• 대한통합의학회지
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• 제9권3호
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• pp.111-124
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• 2021

Purpose : The purpose of this study is to evaluate whether physical ability is improved by body stabilization, develop training methods to improve physical fitness factors suitable for body conditions, and provide future management and exercise materials to improve Taekwondo athletes' performance, after conducting the Body stabilization exercise (BSE) program on 22 elementary school Taekwondo athletes for 10 weeks to strengthen core muscles and evaluating Visual response speed test (VRST), Functional movement screen (FMS), Y-Balance test (YBT) and Vital capacity (VC). Methods : In order to examine the impact of the BSE program on Taekwondo athletes' VRST, FMS, YBT and VC this study conducted individual evaluations on all subjects, including VRST, FMS, YBT and VC before applying the programs, and compared exercise effects before and after the program, before and after exercise by a certain period. Results : After exercising, strength and quickness were improved significantly and reaction time was significantly shortened (p<.001). The total score of FMS was improved from 10.86±1.17 before to 11.68±0.99 after exercising, was statistically significant (p=.014). YBT was significantly improved from 91.11±4.84 before to 95.68±5.15 after exercising (p<.001). VC improved was statistically significant (p<.001). Conclusion : In conclusion, the BSE athletic program is expected to help Taekwondo athletes perform well by preventing and reducing injuries through the improvement of muscular strength, strength, speed, agility, step, kick, balance, flexibility, full body endurance and the combination of technical abilities.

• 한국융합학회논문지
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• 제5권4호
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• pp.61-68
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• 2014

본 연구는 schroth 운동(3차원적 융합운동)이 폐기능과 Cobb's angle, scoliometer angle과 척추세움근의 근활성도에 미치는 영향을 알아보기 위해 실시되었다. Cobb's angle $10^{\circ}$ 이상의 특발성 척추측만증을 가지고 있는 학생 40명을 대상으로 각각 20명의 슈로스운동군과 전통적인 치료군으로 나누어 총 8주간 주 3회, 회당 60분의 운동을 실시하였다. 8주간의 Schroth 운동을 적용한 그룹에서는 Cobb's angle과 갈비뼈 돌출부, 폐활량, 체간의 확장, 오른쪽 흉추부위의 활성도에 유의한 차이를 보였다. 8주간의 전통적인 측만증 운동을 실시한 그룹에서는 체간의 확장성에서 유의한 차이를 보였다. 본 연구의 결과를 통해 3차원적 접근법인 슈로스운동이 특발성 척추측만증 환자의 흉추측만각도의 감소와 폐기능의 향상을 목적으로 한 중재기법으로 기존의 운동방법보다 효과적이라고 할 수 있다. 따라서 차후의 연구에서는 척추측만증이 장기간의 관리와 치료가 필요한 질환임을 이해하고 이에 따라 체계적인 자세관리와 3차원적 융합운동 프로그램의 적용이 필요하다고 사료된다.

• Journal of Preventive Medicine and Public Health
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• 제42권1호
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• pp.21-28
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• 2009

Objectives : Whilst hypertension exerts a negative effect on several organs there have been few studies regarding its effect on pulmonary function. The objective of this study was to examine the relationship between hypertension and pulmonary function in rural Korean adults Methods : In 2006, 2534 people were recruited, aged 40 to 70, in Kangwha County. We selected 1454(male: 624, female: 830) participants whose pulmonary function results were repeatable. Blood pressure(BP) was measured twice and the average calculated. Participants were divided into two groups(hypertensive group and non-hypertensive group) in accordance with The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure. Pulmonary function was measured by dry rolling seal spirometry. Forced expiratory volume in the one second and forced vital capacity were converted into percent-predicted values based on average pulmonary function amongst Koreans. Results : The number of hypertensive participants in the present study was 460(male: 205, female: 255) and the number of non-hypertensive participants was 994(male: 419, female: 575). Our findings have shown that the mean values for expiratory volume in the one second and forced vital capacity were significantly lower for hypertensive people than for non-hypertensive people, among women(P=0.002 for forced expiratory volume in the one second, p<0.001 for forced vital capacity volume). Odds ratio analysis revealed that hypertensive participants were more likely to have lower pulmonary function than non-hypertensive participants, again significantly among women. Conclusions : The pulmonary function of hypertensive women was significantly lower than that of non-hypertensive women aged 40-70.

• Safety and Health at Work
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• 제5권4호
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• pp.222-226
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• 2014

Background: Focusing on the respiratory function for health effect indices, we conducted a cross-sectional study on workers who did and did not handle toner to compare the longitudinal changes. Methods: Among 116 individuals who worked for a Japanese business equipment manufacturer and participated in the study, the analysis included 69 male workers who we were able to follow up for 4 years. We categorized the 40 workers engaged in toner-handling work as the exposed group and the 29 workers not engaged in these tasks as the referent group, and compared their respiratory function test results: peak expiratory flow rate (PEFR), vital capacity (VC), predicted vital capacity (%VC), forced expiratory volume in 1 second ($FEV_1$), and forced expiratory volume in 1 second as a percent of forced vital capacity ($FEV_1%$). Results: The cross-sectional study of the respiratory function test results at the baseline and at the $5^{th}$ year showed no statistically significant differences in PEFR, VC, %VC, $FEV_1$, and $FEV_1%$ between the exposed and referent workers. Also, respiratory function time-course for 4 years was calculated and compared between the groups. No statistically significant differences were shown. Conclusion: Our study does not suggest any toner exposure effects on respiratory function. However, the number of subjects was small in our study; studies of larger populations will be desired in the future.

• 대한물리치료과학회지
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• 제30권4호
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• pp.54-62
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• 2023

Background: The purpose of this study was to investigate the effects of breathing training on the balance ability, lung capacity, and shooting score of shooting athletes. Design: Randomized controlled trial. Methods: Twenty shooters were randomly assigned to the experimental group and the control group. Both the experimental group and the control group performed trunk stabilization exercise, and the experimental group received breathing training during exercise. Balance ability, lung capacity, and shooting score were measured before and after the intervention. Results: There was a significant difference in the forced expiratory volume at one second(FEV1), forced vital capacity(FVC) before and after intervention in the experimental group. In the comparison between the two groups, there was a significant difference in FVC between the control group and the control experimental group. Conclusion: The application of breathing training was effective in improving the lung capacity of shooters.

• Earthquakes and Structures
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• 제26권6호
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• pp.449-461
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• 2024

The vertical reinforcement connection between the precast reinforced concrete shear wall and the cast-in-place reinforced concrete member is vital to the performance of shear walls under seismic loading. This paper investigated the structural behavior of three precast reinforced concrete shear walls, with different levels of connection (i.e., full connection, partial connection, and no connection), subjected to quasi-static lateral loading. The specimens were subjected to a constant vertical load, resulting in an axial load ratio of 0.4. The crack pattern, failure modes, load-displacement relationships, ductility, and energy dissipation characteristics are presented and discussed. The resultant seismic performances of the three tested specimens were compared in terms of skeleton curve, load-bearing capacity, stiffness, ductility, energy dissipation capacity, and viscous damping. The seismic performance of the partially connected shear wall was found to be comparable to that of the fully connected shear wall, exhibiting 1.7% and 3.5% higher yield and peak load capacities, 9.2% higher deformability, and similar variation in stiffness, energy dissipation capacity and viscous damping at increasing load levels. In comparison, the seismic performance of the non-connected shear wall was inferior, exhibiting 12.8% and 16.4% lower loads at the yield and peak load stages, 3.6% lower deformability, and significantly lower energy dissipation capacity at lower displacement and lower viscous damping.

• BMB Reports
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• 제46권4호
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• pp.188-194
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• 2013

Two-photon microscopy (TPM), which uses two photons of lower energy as the excitation source, is a vital tool in biology and clinical science, due to its capacity to image deep inside intact tissues for a long period of time. To make TPM a more versatile tool in biomedical research, we have developed a variety of two-photon probes for specific applications. In this mini review, we will briefly discuss two-photon probes for lipid rafts, lysosomes, mitochondria, and pH, and their biomedical applications.

• 대한통합의학회지
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• 제9권4호
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• pp.11-18
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• 2021

Purpose : The purpose of this study was to investigate the effect on lung capacity of healthy men and women in their twenties by performing an intervention using the chest extension exercise and the bridge exercise, which are respiratory muscle strengthening exercises. Methods : Thirty adult men and women in their 20s participated in this study. All subjects participated in the study after hearing the explanation of the purpose and method of the study, filling out a consent form. All subjects were randomly assigned to the chest extension exercise (CEE) group and the bridge exercise (BE) group of fifteen each. Each exercise was performed twice a week for 4 weeks. Lung capacity was measured by forced vital capacity (FVC) and forced expiratory volume in one second (FEV₁) using spirometry. Lung capacity was measured before and after exercise. The measured data were compared through the dependent t-test and the independent t-test. The statistical significance level was set at .05. Results : After the intervention, the CEE group showed a significant increase in FVC and FEV₁ compared to before the intervention (p<.05). After the intervention, the BE group also had a significant increase in FVC and FEV₁ compared to before the intervention (p<.05). However, there was no difference in FVC and FEV₁ between groups before and after the intervention (p>.05). Conclusion : There was no difference between groups in lung capacity after exercise. However, both the chest extension exercise and the bridge exercise increased FVC and FEV1, which was thought to be because both exercise methods were effective in increasing lung capacity. Therefore, both chest extension exercises and bridge exercises can be effectively applied as a way to increase lung capacity.

• 산업경영시스템학회지
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• 제19권40호
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• pp.253-261
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• 1996

In optimizing the layout design of a multi-product assembly environment, tile analysis of the material flow is a vital ingredient. In flexible assembly systems, assembly time is usually very short thus the transfer time is relatively more important Therefore operations sequence must be so determined, that have no backtracking operations as possible as, It is important to form cells, so that they have no intercell movement in curring much processing delay, and to arrange machines as possible as densly. This study presents a independent cell formation method considering operation sequences and machine capacity in flexible assembly systems.

• 보험의학회지
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• 제33권2호
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• pp.8-11
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• 2014

Pulmonary function test is a group of tests which are composed of measurement for lung function. Thy are spirometry, blood-gas analysis, lung volumes, exercise test, diffusion capacity, and bronchial challenge test. In this article, I will review the pulmonary function test and it's application in terms of clinical aspect and insurance medicine. The standard spirometric indicies are forced vital capacity(FVC), forced expiratory volume at 1 second(FEV1), and the ratio of FEV1 over FVC(FEV1/FVC). If the value of FEV1/FVC less than 70%, the examinee has obstructive ventilatory dysfunction.