@article{oai:kokushikan.repo.nii.ac.jp:00012461,
 author = {須藤, 明治 and SUDO, Akiharu and 山田, 健二 and YAMADA, Kenji},
 journal = {体育・スポーツ科学研究, Kokushikan society of sport science},
 month = {Mar},
 note = {J-GLOBAL ID : 200901006236324733, The current study examined 1,122 male and female swimmers from the ages of 11 to 18 over a 3-year period from 2011 to 2013. This study measured body composition and it examined recorded swim times at the venue of swim meets. The recorded swim times used in this study were officially recorded times. This study focused on differences in the muscle mass of the upper and lower extremities of 40 swimmers who competed in the 200-m freestyle event. This study compared swimmers whose swimming velocity increased during the latter half of the event（denoted here as “swimmers with increased velocity”）to those whose swimming velocity remained the same (denoted here as“ swimmers with the same velocity”).The results were as follows: 
1. The 50-m lap time of swimmers with increased velocity was compared to that of swimmers with the same velocity. In 150-200 m intervals, swimmers with increased velocity had a faster swimming velocity than swimmers with the same velocity had (p＜0.01).
2. Differences in the muscle mass of the upper extremities were compared in swimmers with increased velocity and swimmers with the same velocity. The muscle mass of the upper extremities differed less in swimmers with increased velocity than it did in swimmers with the same velocity (p＜0.05).
3. Differences in the muscle mass of the lower extremities were compared in swimmers with increased velocity and swimmers with the same velocity. The muscle mass of the lower extremities did not differ significantly in swimmers with increased velocity and swimmers with the same velocity.
　Thus, the right and left legs of 200-m freestyle swimmers had equivalent muscle mass. Results indicated that physical development, faster lap times, and balanced muscle mass in the upper extremities were required to improve recorded times., application/pdf},
 pages = {43--47},
 title = {上肢の筋バランスが200m泳後半に及ぼす影響},
 volume = {17},
 year = {2017},
 yomi = {スドウ, アキハル and ヤマダ, ケンジ}
}