• Journal of the Korea Convergence Society
• /
• v.12 no.6
• /
• pp.27-32
• /
• 2021

The purpose of this study was to compare the immediate effect of EMS (electrical muscle stimulation) on rectus femoris thickness during resisted knee extension exercise in healthy adults. This experiment was conducted on 20 healthy adults as pretest-posttest nonequivalent one group design. The subject's 1RM of both knee extension was measured indirectly using an elastic band, and the knee extension resistance exercise using an elastic band was applied to high intensity (80% of 1RM) on the right leg and low intensity (50% of 1RM with EMS) on the left leg, which were applied with 5 sets. Muscle measurements were performed on the rectus femoris (1/2 site, 1/4 site) using ultrasonography before and after exercise. There was a statistically significant difference on the thickness of the rectus femoris in low intensity exercise of the elastic band applied with EMS between pre-test and post-test (p<.05). The results of this study showed that elastic band low intensity exercise combined with EMS had an immediate effective in increasing the thickness of rectus femoris. Based on this result, it is also necessary to verify the effectiveness of intervention methods incorporating low-intensity resistance exercises applying EMS to elderly who cannot exercise high-intensity resistance training in the future, and to develop exercise programs for various body parts.

• Science of Emotion and Sensibility
• /
• v.25 no.1
• /
• pp.115-128
• /
• 2022

This study investigates the effect of wrist guards equipped with electronic muscle stimulation on reducing wrist pain and improving wrist function of actual lure fishing participants. This study combined conductive fabrics by selecting two products of wrist guards that can be used in lure fishing, which requires holding fishing rods with hands for a long time. It was conducted on ten healthy men aged 35 to 45, and the selection conditions were selected for those who did not have a history of surgery on the wrist and are currently enjoying lure fishing as a hobby. The experimental movement was performed 100 times before each experiment to cause delayed muscle pain to cause wrist fatigue when lure fishing was performed with the operation of grip strength and range of motion. As a result of this study, it was found that pain reduction, range of motion, and grip strength were improved when electrical stimulation was applied after wearing a wrist band in the form of a wrist wrap and semi-gloves. The conclusion of this study was that when electrical stimulation was applied to the wrist guards, the effect of improving the fatigue and function of the wrist could be confirmed through experiments. Through this study, it is expected that wearing electronic muscle stimulation wrist guards will have a significant effect on preventing wrist injuries and improving functional recovery for lure fishing participants.

• Science of Emotion and Sensibility
• /
• v.24 no.2
• /
• pp.81-92
• /
• 2021

In this study, we investigated the effects of five EMS lumbar back pressure belts produced on an anatomical basis on lumbar spine stabilization. Five core muscles were selected, including the urinal, vertebral column, endotracheal, external abdominal, and large back muscles, and patterns were designed using a conductive fabric considering the appropriate muscle shape and pain-causing points. We experimented with four motions to examine the effects of different EMS abdominal compression belts on lumbar spine stabilization. Five healthy men in their 20s were selected. The selection conditions include no back pain history for the past three months, no restricted movements through pre-inspection, and the muscular strength of the body should belong to the normal grade. Using SLR, the sequence of experimental actions was chosen from the following but not limited to left-hand, body-hand, and back-line forces. Resting between movements lasted for 2 min, and the experiments were conducted after wearing the EMS abdominal pressure belt. Electrical stimulation was applied for 10 min to increase blood flow and muscle activation. The statistics of the experimental results were analyzed for specific differences by conducting the Wilcoxon and Friedman tests with nonparametric tests. The ranking results of each pattern were successfully assessed in the order of 5, 4, 3, 1, 2 for the five patterns, and we could identify slightly more significant results for experimental behavior associated with each muscle movement. Patterns produced based on anatomy showed differentiated effects when electric stimulation was applied to each muscle in different shapes, which could improve the stabilization of the lumbar spine in everyday life or training to the public. Based on these results, subsequent research would focus on developing smart healthcare clothing that is practical in daily life by employing different anatomical mechanisms, depending on the back pain, to utilize trunk-type tights.

• Journal of Fashion Business
• /
• v.28 no.5
• /
• pp.68-83
• /
• 2024

Abstract This study developed smart gloves that measure the wrist movements of lure fishing participants in real time and record occurrences of pain. These gloves enable users to monitor movement patterns and pain levels, and to take appropriate breaks through alarms. Key achievements include the measurement of grip strength, range of motion (ROM), and visual analog scale (VAS) tests. The stretch sensor is highly durable, recovers quickly even after repeated use, and can precisely measure various fishing movements. When the predetermined number of repetitions, set through motion recognition and notification functions (e.g., 30 or 60), is reached, a buzzer sounds to encourage rest. In the analysis of wrist function, it was confirmed that grip strength decreased after 100 casts but recovered following electrical muscle stimulation (EMS) training. The VAS results indicated that EMS training was effective in relieving pain and improving wrist function. Smart gloves and EMS training are valuable for preventing wrist pain and restoring function associated with fishing, and they suggest potential applications for various body parts and exercises. In future research, we plan to enhance the gloves' performance and strengthen data storage and analysis functions based on clinical trials in actual sea environments and user feedback.

• Journal of the Korean Applied Science and Technology
• /
• v.38 no.2
• /
• pp.453-464
• /
• 2021

Abdominal obesity is increasing due to a decrease in physical activity and westernization of diet in busy daily life. Therefore, in order to satisfy the desire for body shape management, a management program with high efficiency versus time is needed. In this study, the diet-gel (i.e., slimming cosmetics) with the electrical muscle stimulation therapy was used to promote the effect of reducing waist circumference and body fat mass (or abdominal fat). For men and women in their twenties, the subjects simply applied diet-gel to their waist, wore EMS, and massaged for 20 minutes twice a day after waking up and before going to sleep. The experiment period was carried out for 2 weeks. The reduction of subcutaneous fat was observed using non-contrast CT, and it was confirmed by measuring waist circumference and body fat mass. In conclusion, the developed EMS and diet-gel combination program showed excellent waist management effects by reducing waist circumference by about 3 cm (p<0.001) and body fat mass by about 1 kg (p<0.01). This result suggests that the use of EMS shows a massage effect by muscle stimulation, and plays a role in promoting fat decomposition by helping the absorption of diet gel.

• Journal of The Korean Society of Integrative Medicine
• /
• v.10 no.4
• /
• pp.113-120
• /
• 2022

Purpose : Lymphedema is a common complication in mastectomy patients and is usually characterized by pain, swelling, and limited range of motion (ROM) in the arm. Electromyostimulation (EMS) is widely used for the rehabilitation and recovery of subjects with various neuromusculoskeletal disorders after breast cancer. However, EMS has not yet been used in many Pilates exercises. This study was aimed at comparing the effects of instrument Pilates integrated with EMS on pain, lymphedema, and ROM of the upper extremity (UE) in breast cancer subjects after mastectomy. Methods : Nine female breast cancer subjects who had undergone mastectomy participated in the study. The subjects underwent instrument Pilates with EMS (experimental group) or instrument Pilates only (control group). Pain, lymphedema, and ROM of the UE were measured using the visual analog scale (VAS), the circumference length of the UE, and the ROM of the UE. The Wilcoxon signed-rank test was used to compare the pain, lymphedema, and ROM of the arm before and after the intervention, and the Mann-Whitney U test was used to compare the two groups. The statistical significance level was set to p < .05. Results : In the experimental group, there were significant differences in pain (p<.05) and UE circumference (p<.05) before and after intervention. However, there was no significant difference between the two groups in VAS (p>.05) or circumference length of the UE (p>.05). There was one significant difference between the groups in terms of internal rotation of the ROM of the UE (p<.05). Conclusion : These results show that instrument Pilates exercises combined with EMS may positively affect the internal rotation of the ROM of the UE in breast cancer patients after mastectomy, thus contributing to existing knowledge about instrument Pilates using EMS for the effective management of in breast cancer subjects after mastectomy.