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      • KCI등재

        유사 체구성성분의 운동선수와 비운동선수의 최대하운동에 따른 혈장량 및 체수분조절호르몬 비교

        박승한(Seng Han Park),류호상(Ho Sang Ryu),권영우(Young Woo Kwon),정연수(Yeun Soo Jung),이종삼(Jong Sam Lee),김진형(Jin Heung Kim) 한국사회체육학회 2010 한국사회체육학회지 Vol.0 No.41

        The purpose of this study was to investigate the effects of submaximal exercise on plasma volume and fluid regulatory hormones (ACTH, renin, aldosterone) between ski athletes and non-athletes. A total of 19 male subjects (10 athletes and 9 non-athletes) were participated in the study and their mean age was 22 years old. Submaximal exercise sessions took place on a bicycle ergometer performing 4 minutes of pedalling to reach targeted intensity (75% V·O2peak) and continued during 20 minutes. Blood samples extracted during rest and immediately after exercise. The Plasma volume decreased immediately after exercise in the both groups, but there were no significant difference between the athletes and the non-athletes. The ACTH, renin and aldosterone concentrations were significantly elevated immediately after exercise in the both group. In particular, the increase was significantly greater in the non-athletes compared to the athletes in the blood renin concentration.

      • KCI등재후보

        대학씨름선수의 경력, 체급, 수준별 인지스트레스와 탈진, 경쟁불안 비교

        박승한(Park Sung-Han),허용(Huh Yong) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.1

        The purpose of this study is to analyze the difference of the levels of perceived stress and burnout of each group of college Ssireum players, difference in competitive status anxiety and the correlation between each items. This study conducted survey research on 156 wrestlers among those who are registered in Korea Ssireum University Federation. Those 156 wrestlers took PSS and Sports Burnout Test in the day of no game and when there was a game, they took Competitive Status Anxiety Examination. Scores of career, weight, perceived stress and burnout by level, and competitive status anxiety were compared through t-test and the correlations between level of perceived stress, burnout, and competitive status anxiety were studied through analysis on their mutual relationships. SPSS (Ver. 14.0) was used for analysis of the data. The result of the analysis shows little difference in level of perceived stress and burnout of wrestlers that were grouped by career, weight, and level. However, among subordinate factors of competitive status anxiety, there were a little difference (p<.05) in career levels in somatic anxiety and also in weight levels in self-confidence. Level of perceived stress showed some relationship (p<.01) with emotional exhaustion among subordinate factors of burnout, with cognitive anxiety (p<.01) and somatic anxiety (p<.05) among subordinate factors of competitive status anxiety. However, it showed negative correlations with self-confidence. Through analysis on correlations between perceived stress, burnout and competitive status anxiety, we could know that there are correlations between the level of perceived stress and burnout and competitive anxiety which are experienced in daily life. We believe that through controlling and strategy for reduction of perceived stress, Ssireum players can prevent burnout and decrease competitive status anxiety.

      • KCI등재

        경피적 전기 신경 자극의 적용 부위에 따른 자율신경계 활성도 변화 비교 및 평가

        박승,최준원,정면규,이강인,김한성,Park, Seung Won,Choi, Jun Won,Jeong, Myeon Gyu,Lee, Kang In,Kim, Han Sung 대한의용생체공학회 2021 의공학회지 Vol.42 No.3

        Purpose: The aim of this study is to find the location of acupoints that are effective for increasing parasympathetic nervous system(PNS) activity among acupoints used to relieve symptoms such as dizziness and nausea. Materials and Methods: Twenty healthy adult men participated in this experiment. Transcutaneous electrical nerve stimulation(TENS) was applied to P6(Neiguan), ST36(Zusanli) and BL20(Pishu) for 30 minutes. For 5 minutes before and after stimulation, Electrocardiogram(ECG), Electrodermal activity(EDA), Respiration, and Skin temperature(SKT) were measured using biosignalsplux Professional(biosignalsplux; Portugal). Paired t-test was performed for the results before and after stimulation, and a one-way ANOVA test between stimulations was performed for the rate of change before and after stimulation. Results: When each acupoint was stimulated with TENS, it was found that the PNS was generally activated. In addition, when considering the change in biosignals after stimulation, the participants stimulated with P6 showed the most consistent results. Conclusion: As a result of stimulating each acupoint, it was found that stimulating P6 can effectively increase PNS activity. These results indicate that methods of stimulating P6 may be most effective in alleviating symptoms of motion sickness.

      • KCI등재

        대학 씨름선수의 체력 프로파일과 경기력 예측

        박승한 ( Sung Han Park ),김규호 ( Kyu Ho Kim ),허용 ( Yong Huh ) 대한무도학회 2009 대한무도학회지 Vol.11 No.1

        이 연구는 대학교씨름선수들을 각 체급별 체격과 체력 및 무산소운동능력, 등속성대퇴근력, 요부근력의 특성을 분석하고, 씨름선수들을 우수선수와 비우수선수로 구분하여 우수선수의 경기력 예측을 분석하는데 목적이 있다. 이러한 연구의 목적을 달성하기 위하여 체격과 체력 및 무산소운동능력, 등속성근력 측정은 대구경북·경남 지역의 대학교 씨름선수들 중 대한씨름협회에 등록된 선수들을 대상으로 동계 훈련 전에 측정을 하였으며 체급별로(7체급) 21명씩 전체 147명을 대상으로 하였다. 측정된 자료를 분석하기 위하여 일원변량분석(one-way analysis of variance; one-way ANOVA)을 실시하여 평균과 표준편차를 구하였으며 체급간 유의한 차이가 있는 경우 Scheffe의 사후검증을 하였다. 통계적 유의수준은 α=0.05로 하였다. 경기력 예측력을 구하기 위하여 로지스틱 회귀분석(logistic regression analysis)을 적용하여 입력방식(Enter)으로 하였으며 통계적 유의수준은 α=0.05로 설정하였다. 모든 체급이 높을수록 체격조건과 체력이 높은 수치를 나타냈으며, 등속성근력은 각 체급별로 굴근력 보다는 신근력이 높은 수치를 나타냈다. 우수선수를 예측할 수 있는 항목 중 체격은 신장, 체중, 흉위로 나타났으며 신체구성은 체지방, 비지방체중, WHR, BMI가 우수선수를 예측할 수 있는 항목으로 나타났다. 체력은 유연성과 악력(좌), 유산소능력으로 나타났으며 무산소운동능력은 평균파워와 피크파워가 우수선수를 예측할 수 있는 항목으로 나타났다. 결론적으로 대학교 씨름선수들을 대상으로 작성된 프로파일은 선수들의 훈련계획 및 운동처방에 활용될 수 있을 것이며 우수선수들을 예측할 수 있는 공식을 토대로 선수 발굴이나 선발에 유용한 준거 자료로 이용될 수 있을 것이다. This study measures college ssireum players` weight, physique, physical fitness, anaerobic power, thigh and trunk isokinetic strength and then correlates these measurements with player performance to search for predictive variables. These measurements are taken from 147 college Ssireum players. Ssireum players are profiled using one-way ANOVA and Scheffe`s method. Analysis of mean differences has a significance level of 0.05. Player performance predictions using logistic regression analysis also have a significance level of 0.05. Player measurements indicate that higher weight levels have higher physiques and physical fitness; also, isokinetic extension muscle strength exceeds isokinetic flexion strength. For higher performance players, predictive physique measurements include height, weight, chest circumference; predictive body composition measurements include body fat, leanness, waist-hip-ratio, and BMI; predictive physical fitness measurements include flexibility, left-hand grasping power, and aerobic ability; predictive anaerobic measurements include mean power and peak power. This study concludes that ssireum player profiles based on the above data can be used to tailor training plans and exercise prescriptions in addition to predicting future player performance.

      • VDT 사용자의 Pelvic Tilt와 Lumbar Lordosis의 간접 측정 방법론

        박승원(Seung Won Park),곽은정(Eun Jung Kwak),김동현(Dong Hyun Kim),김한성(Han Sung Kim) 대한인간공학회 2019 대한인간공학회 학술대회논문집 Vol.2019 No.5

        Objective: The aim of this study is to develop and verify an indirect method for estimating sitting posture by observing pelvic tilt and lumbar lordosis of visual display terminal (VDT) users. Background: Depending on the wrong sitting posture, musculosketal disorders (MSDs) such as low back pain may occur. In the case of the general public, it is impossible to observe the sitting posture quantitatively. Therefore, we developed a system that can estimate the user’s sitting posture through two IMUs. Method: Five participants were conducted test. Participants conducted paperwork for each one hour through a computer. When participants are working, we took video (Kinect V2, USA), measuring body pressure distribution by pressure mat (X3 LX100, Canada) and lumbar angle by two IMUs every fifteen minutes. Results: Results showed that lumbar lordosis and pelvic tilt of the subject could be indirectly estimated with only two IMUs. We could identify posterior pelvic tilt in user’s sitting posture as time goes on. Conclusion: This result can be alternative method of observing and evaluating the sitting posture of a person using VDT for a long time. Application: The results can evaluate the sitting posture of the VDT users, and can lead to sitting in a good posture.

      • KCI등재

        멀미 완화를 위한 비침습적 및 비약리적 방법 비교 및 평가

        박승,최준원,남상훈,최여은,이강인,정면규,신태민,김한성,Park, Seung Won,Choi, Jun Won,Nam, Sanghoon,Choi, Yeo Eun,Lee, Kang In,Jeong, Myeon Gyu,Shin, Tae-Min,Kim, Han Sung 대한의용생체공학회 2021 의공학회지 Vol.42 No.5

        Purpose: The purpose of this study is to present a way to alleviate motion sickness(MS) by stimulating acupoint through PEMFs, and to assess the effectiveness of PEMFs against stimulation previously used to stimulate acupoint using biosignal evaluations and surveys. Materials and Methods: Thirteen healthy men participated in the experiment. MS was induced in the participants, and MS relief stimulation was applied for 30 minutes. There were 4 types of MS relief stimulation, and Sham, Reliefband, Transcutaneous electrical nerve stimulation(TENS), and Pulsed electromagnetic fields stimulation(PEMFs) were used. The biosignals were measured during 30 minutes of applying MS relief stimulation, and the symptoms of MS were evaluated through a questionnaire survey. The measured biosignals are Electrocardiogram(ECG), Electrodermal activity(EDA), Respiration, Skin temperature(SKT), and Electrogastrogram(EGG). A one-way ANOVA test was performed for the rate of change by stimulation for MS relief over time. Results: Participants who were stimulated had a sharp decrease in MS symptoms. Biosignals were analyzed to evaluate autonomic nervous system activity, and the parasympathetic nervous system could be activated through stimulation. Conclusion: TENS and PEMFs were more effective in relieving MS symptoms than Reliefband. It is believed that PEMFs will be effective in consideration of the comfort of participants to be applied to actual vehicles, and studies to further verify the effects of PEMFs on MS should be conducted.

      • KCI등재

        운동 전 자연 비타민 섭취가 경증 관절염 환자의 염증인자 및 MDA에 미치는 영향

        박승한(Park, Seung-Han),권영우(Kwon, Yeung-Woo),성봉주(Sung, Bong-Joo) 한국체육과학회 2012 한국체육과학회지 Vol.21 No.6

        The purpose of this study was to investigate the effects of natural vitamin ingestion on acute exercise induced inflammatory factors(TNF, IL-6, CRP) and lipid peroxidation(MDA) in middle aged men with arthritis. In a randomized placebo-controlled trial, cross over design, eleven patient with light arthropathy were ingested into two treatment receiving one of the following supplements for 1 day(2 weeks apart): natural vitamin ingestion group(500ml natural vitamin mixed with apple, tomato, kiwi), placebo(500ml non-nutrient fluid). Each active men(age 45.5±5.81years) completed two maximal treadmill runs and resistance exercise(3 set with 10RM). Resistance exercise consists of leg press, leg curl, bench press, pull down, bicep curl, dumbbell kick back, sit-up, back extension. Blood samples were obtained from 30minutes after supplementation, post-exercise, and 2 hours after exercise. IL-6, CRP increased immediately and 2hours after exercise in both groups. Especially in case of CRP such exercise induced increase is grater at vitamin ingestion than placebo ingestion. Although MDA levels were similar between treatments at baseline, it increased significantly after immediately exercise and 2hours after exercise in both treatment. But no differences in the pattern of change were measured between natural vitamin ingestion and placebo trials. In conclusion, vitamin supplementation prevented endurance exercise-induced inflammatory response but had no effect on lipid peroxidation.

      • KCI등재

        흰쥐 골격근의 노화성 위축에 대한 운동훈련의 영향 - II. 장기간에 걸친 체중부하 훈련의 영향 -

        박승한,박원학,이용덕,김정기,Park, Sung-Han,Park, Won-Hark,Lee, Yong-Deok,Kim, Jung-Ki 한국현미경학회 1995 Applied microscopy Vol.25 No.4

        The present study was designed to examine effect of long term weight-training on aging atrophy in the rat skeletal muscle. Male rats of 8, 15, and 24 month old were used. Each age groups included control and weight-training for 5 months by using body press apparatus. The histo- and cytochemical, ultrastructural and stereological changes in aging skeletal muscles of the rat were observed in the present study. During the training period the body weight and muscular weight in all groups except the rectus femoris and the gastrocnemius in young age groups remained constant, but muscular weights were increased in the rectus femoris and the gastrocnemius muscles in young age groups. In trained rat, the volume density of muscle fiber type IIA and IIB were increased, but those of type IIC was decreased. Type I remained constant in 8 and 15 month old age groups, but reduced in the tibialis anterior and the gastrocnemius muscles in the 24 month old groups. Some histotological and ultrastructural changes associated with age were found: numerical increase of cytiplasmic vacuoles, lysosomes, lipofuscins, and irregularity of myofibrils. At 24 month old groups some unusual formation of contraction band and muscle splitting were observed. After weight-training, ultrastructural degenerative changes occured in the type I muscle fiber, such as splitting of muscle fiber, disorganization of myofilaments, swelling of mitochondria, accumulation of many lipid droplets, appearance of many lysosomes and residual bodies and necrotic fibers, in the old age groups. But, in the type II muscle fibers hypertrophy of muscle fiber appeared without any noticible damage as the type I. The activities of $Mg^{++}$ -ATPase decreased with age and this enzyme activities in the trained rat were significantly decreased with age. Activities of the acid phosphatase were increased with age and significantly in the trained rat. In stereological analysis, volume density of the myofibrils and the tubular system were increased, on the other hand there mitochondrial capacity was decreased. These experimental results suggested that old rats are not susceptible to be affected by weight-training as young rats, and that physical capacity of the rats must be considered when old rats are exercised for training.

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