• 대한물리의학회지
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• 제16권1호
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• pp.63-71
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• 2021

PURPOSE: The purpose of this study was to investigate the effects of trigger finger on pain, muscle strength and function in carpal tunnel syndrome (CTS) patients. METHODS: A total of 60 subjects (30 carpal tunnel syndrome with trigger finger and 30 carpal tunnel syndrome without trigger finger) were assessment for pain, muscle strength (power grip, key pinch , tip to tip pinch, three jaw pinch) and function. The effect sizes of the two groups were compared, and the correlation between the trigger finger and each variable was analyzed. RESULTS: The results showed that there were significantly difference in the pain, muscle strength excluding three jaw pinch and function (p < .05). The results also showed correlation between trigger finger and pain (r = .552), muscle strength excluding three jaw pinch (power grip r = -.296, key pinch r = -.260, tip to tip pinch r = -.285), and function (r = .375). The function of carpal tunnel syndrome patients was related to pain (r = .550) and power grips (r = -.324) of muscle strength. CONCLUSION: In carpal tunnel syndrome patients with trigger finger compared to carpal tunnel syndrome, muscle weakness, pain increase, and function reduction were shown. In addition, trigger finger are correlated with muscle strength, pain and function, and muscle weakness and increased pain affect the daily living of carpal tunnel syndrome patients with triggers finger. Therefore, physical therapy interventions of carpal tunnel syndrome patients with trigger finger should be combined with treatment for muscle strength enhancement as well as pain reduction.

• Steel and Composite Structures
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• 제42권3호
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• pp.407-426
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• 2022

Superior to traditional welded studs, high strength friction-grip bolted shear connectors facilitate the assembling and demounting of the composite members, which maximizes the potential for efficiency in the construction and retrofitting of new and old structures respectively. Hence, it is necessary to investigate the structural properties of high strength friction-grip bolts used in steel concrete composite beams. By means of push-out tests, an experimental study was conducted on post-installed high strength friction-grip bolts, considering the effects of different bolt size, concrete strength, bolt tensile strength and bolt pretension. The test results showed that bolt shear fracture was the dominant failure mode of all specimens. Based on the load-slip curves, uplifting curves and bolt tensile force curves between the precast concrete slab and steel beam obtained by push-out tests, the anti-slip performance of steel-concrete interface and shear behavior of bolt shank were studied, including the quantitative analysis of anti-slip load, and anti-slip stiffness, frictional coefficient, shear stiffness of bolt shank and ultimate shear capacity. Meanwhile, the interfacial anti-slip stiffness and shear stiffness of bolt shank were defined reasonably. In addition, a total of 56 push-out finite element models verified by the experimental results were also developed, and used to conduct parametric analyses for investigating the shear behavior of high-strength bolted shear connectors in steel-concrete composite beams. Finally, on ground of the test results and finite element simulation analysis, a new design formula for predicting shear capacity was proposed by nonlinear fitting, considering the bolt diameter, concrete strength and bolt tensile strength. Comparison of the calculated value from proposed formula and test results given in the relevant references indicated that the proposed formulas can give a reasonable prediction.

• 대한정형도수물리치료학회지
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• 제28권3호
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• pp.9-19
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• 2022

Background: The study objectives were to investigate the effect of Kinesio taping, Mulligan taping on push-off-test and maximum grip strength in elite men's artistic gymnast with wrist impingement syndromes. Methods: The subjects of this study were 18 wrist impingement syndromes men's artistic gymnast and randomly assigned to a Kinesio taping group, Mulligan taping group. Weight-bearing wrist pain and Muscle strength were assessed with push-off-test (POT) and the maximum grip strength (MGS). Results: As a result of the research, there were no significant difference in POT in pre and post group in the Kinesio taping (p>.05). But Mulligan taping group were significant difference in POT (p<.05). In comparison after intervention between each other groups, there was a no significant difference on (p<.05), but no significant difference on post (p>.05). there were significant difference in MGS in both pre and post group in the Kinesio taping and Maximum Grip Strength (p<.05). In comparison after intervention between each other groups, there was a no significant difference on pre (p<.05), but no significant difference on post (p>.05). Conclusion: This results suggests that Mulligan taping are encouraged due to effects on pain, Muscle strength increase in elite men's artistic gymnast with wrist impingement syndromes.

• 대한통합의학회지
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• 제11권2호
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• pp.181-196
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• 2023

Purpose : The purpose of this study was to investigate the effects of physical activity on impaired fasting glucose in adults aged 20 years or older. Methods : This study utilized raw data from the 8th National Health and Nutrition Examination survey (2019~2021). The subjects of this study were 5,344 adults aged 20 years or older who were confirmed to be free of diabetes. The control variables in this study model are health behavior characteristics (subjective health status, smoking, drinking), anthropometric characteristics (body mass index), and personal background characteristics (gender, age, income level, education level, marital status). As for the analysis method, the degree of physical activity was made into a dummy variable, and a probit model was used. Results : As a result of this study, compared to quartile 1 of the relative grip strength value obtained by dividing the grip strength by the body mass index (body mass index, kg, m²), fasting blood glucose levels were significantly higher in quartile 2 (.05, p<.01), quartile 3 (.04, p<.01), and quartile 4 (.04, p<.01). It was found that the probability of belonging to the normal category was higher than that of impaired fasting glucose. In addition, in the group of adults aged 20 or older who had a lot of aerobic and anaerobic physical activity, fasting blood sugar was more likely to be in the normal category. Conclusion : Based on the results of this study, it was suggested that diabetes should be managed through physical activity in the pre-diabetic stage, as prevention is important as well as treatment. From a practical point of view, muscle strength, such as grip strength, can be identified as a reliable indicator for identifying impaired fasting glucose.

• 대한의용생체공학회:의공학회지
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• 제44권6호
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• pp.482-487
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• 2023

The purpose of this study was to investigate changes in wrist extensor activity, pain, and grip strength before and after wearing a forearm strap in their 20s who complained of chronic lateral epicondylitis for more than 6 weeks. As a result of the study, there was an increase in wrist extensor activity on both the injured and non-injured sides after wearing the forearm strap, but this was not statistically significant. There was a statistically decrease in pain after wearing the forearm strap on the injured side, and a statistically significant increase in grip strength on both. After applying the forearm strap with pad, there was an increase in muscle activity of ECRB (extensor carpi radialis brevis) on both the injured and non-injured sides. This is thought to be due to the strap pad acting as a compressive force, reducing pain, and increasing muscle recruitment ability due to stability in wrist extension. However, considering that the number of study subjects is insufficient to generalize the results, additional supplementary research is deemed necessary.

• 대한통합의학회지
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• 제12권2호
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• pp.141-153
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• 2024

Purpose : This study aimed to determine the effects of a 12-week program of beta-glucan intake and muscle strengthening exercises on the body composition, physical fitness, blood lipids, insulin and insulin resistance of adult women. Methods : For this study, 45 adult women were selected and divided into two groups : the experimental group (n= 25), which received a combination of beta-glucan and strength exercise, and the control group (n= 20), which received only strength exercise. The program was conducted for 50 minutes three times a week for 12 weeks. Results : Several significant differences were found in both groups pre-to post program. First, in both groups, there were significant differences in hip circumferences (p<.05). Second, the results showed significant improvements in left grip strength and sit-ups achieved (p<.05), right grip strength (p<.001). Third although the results show no significant post-program differences in either group, there was a significant pre-to post-program difference in free fatty acids in both groups (p<.05). Fourth, the results show no significant differences in insulin or insulin resistance in either group, nor do they show any significant differences between the groups. Conclusion : The above results indicate that both groups exhibited decreased hip circumference and increased muscle strength (left grip strength) and muscle endurance. Furthermore, they indicate that when the beta-glucan intake and exercises were combined, the effects were more pronounced. Finally, because both groups exhibited significant increases in fat-free mass, muscle mass, skeletal muscle mass, muscle strength (right grip strength), and coordination as well as decreases in free fatty acids, it can be concluded that both the combined program of beta-glucan intake and exercise and a program of exercise alone can positively affect these outcomes.

• 대한영양사협회학술지
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• 제30권2호
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• pp.112-124
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• 2024

This study investigated the factors associated with HINT-8 (Korean health-related quality of life instrument with eight items), including health habits, hand grip strength, chronic disease, chewing function, mental health, and nutrient intake. In this study, the health-related quality of life (HRQoL; HINT-8) was assessed using the data from the 2019 Korea National Health and Nutrition Examination Survey (KNHANES VIII) among Koreans aged over 65, with HINT-8 being evaluated based on the general characteristics. Of the participants from KNHANES VIII, 1,455 subjects were analyzed using SPSS statistics complex samples (Windows ver. 27.0). The HINT-8 score was significantly lower in females and in those aged 75 years or older, lowest educational level, lowest income level, and single households. Logistic regression analysis, adjusted for the general characteristics, revealed a significant association between a lower HINT-8 group and various factors: low aerobic physical activity (OR=1.71, 95% CI=1.25~2.35), low hand grip strength (OR=1.34, 95% CI=1.02~1.78), chewing difficulties (OR=2.17, 95% CI=1.62~2.92), poor self-rated health status (OR=6.11, 95% CI=4.42~8.45), stressful mental status (OR=3.57, 95% CI=2.27~5.63) and poor calcium status (OR=1.45, 95% CI=1.11~1.88). On the other hand, this study could not reveal a significant association between a lower HINT-8 group and factors such as smoking, drinking, chronic disease, and nutrient intake status, except for calcium intake. This study suggests that HINT-8 is associated with aerobic physical activity, hand grip strength, chewing function, mental health, and calcium intake, but not with smoking, drinking, chronic disease, and nutrient intake.

• 한국운동역학회지
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• 제34권3호
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• pp.115-124
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• 2024

Objective: Based on the uncontrolled manifold (UCM) framework, this study investigated the hierarchical organization of redundant motor elements in multi-digit prehension, focusing on moment production across two control hierarchies. Method: Twelve adult males participated in the current experiment where they grasped a customized handle to generate and maintain target moments under isometric conditions in both pronation and supination directions. The forces exerted by the digits, recorded via transducers on the handle, underwent UCM analysis. This analysis quantified the synergistic actions across the upper and lower control hierarchies for stabilizing moments and grip forces. Additionally, synergy properties for lateral and medial fingers were analyzed to assess their distinct contributions (finger specialization) to moment and force stabilization. Results: Our findings revealed that the thumb and virtual finger contribute differently to net moment generation according to the direction of the moment, reflecting the different abilities of the individual fingers to produce moments. In the upper hierarchy, synergistic actions were notably stronger, effectively stabilizing both moments and grip forces. In contrast, the lower control hierarchy demonstrated a lack of synergy in force stabilization (trade-off synergy), although synergy in moment stabilization was preserved. Further, lateral fingers were found to play a more significant role in stabilizing moments compared to medial fingers. Conclusion: The pronounced synergy in grip force observed in the upper hierarchy implies that grip stabilization is likely an intrinsic strategy of the central nervous system, rather than merely a mechanical consequence. Furthermore, synergistic covariations of digit moments in both hierarchies indicate the neural controller's capability to generate synergies across hierarchies for stable multi-digit moment production. The notable contribution of lateral fingers in moment stabilization provides supporting evidence of finger specialization. Overall, this study elucidates the hierarchical interplay of redundant elements to achieve task-specific stability, especially in multi-digit prehension.

• 대한간호학회지
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• 제39권4호
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• pp.584-593
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• 2009

Purpose: The purpose of this study was to investigate the effect of stretching, muscle strengthening, and walking exercise on the cardiopulmonary function and health-related quality of life in hemodialysis patients. Methods: Twenty-one patients in the intervention and the control group participated in the exercise respectively on maintenance hemodialysis at four university hospitals. The exercise was composed of 20 to 60 min per session, 3 sessions a week for 12 weeks. The effect of exercise was assessed by cardiopulmonary function (peak oxygen uptake, peak ventilation, peak respiration rate, maximal heart rate, and exercise duration) using a cycle ergometer. Grip strength was measured by dynamometer, and flexibility was measured by sit and reach measuring instrument. Health-related quality of life was measured using Medical Outcomes Study Short Form-36. Results: Peak oxygen uptake, peak ventilation, peak respiration rate, exercise duration, grip strength, flexibility, and physical component scale were significantly improved in the intervention group after 12 week's exercise compared to the control group. Conclusion: These findings indicate the exercise can improve cardiopulmonary function, grip strength, flexibility, and physical component scale of health-related quality of life in hemodialysis patients.

• 근관절건강학회지
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• 제20권3호
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• pp.171-179
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• 2013

Purpose: The purpose of this study was to identify effectiveness of a BeHaS exercise program in breast cancer survivors. The subjects of breast cancer survivors participating in this research were selected from C National University Hospital. Methods: This study used non equivalent control group non-synchronized design with an experimental group (n=27) and a control group (n=31). The BeHaS exercise program consisted of theme activity, education, group support and exercise. The experimental group participated in session twice a week for ten weeks. Grip strength, perceived stress, cortisol, and self-esteem were measured. Data were analyzed by SPSS/WIN 12.0. Results: After the program, the grip strength and self-esteem of the experimental group were significantly higher than those of the control group. The perceived stress of the experimental group was significantly lower than that of the control group. Conclusion: The results of this study confirmed that BeHaS exercise program played a useful role in improving breast cancer survivor's physical and psychological problem.