL, there is a need to plan proper strength training or rehabilitation protocols to match with the requirements in different characteristics of groups.
Effects of the High-Heeled Shoes on the Sensory System and Balance in Women
Kim, Won-Ho ; Park, Eun-Young ;
Physical Therapy Korea, volume 4, issue 2, 1997, Pages 10~17
The purpose of this study were to compare light touch, two-point discrimination, position sense, and static balance ability and to examine the relationship of static balance ability and different senses in those who are wearing various heights of high-heeled shoes. Each 29 women was classified two different heights (below 3 cm, above 7 cm) by experience in wearing shoes. A t-test was used to determine the differences between low- and high-heeled shoe in light touch, two-point discrimination, position sense, and static balance ability. Pearson correlation was used to examine the relationship of static balance ability to these sensation. The results were as follows: 1) No significant differences in average light touch, position sense between two groups were found(p>0.05). But significant differences in average two-point discrimination, static balance ability were found(p<0.05). 2) Static balance ability was not significantly correlated with light touch, position sense, two-point discrimination(p>0.05). The results suggest that long time experience in wearing high-heeled shoe may be caused local sensory change and decreased static balance ability. Even though, static balance ability was not significantly affected but correlated with two-point discrimination, position sense, and light touch in order.
A Study of Risk Factors related to Back Pain in Bus Drivers
Park, So-Yon ;
Physical Therapy Korea, volume 4, issue 2, 1997, Pages 18~35
The purpose of this study were to determine causes of low back pain in bus drivers who usually work in prolonged sitting position and to find the relationship of back pain with general characteristics and work environmental characteristics, stress symptoms, to com맹re lordosis angle of habitual driving posture and resting posture in low back pain group and non-low back pain group, and to use this result as a basis for improvement of work environment and comprehensive rehabilitative management of low back pain. Ninety-eight bus drivers were selected from the membership of an urban transit union in Seoul. These informations were collected from May 1, 1997 to May 25, 1997 by means of structured questionnaires and X-ray findings. These data were analyzed by
test, t-test, logistic regression using SAS. The major results were as follows: 1. Of the respondents, 66.3% of bus drivers were found to be experiencing back pain. 2. Of the respondents of low back pain groups, 78.5% reported that major cause of low back pain was due to prolonged sitting. 3. The group with experiences of frequent or continuous vibration had more low back pain (p<0.05). There were no significant differences among other work environmental factors. 4. Average stress score was significantly higher in the group with low back pain than in the group without low back pain (p<0.05). 5. The results of the logistic regression analyses were statistically significant vibration from seat and stress score among the risk factors (p<0.05). 6. Averaged lordosis angle of habitual driving posture was
degrees in low back pain group,
degrees in non-low back pain and averaged lordosis angle of resting sitting posture was
degrees in low back pain,
degrees in non-low back pain group but the difference in mean lordosis angles of two groups was not statistically significant. The results of this study indicate that professional drivers developed chronicity of low back pain due to unfit seat, poor habitual posture and stress from vibration or other risk factors. Therefore, there is need to improve work environment, i.e. enough resting, to set a seat to support lumbar spine properly and to provide comprehensive rehabilitation program including early diagnosis, proper treatment and education for self help management.
Effects of Microcurrent Electrical Neuromuscular Stimulation of Auricular and Somatic Acupuncture Points on Experimental Pressure Threshold
Ko, Hyun-Chul ; Cho, Won-Ho ; Han, Seung-Soo ;
Physical Therapy Korea, volume 4, issue 2, 1997, Pages 36~50
The purpose of this study was to compare the effects of high intensity, high frequency microcurrent electrical neuromuscular stimulation(MENS) of auricular and somatic acupuncture points and low intensity, low frequency microcurrent electrical neuromuscular stimulation(MENS) of auricular and somatic acupuncture points on experimental pressure threshold at the elbow according to the time. Fifty healthy adults, aged 19 to 26 years, were assigned randomly to one of five groups: 1) the high intensity, high frequency somatic group(n=10) received MENS to somatic acupuncture points, 2) the high intensity, high frequency auricular group(n=10) received MENS to auricular acupuncture points, 3) the low intensity, low frequency somatic group(n=10) received MENS to somatic acupuncture points, 4) the low intensity, low frequency somatic group(n=10) receive MENS to somatic acupuncture points, and 5) the placebo group(n=10) received placebo treatment and served as controls. Pressure threshold was measured before, after, 5 minutes, 10 minutes and 15 minutes. Pressure threshold has increased significantly(p<.05) in the high intensity, high frequency auricular group following treatment after 5 minutes, with no statistically significant differences in pressure threshold change scores among five groups, Only the high intensity, high frequency auricular group demonstrated statistically significant change score in pressure threshold following treatment after, 5 minutes, 10 minutes and 15 minutes after compared to the placebo group. The results indicated that MENS applied to the high intensity, high frequency auricular group increases pressure threshold.
Effects of both Subject Age and Onset of Warts Influence for Curing in Ultrasound Treatment
Lee, Eun-Hwa ; Jung, Jae-Kyoung ; Hwang, Mi-Kyoung ;
Physical Therapy Korea, volume 4, issue 2, 1997, Pages 51~58
The object of this study were twofold, namely, to study on (1) effect of using ultrasound therapy for curing warts (2) any relation between a cure for warts and onset of warts, as well as subject age. Our subjects, composed of 22 people from age 12 to 49, were assigned to two groups, experimental group and control group. We experimented for 8 session on 12 people in the experimental group by using ultrasound therapy to observe any morphological change in the warts or disappearance of a pain. However, we did not cure warts in the other group, control group. The result of the study are as follows. (1) Ultrasound therapy has an effect on curing warts. (2) Neither condition, onset of warts or subject age, had no influence on a cure for warts.
Comparison between the Effect of Intermittent and Continuous Visual Feedback in Sway Balance Training with Normal Subjects
Park, Joon-Young ; Oh, Shin-Young ; Jang, Jin-Ho ;
Physical Therapy Korea, volume 4, issue 2, 1997, Pages 59~65
To improve the effect of balance training, visual feedback is usually used. During the training process there are some factors which decrease the effect. Neurophysiologically, the main negative factor is thought to be synaptic fatigue which decreases the sensitivity of synapses. The purpose of this study was to find a more effective balance training method. In this study, a total of 60 normal subjects-19~30 years old young males and females(M=30, F=30)-participated, and they were randomized as A, B, and C group, each group containing 20 subjects. First, all groups had a pre-test of sway balance. One minute later, A group was trained in sway balance by continuous visual feedback for 2 minutes, B group by intermittent visual feedback which had 4 sessions of 30 seconds each and a one minute rest break. C group was not trained at all. All groups had a post-test. Only B group had improved balance compared with C group by ANOVA. On the other hand, intermittent visual feedback was more effective than continuous visual feedback in sway balance training with normal subjects.
The Effects of Proprioceptive Neuromuscular Facilitation Techniques on the Quadriceps Femoris by Electromyographic Analysis
Sin, Eun-Sung ; Choi, So-Young ;
Physical Therapy Korea, volume 4, issue 2, 1997, Pages 66~76
The purpose of this study was to compare the integrated electromyographic activity ratios of vastus lateralis(VL); rectus femoris lateral portion (RFL); rectus femoris medial portion(RFM); and vastus medialis(VM) muscles of 30 healthy subjects under three proprioceptive neuromuscular facilitation(PNF) techniques. Each subject was randomly assigned to one of 3 PNF techniques groups : slow reversal(SR), slow reversal hold(SRH) and rhythmic stabilization (RS). Each person was positioned in supine with the right hip flexed to
and the knee fully extended and received a total of 6 sessions. Each technique was applied to the right lower extremity in two diagonal patterns while electrical activity was monitored from the ipsilateral muscles VL, RFL, RFM, and VM, respectively. Comparison of normalized mean EMG magnitudes from VL, VM showed that RS demonstrated significantly greater activity than that of SR or SRH and that RFL and RFM did not demonstrate any greater relative EMG activity with the three PNF techniques than did VL or VM.
Treatment and Management of Conversion Disorder
Oh, Duck-Won ;
Physical Therapy Korea, volume 4, issue 2, 1997, Pages 77~88
Conversion disorder is a psychologically produced alteration or loss of physical functioning suggestive of a physical disorder. Conversion symptoms are often superimposed on organic disease and can be overlooked. Psychological techniques are central to the management include the following: avoiding confrontation with the patients; avoiding reinforcement or trivializing the symptoms; reviewing results of tests and exams and creating an expectation of recovery; educating the patient before a treatment is begun; evaluating the patient's emotional adjustment and considering it at a treatment; using caution in labeling the condition; considering referral for psychotherapy; establishing particularly a treatment plan and making a definite treatment program; adjusting patient' s environment; letting participate a family at appropriate time; developing a reinforcement program for a treatment of chronic symptoms; developing a home program for outpatients. Use behavior therapy reinforcement may be helpful with more chronic or resistant symptoms, especially when there is a history of vague or excessive somatic complaints or significant secondary gain.
Difference of Functional Outcome Measurements between Total Knee Arthroplasty and Knee Amputation
Sung, Paul S. ;
Physical Therapy Korea, volume 4, issue 2, 1997, Pages 89~99