• The Journal of Korean Physical Therapy
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• v.13 no.3
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• pp.603-611
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• 2001

This study was performed. using EGF, to observated the effect of GaAIAs laser on wound model induced designedly in lumbar region. The results of this study were as following: 1. In expression of EGF which used marker of wound healing, laser irradiating group made EGF to more induce significantly than laser non-irradiating group at 3 days. 2. EGF immunoreactivity in epidermis were increased markedly 3 days after wound, and increased gradually from 1 day to 2 days in wound which is laser irradiation. Therefore, EGF immunoreactivity which increased after wound with GaAIAs laser irradiation indicate that GaAIAs laser have wound healing effect. This study also can become a part of scientific evidence on electrotherapy through measuring quantitively effects of GaAIAs laser in wound

• Physical Therapy Korea
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• v.14 no.2
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• pp.76-84
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• 2007

This study was designed to determine the efficacy of ultrasound and laser therapy for sub-acute lower back pain. Twenty-seven patients with sub-acute low back pain were recruited, who were randomly assigned to three groups: Ultrasound group (actual ultrasound, 1.1 MHz, $1.0W/cm^2$, duty cycle 100%, 10 min/session, n=9), laser group (actual laser, 904 nm, 155 ns, 13.5 W, 12 mW, 90 sec/point, n=9), and control group (placebo ultrasound or placebo laser, n=9). All of treatments including placebo procedures were applied to patients over a period of 2 weeks, five times a week. Visual Analogue Scale (VAS), Modified Schober's Test (MST), and Modified Oswestry Disability Questionnaire (MODQ) were used by the clinical and functional evaluations before and after intervention. At post-hoc, significant differences were observed in all groups with respect to VAS, MST (p<.05), except MODQ. VAS and MST score were more significantly improved in the ultrasound group than the laser and control group (p<.0167). However, no significant difference was present between the laser group and the control group. Therefore, this study revealed that ultrasound therapy was effective in pain relief and improvement of lumbar mobility in patients with sub-acute lower back pain. However, laser therapy did not show the effects for sub-acute lower back pain.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2007.06a
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• pp.496-496
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• 2007

Low level laser therapy has various therapy effects. This paper performed the basic study for fabricating the low level laser therapy apparatus, and one of the goals of this paper was to make this apparatus used handily. The apparatus has been fabricated using the laser diode and microprocessor unit. The apparatus used a 7850m Laser diode for blood stream improvement and was designed for a pulse width modulation type to increase stimulation effects. In result, we could get the light power of 785nm wavelength.

• The Journal of Korean Physical Therapy
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• v.3 no.1
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• pp.211-220
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• 1991

The relief of pain by laser therapy in useful in the treatment of ulcers burn, tenosynovitis, tendinitis, bursitis, neuritis, rheumatism, chilblains, herpes, zoster. The degenerative cells probiferate to replace by the active vigorous cells by laser rays and suppressed the growth of cell in pathological lesion or condition laser rays promote healing by stimulating growth of celt or tissue The purpose of this study was to introduce about the principles of therapeutic laser ray, characteristics, indication, contraindication, technique, therapeutic effect or clinical effect throughout refference books. The author believe that therapeutic laser rays will contribute grently toward over coming the difficulties of physical therapy.

• Physical Therapy Rehabilitation Science
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• v.3 no.1
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• pp.1-6
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• 2014

Objective: Low level laser treatment (LLLT) is widely used in physical therapy practice. It is combined with physical therapy or LLLT alone. The purpose of this study is to evaluate the effectiveness of LLLT on patients' perception of general wrist pain. Design: Longitudinal study. Methods: Forty-eight subjects with wrist pain who were in the age range of 18-70 years old were examined. The subjects were asked, via an interview and a visual analog scale, to grade their wrist pain. They were asked to rotate their wrists through full range of motion and the angle at which any pain occurred was assessed. Each subject was then exposed to one of the following: 1) treatment with an infrared laser with the power turned off (placebo), 2) treatment with an infrared therapeutic laser, 3) treatment with a red therapeutic laser, 4) treatment with an ultraviolet laser, 5) treatment with a blue laser, 6) treatment with a Mickey Mouse flashlight. The duration of the treatment was 3 sessions in 3 days. Results: The results of the experiments showed that while pain was reduced both immediately after and the next day after laser therapy (p<0.05), there was no significant difference between the laser groups and the placebo group. However, the Mickey Mouse flashlight treatment groups had a greater range of motion than the laser groups (p<0.05). Conclusions: While pain was reduced in all laser groups, it was probably a placebo effect. The Mickey Mouse flashlight group probably received benefit from the heat of the flashlight.

• The Journal of Korean Physical Therapy
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• v.26 no.3
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• pp.175-181
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• 2014

Purpose: The purpose of this study is to investigate the effects of interference current therapy and laser therapy on functional recovery after total knee arthroplasty by measuring the Berg balance scale and range of motion. Methods: Subjects were 30 patients who were admitted to G Hospital after total knee arthroplasty. They were randomly assigned to experimental group I in which interference current therapy was applied (n=10), experimental group II in which laser therapy was applied (n=10), or the control group (n=10). The Berg balance scale and range of motion of the subjects were measured before, after 2 weeks, and after 4 weeks of therapy. Results: There was a statistically significant change (p<0.05) in the Berg balance scale and range of motion before and after therapy intervention among the laser therapy group and the interference current therapy group. There was also a significant change between the groups in the Berg balance scale and range of motion. Tukey's post hoc comparison showed a statistically significant difference between the control group and experimental group I and between the control group and experimental group II (p<0.05). Conclusion: The application of interference current therapy and laser therapy resulted in a significant change in both the Berg balance scale and range of motion among patients with total knee arthroplasty. The findings of this study can be used as preliminary clinical data in evaluating functional recovery in patients with total knee arthroplasty in a post-clinic setting.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.27 no.3
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• pp.205-212
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• 2014

Purpose: This study aims to prove effects of an oriental medical complex therapy on vitiligo patients who have experienced the Eximer laser therapy. Method: The study conducted its investigation targeting these four patients who have not been observed with any satisfactory reaction to the Eximer laser therapy. The study analyzed the findings through the comparison on the pictures before and after the therapy. Result: After comparing the pictures, the study confirmed positive changes in the conditions of the patients. The oriental medical complex therapy turned out to be effective enough to treat the patients who have gone through the Eximer laser therapy before. Conclusion: Such result leads the study to a conclusion that the oriental medical complex therapy can be an effective way to treat these patients who do not have a satisfactory reaction to the Eximer laser therapy. In addition, the author of the study suggests that more clinical trials should be conducted.

• Journal of Physiology & Pathology in Korean Medicine
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• v.25 no.5
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• pp.870-875
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• 2011

Arthritis of the knee is the most common type of joint inflammatory disorder and it is associated with pain and inflammation of the joint capsule. The aim of present study was to investigate the endogenous effect of low intensity laser acupuncture on collagen-induced arthritis in rats. Forty Sprague-Dawley rats were randomly divided into normal group, arthritis group, low laser group with 10 rats in each group. Arthritis in rats was induced by subcutaneous injection of type II collagen combined with complete Freund's adjuvant. Here we investigated the effects of low intensity laser therapy in experimentally induced rat knee arthritis. To evaluate preventive and therapeutic effects of low intensity laser acupuncture on collagen-induced arthritis rats. In collagen induced arthritic rats, there was significant increase in rat paw volume and decrease in body weight increment, whereas low intensity laser therapy groups, showed significant reduction in paw volume and normal gain in body weight. The altered biochemical parameters(blood urea, serum creatinine, total proteins and acute phase proteins) in the arthritic rats were significantly brought back to near normal by the low intensity laser therapy. Therefore, low intensity laser acupuncture may be a useful treatment in the prevention and treatment of collagen-induced arthritis.

• Journal of Physiology & Pathology in Korean Medicine
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• v.18 no.3
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• pp.939-941
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• 2004

Phototherapy have perpetual history, we can see an instance of it in Yellow Emperor's Conon of Medicine(黃帝內經) and Laser therapy is a field of Phototherapy being used frequently in the latest time. We treated patients with telangiectasia by laser therapy and experimented it's efficacy and studied the means of clinical application in Korean medicine. We report the capabilities of application of laser therapy, based on Korean medical theories by using resemblance between laser therapy with kyung-rak(經絡) control technique in the line that connects with the past.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.17 no.1
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• pp.172-176
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• 2004

Phototherapy has perpetual history. we can see an instance of it in Yellow Emperor's Canon of Medicine(黃帝內徑) and Laser therapy is a field of Phototherapy being used frequently in the latest time. We treated patients with hyperpigmentation by laser therapy and experimented it's efficacy and studied the means of clinical application in Korean medicine. We report the capabilities of application of laser therapy, based on the Korean medical theories by using resemblance between laser therapy with kyung-rak(經絡) control technique in the line that connects with the past.