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1 Effects of Korean National Fitness Award Program Group Exercise on Daily Fitness and Balance Confidence among the Elderly Participants
Saejong Park ; Hong-Sun Song ; Kwang-Jun Kim ; Young-Yun Jin ; Hyoung-Jun Kim Vol.25, No.4, pp.650-663
초록보기
Abstract

The purpose of this study was to investigate the effects of National Fitness Award program group exercise classes on daily fitness and balance-confidence among the elderly participants(n=496, 80.2% women). This study investigated body composition, daily fitness, and balance-confidence, and quality of life among the subjects who participated in the combined exercise program of improving physical fitness class for 8-week in the 10 national physical fitness certification centers by the demonstration project for the elderly of 2013 Korean National Fitness 100 project. Body composition and physical fitness for daily living were defined by Korean National Fitness 100 project for elderly, also the balance-confidence and health-related questionnaires were added. The following results were obtained by comparing the pre-test and post-test. In body composition body weight (p<.05), body mass index (p<.05), fat mass (p<.01), and percent body fat (p<.05) were significantly decreased, but muscle mass was not. Except for walking-around-two-cones-in-a-figure 8, all other daily fitness items such as relative grip strength (p<.001), chair sit to stand, two minutes place to walk, and sit-and-reach significantly increased (p<.01), and timed up and go were significantly decreased (p<.01). In balance confidence rating ABC tests (p<.001) were shown significantly increased. Although, quality of life measured by EQ-5D was not significantly improved, self-health status measured by EQ-VAS (p<.001) showed significant increase. Therefore, the group exercises of National Fitness Award program improved body composition, daily fitness and balance confidence in Korean elderly participants.

2 Comparison of Pitching Motion of High School Baseball Pitchers
Sung-Yong Kim ; Ji-Tae Kim ; Hong-Sun Song ; Jong-Chul Park Vol.25, No.1, pp.21-29
초록보기
Abstract

The purpose of this study was to classify high school baseball players as superior or inferior group by Functional Movement Screen(FMS) and to provide basic information for finding great pitcher and improving exercise performance by comparing and analyzing the pitching motion. The results of this study are as follows. The inferior group’s center of mass(COM) moved significant on the left side than superior group at heel contact(HC), ball release(BR), and follow throw(FT)(p<.05). There were no significant difference in linear velocity of shoulder, elbow and wrist between two groups, but inferior groups showed large difference in each joint. The superior group controled rotation of pelvis at HC and showed significant higher knee extension at BR and FT than inferior group(p<.05). The angular velocity of superior group’s throwing arm were higher in acceleration period(p<.05). Taken together based on the results, the players who have higher muscle function showed great pitching motion, so we can conclude that FMS could be useful for evaluating the potential of pitcher.


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