35 0 0 0 OA 医学部入学者の, 高校・医進・専門・国家試験における成績間の相互関連
3 0 0 0 OA 人体比重― 体脂肪量に関する研究
- 著者
- 小川 正行 永田 稔 辻 達彦
- 出版者
- The Japanese Society of Health and Human Ecology
- 雑誌
- 民族衛生 (ISSN:03689395)
- 巻号頁・発行日
- vol.45, no.4, pp.153-161, 1979 (Released:2011-02-25)
- 参考文献数
- 31
- 被引用文献数
- 1 1
A device for underwater weighing by utilizing a swimming pool was tentatively made, and with it, the weights in water of 111 male students were measured. And from the thus obtained weights in water, the body density was calculated to be compared, for its justification, with those already reported by other workers in the literature. This study aimed at the examination of the body composition of boys in the developing stage. And the points to pay attention in this case were discussed. The principal findings were as follows: 1) The body density obtained by this method from the above mentioned subjects was 1.0724 ± 0.0092 (mean ± standard deviation). This approximately agrees with 1.07, the normal (general) value for the Japanese adolescent males, estimated from the reports in the literature. 2) The residual volume (RV), an important factor determining the body density needs to be measured exactly. The maximal expiratory level which affects RV, is relatively easy to determine in case of the underwater weighing thanks to water pressure. When elementary school children are the subjects of weighing, however, sufficient attention must be paid to avoid danger, because breething needs to be arrested during a time from the attainment of the maximal expiratory level until the end of the weighing. 3) The underwater weighing can be made within 5 seconds after the attainment of the maximal expiratory level of the subject. The body weights in water of the subjects of the present study averaged 3.03±0.578kg (range, 4.25 to 1.60kg.).
1 0 0 0 OA 小學校管理法
- 著者
- 小川正行, 佐藤熊治郎, 篠原助市 共著
- 出版者
- 寶文館
- 巻号頁・発行日
- 1911
- 著者
- 後藤 香織 野村 孝路 小川 正行
- 出版者
- 日本水泳・水中運動学会
- 雑誌
- 水泳水中運動科学 (ISSN:18806937)
- 巻号頁・発行日
- vol.10, no.2, pp.23-30, 2007 (Released:2008-05-24)
- 参考文献数
- 13
- 被引用文献数
- 2 1
Physical strength and performance test (PSPT) results for elite junior divers selected annually in the diving competition finals of the National Junior High School Selection Swim Meets (1998∼2005) were studied. It was found that the relationship between the PSPT results and the competition scores compared from the viewpoint of the annual results were as follows: the PSPT results for both genders indicated gradual improvements among male and female springboard divers, and male and female platform divers (ANOVA: p<0.05). The competition scores for springboard diving also indicated gradual improvements as mentioned above. Various athletic abilities, such as the flexibility of the shoulder joints, body tucks, etc., and especially muscular strength were improved during the PSPT. It was recognized that this unique improvement in the PSPT and competition scores have been achieved by using newly developed training systems.