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RISS 인기검색어
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- 저자 : 윤우상(Yoon Woo-Sang) (검색결과 5 건)
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장기간의 크레아틴 구강 섭취가 근육과 간기능 및 근력에 미치는 영향
윤우상(Woo Sang Yoon),이신언(Shin Eon Lee),박동호(Dong Ho Park) 한국사회체육학회 2001 한국사회체육학회지 Vol.16 No.-
To investigate the effect of oral creatine supplementation on muscular strength, total protein, creatine, and BUN changes in twelve healthy college aged-men (20-22yrs) with at least one year of weight training experience as well as aspartate aminotransferase (GOT) and alanine aminotransferase (GPT) for muscle and liver functions. To compare the pre-test and post-test results, participants orally ingested either 30g of Cr or P five times per day for 12 weeks with a double blind fashion (groups: creatine monohydrate (Cr), n=6 and placebo (P), n=6). To find out significant differences between groups (Cr and placebo), time condition (pre-training and post-training) and interaction (2 groups 2 time points), a mixed factorial design was conducted. An increase in muscle strengths of knee flexors (Cr group: 28.57%; p<.05 Vs P group: 7.7%; p<.05) and extensor (Cr group: 18.01%; p<.05 Vs P group: 9.28%; p<.05) as well as in muscle strengths of shoulder flexors (Cr group: 22.86%; p<.01 Vs P group: 1.66%; p<.05) and extensor (Cr group: 12.18%; p<.01 Vs P group: 9.12%; p<.05) were occurred in Cr group only. In evaluation of blood component, although there were no significant increases in blood variables such as GOT, GPT, creatine, total protein, and BUN, post-test creatine, total protein, and BUN of the Cr group were slightly increased compared to the pre-test values while post-test creatine, total protein, and BUN of P group were either decreased or increased in comparison to the pre-test values, respectively. Consequently, without any increases in GOT, GTP, creatine, total protein, and BUN weight training with oral creatine supplementation led to greater increases in the muscular strengths of both knee and shoulder flexor and extensor. However, in terms of health, further researches required to conduct more deeply and broadly about side effects generated from prolonged oral creatine supplementation.
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상업스포츠센터 마케팅믹스요인이 이용객의 만족도와 재이용 의도에 미치는 영향
윤우상(Yoon Woo-Sang),장윤창(Chang Yoon-Chang) 한국체육과학회 2009 한국체육과학회지 Vol.18 No.1
The purpose of this study was to examine the relationships between marketing mix factors, satisfaction, and reuse intention of customers from priviate sports centers. The subjects of this study were conveniently selected from members of 10 private sports club in Seoul. The total of 250 survey questionnaires was distributed to the respondents and 223 usable questionnaires were returned to the researcher and utilized for the data analysis. SPSS 13. 0 was used for reliability, explorator factor analysis, correlation, and multiple regression analysis. The results were as follows. First, users' perceived marketing mix factors had a significant impact on their satisfaction with the sports centers. Second, users' perceived marketing mix factors had a significant impact on their reused intention.
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최조연(Choi jo-yeon),윤우상(Yoon woo-sang),손두옥(Shon du-ohk) 한국체육과학회 2002 한국체육과학회지 Vol.11 No.1
The purpose of this study was to identify the significance of the measurement of instantaneous power depending on various exercise load using simple and straight leg extension exercises in seated form. The subject of the study were 40 students from K university sports club (boxing, Judo, Taekwondo), 47 male and 35 female students in the department of physical education who have no clinical difficulty in doing leg extension exercises. They participated in 3 types of leg extension exercises. As a result, the absolute value and relative value of the maximum extension power at a weight load (100% weight) were significantly higher (P<0.05) in athlete and male students group as compared to the female students group. The velocity vs. force in the maximum extension power accounted for 51.6% vs. 48.4% in athlete group, 44.0% vs. 56.0% in male students group, and 46.5% vs. 53.5% in female students group. The extension speed was significantly higher (p<0.05) in the athlete and male students group as compared to the female students group while extension time was significantly shorter (p<0.05) in the athlete group as compared to the male and female students group. The maximum extension power (absolute value) at lower weight loads (80% eight) was significantly higher (p<0.05) in the athlete and male students group as compared to the female students group. As for relative value, the results were significantly higher (p<0.05) in the athlete group as compared to the male and female students group. The velocity vs. force in the maximum extension power accounted for 59.5% vs. 40.5% in the athlete group, 52.7% vs. 47.3% in the male students group, and 54.5% vs. 45.5% in the female students group. Extension speed was significantly higher (p<0.05) in the athlete and male students group as compared to the female students group, while the extension time were almost identical in all three groups. The maximum extension power (absolute value) at high weight loads (120% weight) was significantly higher (p<0.05) in athlete and male students group as compared to the female students group and in the relative value. The results were almost identical in the athlete and male students group while it was significantly higher (p<0.05) than in the female students group. The velocity vs. force in the maximum extension power accounted for 45.3% vs. 54.7% in the athlete group, 35.5% vs. 64.5% in the male students group, and 39.9% vs. 60.1% in the female students group. The extension speed and time for athletes and male students were significantly higher (p<0.05) than those for female students. The instantaneous leg extension exercise using the weight load employed in this study can be considered an effective power measurement item which can be applied not only to professional athletes but also to general public in that there are no technical influences in its execution of the motion and there are almost no risk of injuries.
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김영우(Kim Young-Woo),선우섭(Sunoo Sub),윤우상(Yoon Woo-Sang),최조연(Choi Jo-Yeon) 한국체육과학회 2001 한국체육과학회지 Vol.10 No.1
The purpose of this study is compare the maximal isokinetic strength at 60ㆍ180ㆍ240deg/sec of knee extension and flexion, as well as ipsilateral ratio and bilateral ratio at 60deg/sec between demonstrator and athletes in collegiate taekwondo players. There was no significant difference in maximal isokinetic strength at 60ㆍ180ㆍ240deg/sec of knee extension and flexion. Due to the possible injury, the same side strength ratio (ipsilateral strength balance) and both side strength ratio (bilateral strength balance) at 60deg/sec condition was not performed.
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