著者
星川 佳広 飯田 朝美 古森 政作 中馬 健太郎 澁川 賢一 菊池 忍
出版者
一般社団法人 日本体育学会
雑誌
体育学研究 (ISSN:04846710)
巻号頁・発行日
vol.57, no.1, pp.249-260, 2012 (Released:2012-06-02)
参考文献数
31
被引用文献数
1

Previous studies have indicated that short-distance sprint ability is essential for achieving a high competitive level in soccer. However, there are no systematic data by which sprint ability in Japanese soccer players can be evaluated. The aim of this study was to develop an age-related evaluation chart for 20-meter sprinting time in male soccer players. The subjects were 807 high-level soccer players between 5th grade of elementary school and high school as well as 120 senior players including professionals. The sprinting time was measured on a grassed field using infrared photocell sensors with the subjects wearing soccer shoes. The sensors detected the release of the subject's rear foot at the start and the passing of the subject's trunk through the 20-meter position. The average time for field players decreased from 3.69(0.14) s for 5th graders to 2.98(0.08) s for seniors. The value for goalkeepers decreased from 3.79(0.12) to 3.07(0.11) s. Using the averages and standard deviations, an evaluation chart classifying the 20-meter sprinting time into 5 levels was presented for each age group. In addition, another chart taking birth date into account was also developed for 7th and 8th graders, since boys born earlier showed an advantage in the sprinting time. The time ranking for the fastest group in field players was less than 2.93 s for 9th graders and 2.86 s in seniors, resulting in a difference of only 0.07 s. In contrast, the value ranking for the slowest group exceeded 3.31 s for 9th graders and 3.11 s for seniors, resulting in a difference of 0.20 s. This implies that soccer players having lower sprint ability may drop out from the selection process as they get older. This evaluation chart can be useful for identifying the short-distance sprinting ability of soccer players in each age group.
著者
星川 佳広 村松 正隆 飯田 朝美 井伊 希美 中嶋 由晴
出版者
日本トレーニング科学会
雑誌
トレーニング科学 (ISSN:13494414)
巻号頁・発行日
vol.23, no.2, pp.153-165, 2011 (Released:2013-04-12)
参考文献数
34

本研究は男女のジュニア短距離選手において,股関節筋群の筋力と筋横断面積を調べることを目的とした.被検者は男女計45名の高校生短距離選手であった.また同年齢の長距離選手(11名)と非トレーニング群(18名)が比較のために参加した.股関節伸展・屈曲筋力(角速度3.14 , 5.23rad/s)は等速性ダイナモメータで計測し,大腰筋と大殿筋の横断面積をMRI法で求めた.短距離選手の股関節筋力は,非トレーニング群,長距離選手と比較して伸展側でより強かった.筋横断面積(体格補正値)は,女子では短距離と長距離選手で差異がなかったのに対して,男子では大腰筋,大殿筋ともに短距離選手が長距離選手よりも大きな値を示した.股関節筋力は屈曲,伸展ともに競技レベルと無関係であったが,競技レベルの高い短距離選手は,女子では大腰筋の,男子では大殿筋の横断面積が大きかった.これらの結果は,男女ともに短距離選手はジュニアにあっても股関節伸展力の高さを特徴とすること,股関節筋群の形態発育では男女で傾向が異なることが示唆された.