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김정기,김규호,임영조,박기용 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1
This study was to investigate the influence of the isokinetic trunk training with different load speed on the bone mineral density. Y University male students were recruited as subjects and the isokinetic trunk extension and bone mineral density were measured three times every third week. The results of this study were as follows. 1. at 30。 /sec of load speed, the trunk extension of low speed training group (LTG) and compound speed training group (CTG) was increased significantly than that of the high speed training group (HTG) after three weeks of the training. 2. at 60。 /sec of load speed, the trunk extension of CTG was increased significantly than those of the LTG and HTG. 3. at 90。 /sec of load speed, the trunk extension of HTG was increased significantly than those of the CTG and LTG. 4. at 120。 /sec of load speed, the trunk extension of CTG was increased significantly than those of the LTG and HTG. 5. at 150。 /sec of load speed, the trunk extension of LTG and CTG was increased significantly than that of the HTG. 6. the increase of trunk extension did not affect the bone mineral density of L2, L3, and L4.