• The Journal of Korean Obstetrics and Gynecology
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• v.31 no.2
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• pp.80-94
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• 2018

Objectives: The purpose of this study was to investigate the effect of the massage program stimulating the acupuncture points and meridians on the improvement of sleep quality. Methods: 16 subjects suffering from sleep disorders were recruited and the massage program was conducted 3 times a week for a month. VAS (Visual Analog Scale) and KPSQI (Korean Pittsburgh Sleep Quality Index) were collected through questionnaires, and salivary cortisol concentration test and HRV (Heart Rate Variability) were also used to evaluate the effect. The collected data were analyzed by independent statisticians. Results: VAS and KPSQI values decreased significantly after 4 weeks of massage chair application. There was no significant difference in salivary cortisol concentration and HRV test results. In the group with normal HRV test results and salivary cortisol concentration, the change of VAS and KPSQI values was not significant, while the group with abnormal range showed a statistically significant decrease. Conclusions: The massage chair program stimulating meridians according to Korean medicine theory was effective in improving sleep quality. Massage of acupoints and meridians through a massage chair is expected to be useful as an adjunctive therapy in addition to standard Korean medicine therapy.

• Journal of Digital Convergence
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• v.12 no.9
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• pp.209-217
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• 2014

As an idea of healing or fatigue recovery, a desire for massage therapy has increased for modern people who complain of pain such as knotted muscles or shoulder discomfort due to fatigue accumulation and stress. To resolve this, although a massage chair has been developed, it does not provide the most efficient massage as it is not suitable for Korean body types. In this paper, this research analyzed massage, assembly, massage intensity, Korean body types and functions of the massage for maximized efficiency to design critical functions. Also, we implemented the action control and algorithm of the massage chair for localization.

• Journal of the Korea Convergence Society
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• v.6 no.3
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• pp.29-36
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• 2015

In order to have market competitiveness in the area of massage chair in domestic, it is necessary to establish a tactical promotion plan in terms of developing new technology and rethinking competitiveness. So, this research addresses four things, The first is to report an analysis that is for external environment changes and competitors the current situation through surveying the market trends of massage chair. The second is current technology of massage chair through surveying current technical trends of massage chair. In the basis of the surveying, the third is to establish alternative future technology for the chair. Finally, the last is to establish a counter-plan by analysing internal status and competitive power of each enterprise. On the basis of four things above, the future promote strategy and subject are proposed in this paper by producing the four strategic subjects.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.42 no.4
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• pp.1-7
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• 2019

The customer of massage chair is expanding day by day from middle age to all ages. In 2018, the market size was 700 billion KRW, an increase of 30 times over 10 years. However, most related SMEs suffer from excessive competition by the market monopoly of some major companies. In this situation, in order for a related company to survive, it is necessary to steadily research and develop new products. Founded in 2009, company L produces massage chairs for health and relaxation of customers. L's products use a sound wave vibration module that is favorable for human body, unlike other products that use vibration motor type. However, frequent breakdowns of massage chair due to the vulnerability of plate (leaf) springs, which play an important role in sound wave vibration modules, made sap its competitiveness. In this paper, we propose a method to design desirable plate spring structure by sequentially experimenting with five different plate springs. The results of this study are expected to contribute to improve the quality of plate spring and the reliability of sound wave vibration module. In the future, it is necessary to find a way to use it in the development of foot massage or scalp management device as well as continuous research to find optimal plate spring structure through various analysis.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.481-482
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• 2008

• Korean Journal of Acupuncture
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• v.35 no.2
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• pp.82-90
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• 2018

Objectives : The purpose of this study is to investigate the effect of acupoint and meridian muscle massage given by automatic massage chair. Methods : We recruited 30 patients with back pain who met inclusion criteria. Two weeks were given as a waiting period, and the massage intervention was applied 12 times for 4 weeks. The programmed automatic massage chair was used to provide effective stimulus on acupoints and meridians for 20 minutes. We used Visual analog scale(VAS) and Korean Oswestry Disability Index(KODI) to quantify pain and function. We also recorded patients' all of vital signs and abnormal reactions during the trial to asses to assess safety. Results : Two participants dropped out due to personal reasons and 28 participants completed the clinical trial. We found that the degree of back pain (VAS, KODI) decreased significantly after the trial. As a result, VAS score decreased from $6.44{\pm}0.85$(Visit 2) to $4.59{\pm}1.52$ (Visit 14)(p<0.001), and KODI score was also reduced from $14.79{\pm}5.13$(Visit 14) to $9.04{\pm}4.52$ (Visit 2) (p<0.001). Also, we did not find any adverse effects in this study. Conclusions : We found that the acupoint and meridian muscle massage can effectively decrease back pain. This proves that the massage program designed by Korean medicine can be a good option to patients with back pain. However, further study with controlled design is still needed to verify its effectiveness.

• Korean Architects
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• s.603
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• pp.100-101
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• 2019

• The Journal of the Korea Contents Association
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• v.10 no.6
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• pp.364-372
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• 2010

The aim of this study was to evaluate effects of EEG patterns induced by three types ((1) resting mode(control group), (2) light massage mode, (3) strong massage mode in the electrical chair-massager for 15 minutes) in a sample of 16 healthy adults. Changes in anxiety and stress were assessed, and electroencephalogram was recorded. Anxiety scores(STAI: State Anxiety Inventory, VAS: Visual Analog Scale) decreased in all groups. For anxiety scores, the strong massage group showed the greatest decrease in stress. All groups also showed an increase in delta and theta activity, but only strong massage group showed a signigicant difference. All groups showed a decrease in alpha activity. Also, EEG changes in two groups except a control group showed a decrease in beta activity.

• Proceedings of the Safety Management and Science Conference
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• 2003.05a
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• pp.143-147
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• 2003

This study is to develop a device of bath-seat with massage which is attached to bath-seat and is able to sustain massage on perineal region and anus effectively. And also develop new programmed driving-seat that is able to protect drowsiness. This seat is operated easily by user controlling time period (eg. 30 minutes or 60 minutes) of vibration. During the vibration, user can make a choice of making n sound which is proved as a better effects for concentration and comfort.

• Korean Journal of Adult Nursing
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• v.21 no.5
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• pp.458-467
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• 2009

Purpose: This study was object to the effects of a resistance exercise combined with relaxation therapy on blood pressure, frequency of exercise and physical fitness in elderly women. Methods: Seventy three elderly women participated in an exercise program for 12 months. The exercise program consisted of stretching, massage and resistance training using thera-bands twice a week and 50 minutes in every sessions each week. Repeated measures ANOVA were performed using SAS. Results: After the exercise program there was a significant difference in systolic blood pressure, frequency of exercise, body fat, sitting to standing, walking 2 minutes, sitting on a chair and reaching, and standing on one leg with eyes opened. After 6 months, there was a significant decrease in systolic blood pressure and significant increase in frequency of exercise, body fat, sitting to standing and standing on one leg with eyes opened. In 12 months, there was a significant increase in body fat, 2 minutes walking, and sitting in a chair and reaching. Conclusion: Resistance exercise combined with muscle relaxation therapy would have a positive effect on elderly women. We found that it was helpful for the elderly women in terms of physical fitness.