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한국과 중국 엘리트 선수의 수영과 육상경기 기록비율의 성차
필사천(Bisiquan),권선옥(Sun-Ok Kwon) 한국발육발달학회 2018 한국발육발달학회지 Vol.26 No.4
This study analyzed relative records ratio of female athletes among the average records of a total of 1,986 male and female middle and high school track-and-field and swimming athletes who advanced to the finals of their respective sports at the National Sports Games and the National Youth Sports Games and the China National Youth Games in 2015, 2016, and 2017 by using independent-t testthe paired-t test. Based on the comparative analysis of the sports, the following conclusions were drawn from the study: First, relative records ratio showed no statistically significant differences between Korean and Chinese in total swimming. Second, relative records ratio showed no statistically significant differences between Korean and Chinese in total track-and-field. Third, relative records ratio showed statistically significant differences between track event and field event in total track-and-field(p<.001). Forth, relative records ratio showed statistically significant differences between swimming and track-and-field(p<.001). The above conclusions are meaningful as they demonstrate relative record ratio differences in gender among sports.
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필사천(Bisiquan),권선옥(Sun-Ok Kwon) 한국발육발달학회 2021 한국발육발달학회지 Vol.29 No.4
In this cross-sectional study, we examined the relationship between objectively-measured physical activity and obesity parameters in 473 upper class students of elementary school. Low, moderate, and vigorous physical activities were monitored by wearing an accerometer for 7 consecutive days. Measured parameters of obesity included percent body fat, body mass index (BMI), waist circumference (WC), and waist-to-hip ratio (WHR). Sexual maturity was assessed with using a Tanner scale. Indepenendent t-test and Pearson correlation analysis were used to test mean differences in measured variables and to calculate correlation coefficients, respectively. Logistic regression analysis was conducted to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for obesity risk by levels of physical activity. Girls had significantly higher values in Tanner scale, percent body fat, daily physical activity than boys. By contrast, boys had significantly higher values in BMI, WC, and WHR than girls. Logistic gression analysis showed that inactive students were likely to have higher risks for obesity, abdominal obesity, and upper body obesity compared to active students. In particular, inactivie students had a significantly higher risk for BMI-based obesity even after adjustments for age, sex, and Tanner scales as compared to active students. In summary, the current findings of the study showed that physical inactivity was an independent predictor for obesity in upper class students of elementary school, implying an urgency of an exercise intervention for the prevention of obesity and its metabolic complications associated with physical inactivity.
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