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운동생리학 : 아마추어 마라톤 동호인들과 일반인들의 최대산소섭취량과 체지방율 비교연구
이신언(ShinEonLee) 한국체육학회 2003 한국체육학회지 Vol.42 No.3
This study sought to determine how V˙O2max and %body fat are related to the differences between male marathon club members and Non-exercise members. Marathon club members were competed pro and amateur level games for 6 months to 5 years. Subjects were 200 male non-exercisers and amateur marathon runners selected from several clubs, who ran at least 30km×wk(-1) for 6 months to 5 years. V˙O2max was measured on a treadmill and %body fat by bio-impedance method. The results, mean and standard deviation, were obtained by Independent-Sample t-test and the significant level p was set at 0.05 the result were as follows. V˙O2max in the marathon club members were 55.0±9.4㎖/㎏/min and non-exercisers were 44.3±9.8㎖/㎏/min. The V˙O2max measured on the treadmill was significantly higher(p=0.05) in the club marathon runners as compared to the non-exercisers, and they showed significantly negative correlation(p=0.01) between two groups. The results of the %Body fat in the marathon club members were 14.1±4.8% and non-exercisers were 17.5±5.0%. The %Body fat measured by bioimpedance method was significantly higher(p=0.05) in the club marathon runners as compared to the non-exercisers, and statistically they showed significantly negative correlation(p=0.01) between two groups.
자연과학편 : 대학야구선수의 견관절 복합체의 내,외회전력과 관절가동범위
이신언(ShinEonLee),김홍인(HongInKim),임승길(SeungKilLim) 한국체육학회 2006 한국체육학회지 Vol.45 No.1
Purpose: The purpose of this study was to measure the internal and external rotator peak torque, peak torque % body weight, of the isokinetical shoulder joint, and range of motion in collage baseball players. Also to determine whether significant differences exist between the dominant shoulder joint extremity and nondominant extremity.Method: Twenty healthy collage baseball players tested bilaterally on Cybex 770 model at 180, 300°/sec for concentric internal and external rotation of the shoulder joint with the arm in 45° of abduction and ROM of shoulder complex in supine position with the arm in 90° abduction. Paired t-test was used to test for differences between shoulder joint extremities for strength and ROM.Results: No significant difference between the dominant and nondominant shoulder joint was found for strength of internal and external rotators at 180, 300°/sec. No significant difference between the dominant and nondominant shoulder joint was found for strength ratio of internal and external rotators at 180, 300°/sec. But the external rotation ROM with the arm in 90° of abduction was statistically greater in the dominant shoulders than in the nondominant shoulders. Also the internal rotation ROM were statistically less in the dominant shoulders than in the nondominant shoulders. But there was no significance in total ROM.Conclusion: The throwing shoulder require strengthening of the external rotators, and stretching exercises of the internal rotators to prevent the shoulder joint injuries in collage baseball players.