著者

樋口 博之 田中 睦英 押川 武志 岩本 壮太郎 福本 安甫 ヒグチ ヒロユキ タナカ ムツヒデ オシカワ タケシ イワモト ソウタロウ フクモト ヤスホ Hiroyuki HIGUCHI Mutsuhide TANAKA Takeshi OSHIKAWA Soutarou IWAMOTO Yasuho FUKUMOTO

雑誌

九州保健福祉大学研究紀要 = Journal of Kyushu University of Health and Welfare

巻号頁・発行日

vol.10, pp.141-144, 2009-03

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The purpose of this study was to investigate the effect of sports drinks on respiratory quotient (RQ) during moderate exercise, Six young male subjects (aged 20 yr) participated in this study, after the informed consent was obtained from all subjects. Subjects performed a maximal test and four exercises at 50% of maximal oxygen uptake (VO[2]max) using a bicycle ergometer. During exercise tests VO[2], carbon dioxide excretion and RQ were measured by the respiratory gas analyzer. Subjects randomly drunk water or three sports drinks (Pocarisweat, VAAM, Gatorade) (200 ml) before 10 min at the beginning of each exercise, then exercised at 50% VO[2]max for 20min. At rest VO[2] and RQ were 3.6±0.4 ml/kg/min and 0.90±0.09, respectively. VO[2] increased 1.6±3.8 ml/kg/min at 20 min exercise (p<0.001). RQ during exercise was not statistically different from at rest. The differences in VO[2] and RQ among four drinks were not found. These results suggest that VO[2] and RQ during exercise is not extended by the intake of sports drinks.

著者

猪口 清一郎 岩本 壮太郎 石川 博 東 慶紀

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.29, no.1, pp.45-51, 1980-03-01 (Released:2010-09-30)

参考文献数

26

被引用文献数

1

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The muscle fibers of M. rectus abdominis from 3 sportsmen (Weight-lifting, Boxing and Body-building) were examined histologically and compared with the mean of 22 human control subjects. Following results were obtained.1. Compared with the M, rectus abdominis of control subjects, the sportsmen's rectus abdominis muscle area was about 4 times the cross-sectional area of muscle belly and the number of muscle fibers per sq, mm, were 1/3 that of the control specimens. The total number and mean size of sportsmen muscle fibers corresponded to the respective maxima of the controls, and the muscle fiber density in sportsmen corresponded to the minimum control value.2. Comparing the myofibrous organization of 3 specimens, the muscle of the boxer was largest in cross-sectional area, in frequency of muscle fibers with large diameter, and in volume of interstitial connective tissue. It was the smallest of the 3 specimens in the number of muscle fibers per sq. mm. We found that the muscle of the weight-lifter was intermediate in these four categories.