【目的】香川県におけるスポーツ事業部は，平成18年に香川県高校野球連盟からの要請を受け，香川県理学療法士会（県士会）員の有志8名が高校野球香川大会のメディカルサポート（以下MS）に参加したことが始まりである。県内のスポーツ現場からのニーズを受け，翌年に正式な事業部として活動を始めた。スポーツ事業部の活動目的は①スポーツ現場の障害予防の一助となること，②スポーツに興味のある県士会員のスキルアップを図ること，③スポーツ現場において理学療法士の活動を啓発することであり，9年間の活動を振り返り，若干の考察を交え報告する。【活動報告】平成19年から徐々に活動は拡がり，平成26年度は高校野球と高校サッカーと中学校バスケットボールの大会でMS活動を実施した。中でも第96回全国高等学校野球選手権香川大会では50名の県士会員が参加日程を調整し，MS活動を行った。活動内容は選手のクーリングダウンストレッチ66名，アイシング18名，三角巾固定2名，テーピング5名であり，また一般の方の熱中症なども20件あり，看護師と共に対応を行い3件の救急車要請を行った。また中学校バスケットボール大会では平成23年からのMS活動の実績が評価され，県大会だけでなく香川県で開催された第44回にもMS活動で参加した。【考察】スポーツ事業部として活動を始めて8年が経つ中で，確実に信頼を高めてきた結果，活動が拡がり継続的であることは事業部の目的に沿った活動が出来ていると思われる。また県内の理学療法士養成校に高校野球出身者が多く入学していることを受け，MS活動による啓発効果の一つと思われる。しかし一方でスポーツ障害予防の観点からは，現状のみのMS活動では不十分と思われ今後の課題である。【結論】県内のスポーツ現場で理学療法士によるMS活動はニーズが高いため，更に対応できる人員確保とシステムつくりが必要である。

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This study aimed to investigate the relationship among quadriceps femoris muscle architecture, jump performance, and age in months in junior high school basketball players. Nineteen male junior high school basketball players (age, 13.7±0.7 years［168.1±9.5 months］；height, 166.3±10.3 cm；body mass, 54.3±12.6 kg；competitive career duration, 5.3±1.7 years) volunteered to participate in this study. We measured the vertical jump (VJ) and running jump heights using a single leg (RJS) or both legs (RJB). Quadriceps femoris (vastus medialis oblique［VMO］, vastus medialis［VM］, rectus femoris［RF］, vastus intermedius［VI］, vastus lateralis［VL］) muscle thickness (MT) was measured using real-time ultrasonography. The total MT of the VMO, VM, RF, VI, and VL was calculated (Total). Pennation angle (PA) was measured at the RF and VL. Images were analyzed by an image analysis software and fascicle length (FL) of the RF and VL were calculated by MT and PA. The ratio of MT to body mass^1/3（MT/BM^{1/ 3} ratio) was calculated to normalize the morphological differences. We observed a significant correlation between VJ and MT of the VMO (r＝0.558, p＝0.013), RJB and MT of the VMO, RF, Total (VMO, r＝0.538, p＝0.017；RF, r＝0.483, p＝0.036；Total, r＝0.539 p＝0.017), and between RJS and MT of the VL (r＝0.536, p＝0.018). We also observed a significant correlation between RJB and FL in VL (r＝0.569, p＝0.011). There were significant correlations between MT and MT/BM^{1/ 3} ratio in VMO and age in months (MT, r＝0.659, p＝0.002；MT/BM^{1/ 3} ratio, r＝0.511, p＝0.026). The results of the present study suggest that different parts of the quadriceps femoris muscle are related to jump performance in junior high school basketball players. When growth spurts occur during the age of junior high school student (12-15years old), VMO distal to the VM may increase specifically.

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 The purpose of this research was to clarify the structure of the momentum of basketball games as sensed by point guard players with excellent ability from the “Bewegungslehre des Sports” viewpoint in order to improve the tactical ability of basketball players. The study involved an interview survey of 3 such players. After considering the structure or the momentum of games, the following points became clear.
 1. The players are aware that “continuity” and “compulsion” form the nature of game momentum. These 2 characteristics are seen as both Good and Bad momentum.
 2. “Player's feelings” were listed as one of the facets of game momentum. As a means of optimizing such feelings, priority was given to player encouragement and selection of tactics to make the game exciting.
 3. “Play based on common tactical intention” was listed as another facet of game momentum. Games developed with such intention had the strongest possibility of winning, and the players considered that practicing it (or preventing the other team from doing so) without any difference in tactical intention created momentum.
 4. “Player's feelings” and “play based on common tactical intention”, which contribute to momentum, were considered to be not independent but interactive.
 5. As a result, it was clarified that “players' feelings” is a factor that can directly generate “game momentum” and that “game-related events” and “player's sense of value” are factors that can influence each other and are interdependently structured.

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