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発行:日本スポーツパフォーマンス学会 (Japan Society of Sports Performance Research) Online Edition: ISSN 2187-1787 
  updated 2016/6/23  
1551 Coach-player communications: An analysis of player mindset at an elite level ice hockey camp
David Elmes (National Institute of Fitness and Sport in Kanoya)

Numerous studies have devoted great attention to the importance of coach-athlete relationships (see Jowett & Cockerill, 2003; Jowett, 2005; Rhind & Jowett 2012; Philippe, Sagar, Huguet, Paquet, & Jowett, 2011). However, there appear to be no discernable studies focusing specifically on the communicative relationships between coaches and players participating in short-term sports camps. The aim of this current study was to examine the mindset of ice hockey players in an elite level short-term camp through answers given to an interview questionnaire. Twenty-seven players (16-22 years old) attending the 2013 West Coast Hockey Prep Camp were interviewed in semi-structured interviews on their reasons for attending the West Coast Hockey Prep Camp, their personal goals for the camp and hockey in general, and their expectations surrounding camp coaches and fellow participants. An inductive content analysis found that players showed a substantially high level of commitment to their sport (approx. 13.8 camps/player since they began playing hockey), a strong determination to use hockey to pursue higher education (22/27 players specified college or university either as their primary goal, or as part of their future plan for hockey), and an astute awareness of their needs development.

1602 大学バスケットボールプレーヤーにおけるトレーニング前後の認知機能,主観的疲労感,主観的運動強度,およびフリースロー成功率の関係


Effects of cognitive function, subjective fatigue, and ratings of perceived exertion on the free throw performance of university basketball players
The present study aimed at evaluating relations between cognitive function, subjective fatigue, ratings of perceived exertion (RPE), and the free throw performance of university basketball players. Participants, ten basketball players (age range: 18 - 23 years), underwent evaluation of their free throw performance, inhibitory control, and subjective fatigue before and after a 60-min basketball practice session. Inhibitory control as an index for cognitive function was evaluated by the Stroop Color and Word Test. The results indicated that the players’ free-throw performance was maintained, their inhibitory control facilitated, and subjective fatigue increased after the practice. A relative change in inhibitory control was inversely correlated with subjective fatigue and the participants’ ratings of perceived exertion. Relative changes in inhibitory control were also inversely correlated with the relative changes in their free throw performance. In conclusion, inhibitory control increased after the basketball practice session. However, an increment in fatigue was associated with a decline in inhibitory control. Free throw performance might be coupled with inhibitory control; subjective fatigue and ratings of perceived exertion appeared not to mediate free throw performance. Maintaining inhibitory control during matches might be important for players’free throw performance.
1601 エリート女子ジュニアテニスプレーヤーにおけるシングルスゲーム時の認知機能と競技パフォーマンスの関係

テニス競技において,競技関連体力(例えば,敏捷性)が高い者は高い競技パフォーマンスを発揮することが示されているが,テニスシングルスプレー時の認知機能と競技パフォーマンスの関連は明らかとなっていない.本稿では,エリート女子ジュニアテニスプレーヤー対象とした,シングルスゲーム時の認知機能の経時的変化と競技パフォーマンスの関係の一事例を報告する.対象者は全国大会ベスト8の実績を持つ14歳の女子テニスプレーヤー1名とし,シングルスゲーム時(1セット)の認知機能と競技パフォーマンスを測定した.認知機能はLocal-global Taskを用い,チェンジコート毎(2ゲーム毎)に認知処理速度・正確性および注意シフトを評価した.競技パフォーマンスは2名のテニスインストラクターの目視によりコートサイドで記録した.注意シフトとラリー中のショットのエラー,ポイント取得率に強い相関関係が認められ,注意シフトが低下したゲームにおいてショットのエラーが増大し,ポイント取得率が低下した.本研究により,シングルスゲーム時における注意シフトの低下を予防することが競技パフォーマンスの維持に寄与することが示唆された.

Relation between cognitive function and tennis performance during a singles match: elite junior female tennis player
Recent studies have demonstrated that greater physical fitness (e.g., agility) is related to higher quality tennis performance, whereas the effects of cognitive function on tennis performance are unclear. The present paper reports an analysis of the relation between cognitive function and tennis performance when an elite junior tennis player was participating in a singles match. The participant was a 14-year-old female tennis player who had advanced to the quarterfinals of the All Japan Tournament. Cognitive functions, including cognitive processing speed, accuracy, and attention shifting, were evaluated with a local-global task at every court change during the match. The player’s tennis performance was recorded by the court-side analysts (two tennis instructors). The results indicated that shifts in her attention were significantly correlated with her rate of error in shots and the total number of points won. These results suggest that greater attention shifting may be related to higher quality tennis performance, and that improved attention shifting ability during a singles tennis match may have been an important factor in the higher quality tennis-specific performance of this elite junior female player.
1545 大学水泳部における映像・分析サポートの実践


Imagery and analysis support for a university swimming club
The present study proposed a support method using imagery and analysis for a university swimming club, and examined the effectiveness and possible future improvements of this method based on reactions from coaches and swimmers. The support method proposed here might be applicable to other types of teams, because it does not require use of specific systems or equipment; rather, what it uses, such as cloud service, smart phones, and spread sheet software, is generally available. Also, in response to a request from a coach, remote support using the cloud during competitions was tried. Favorable reactions to the imagery and analysis support were obtained. The information supplied was used often in both training and competitions, and swimmers reported that they felt that its contribution to the improvement of their competitive power meant that the support had been an effective way of improving their competitive power. The imagery and analysis support method may be applicable to other teams and other types of support, and may be a good reference for communication about the use of information technology in sports.
1544 セーリング競技におけるハイクアウトテストと体力要因との関係
石井泰光(国立スポーツ科学センター), 榮樂洋光(鹿屋体育大学), 布野泰志(鹿屋体育大学), 萩原正大(国立スポーツ科学センター), 中村夏実(鹿屋体育大学)

本研究では, 年齢および競技レベルの異なるセーリング競技選手を対象に, ハイクアウトの持続時間を規定する体力要因を明らかにすることを目的とした. 対象は, セーリング競技を行っている男性44名, 女性20名であった. 体力測定は, 18歳未満のシングルハンド群に対しては, ハイクアウトテスト, 20mシャトルラン, 握力, 腕立て伏せ, 懸垂, 上体起こしテスト, ウォールシットを実施した. 上記のテストに加えて, 18歳以上のシングルハンドおよびダブルハンド群では, 等尺性膝伸展筋力, ウインゲートテスト(30秒), 30秒間上体起こしテストを実施した. ハイクアウトテストは, ハイクアウトベンチ上で膝関節, 股関節を等尺性収縮に保って行わせた. ハイクアウトの姿勢は, ベンチの端に大腿部中央が接するようにして, 肩の高さが膝の高さと同じになるようにした. 18歳未満のシングルハンド, 18歳以上のシングルハンド, 18歳以上のダブルハンドの間に, ハイクアウトの持続時間には差が認められなかった. 一方, 男女関わらず, 国際レベルは, 国内レベルに比べて, ハイクアウトの持続時間が有意に長いことが認められた. ハイクアウトの持続時間は, 20mシャトルランの間と上体起こしテスト(男性のみ)に有意な相関関係が認められた. 有酸素性作業能力は, ハイクアウトの持続時間を規定する体力要因であることが明らかになった. しかし, 先行研究において, ハイクアウトの持続能力と関連性が認められている等尺性膝伸展筋力との間には有意な相関関係が認められなかった. これらの結果から. 本研究で考案したハイクアウトテストは, セーリング競技におけるハイクアウトの持続能力を評価できることが示唆された.

Relationship of the hike-out test to physical factors in sailing
The present study examined some physical factors involved in the hike-out duration of sailors differing in age and experience. The participants were 44 men and 20 women sailors who were competing in a sailing race. Measurements of the physical fitness of participants in the single hand group who were under 18 years old included a hike-out test, a 20-meter shuttle run, grip strength, push-ups, chin-ups, trunk curl-ups, and a wall-sit test. For the single hand and double hand groups of participants who were over 18 years old, isometric knee extension strength, a Wingate test (30 seconds), and 30-second sit-ups were added. Hike-out tests were conducted on a hike-out bench, keeping an isometric extension of the knees and hips. The goal for the hike-out posture was to keep the center of the thigh at the end of the bench, and keep the height of the shoulders at knee height. No differences were found in hike-out duration between the single hand under-18-years-old group, the single hand above-18-years-old group, and the double hand above-18-years-old group. On the other hand, regardless of gender, the hike-out duration at the international level was significantly longer than at the domestic level. The correlations of hike-out duration with the 20-meter shuttle run and the trunk curl-up test (for men only) results were significant. Aerobic endurance capacity was judged to be a physical factor for defining hike-out duration. In contrast, a significant correlation of hike-out duration with isometric knee extension strength, which had been reported in previous studies, was not observed. The present results suggest that the hike-out test proposed here may be a useful method for evaluating hike-out duration in sailing.
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