2 0 0 0 OA 竹刀を用いた光刺激に対する引き技動作の筋電図反応時間及び打撃動作時間の分析
1 0 0 0 OA 思春期後期の生徒における加速および全力疾走能力と各種ジャンプ力および脚筋力との関係
- 著者
- 岩竹 淳 山本 正嘉 西薗 秀嗣 川原 繁樹 北田 耕司 図子 浩二
- 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
- pp.0801310061, (Released:2008-02-01)
- 参考文献数
- 31
- 被引用文献数
- 9 2
The purpose of this study was to clarify the relationship between acceleration and maximum sprinting ability, performance in various jumping tasks, and maximum leg strength in adolescent students. Sprinting ability was evaluated in terms of 50m sprinting velocity. The jumping tasks used for performance measurement included Standing five jump, Standing triple jump, Standing long jump, Counter movement jump and Rebound jump. Maximum leg strength was measured using isometric squats in which the angle of the knee was 135 deg. The results demonstrated that students with superior sprinting ability also showed high performance in the various jumping tasks and also had higher maximum leg strength. Among the various factors that affect sprinting ability, performance in one-leg alternation jumping, performance in jumping with both legs simultaneously, and leg strength were shown to have a high correlation in that order. In addition, the influence of both legs in the simultaneous jumping task and leg strength were considered to make a large contribution to acceleration sprinting ability. Similarly, the influence of one-leg alternation jumping performance was considered to make a large contribution to maximum sprinting ability. The findings of this study are considered useful for application to health and physical education classes.
1 0 0 0 OA 疾走能力とプレス型からスイング型へのジャンプ力転移能力との関係
- 著者
- 岩竹 淳 図子 浩二 北田 耕司
- 出版者
- 石川工業高等専門学校
- 雑誌
- 基盤研究(C)
- 巻号頁・発行日
- 2012-04-01
本研究は,疾走能力とジャンプパフォーマンスとの関係について明らかにしようとし,特に立五段跳の0-3歩(プレス型ジャンプ力)および3-5歩(スイング型ジャンプ力)について着目した.実験の結果,疾走能力上位者は,プレス型およびスイング型ジャンプ力がともに高いことが示された.プレス型ジャンプ力は,垂直跳や立幅跳のパフォーマンスと強い関連を示した.スイング型ジャンプ力は,ドロップジャンプのパフォーマンスとより高い関連を示した.したがって,立五段跳パフォーマンスを高めるには,長い時間と短い時間で脚が発揮する力を向上させることが必要になる.本研究の知見は,疾走能力の改善に有益なものと考えられる.
- 著者
- 與谷 謙吾 今泉 英徳 桐本 光 北田 耕司 田巻 弘之 荻田 太 竹倉 宏明
- 出版者
- 日本生理人類学会
- 雑誌
- 日本生理人類学会誌 (ISSN:13423215)
- 巻号頁・発行日
- vol.12, no.3, pp.139-146, 2007
- 参考文献数
- 30
- 被引用文献数
- 1
Visual stimulation-reaction time and subsequent strike time in the sport of kendo were assessed using electromyographic (EMG) reaction time. Fourteen male college students (kendo athletes (n=7), non-kendo athletes (n=7)) were asked to perform a kendo strikes in response to visual stimulation from a flashing light signal. The strikes employed, the Hiki-Men (HM) and Hiki-Kote (HK), were performed using a bamboo sword, or Shinai, using both of the upper limbs as quickly as possible. The EMG signals from the right (R) and left (L) biceps brachii, the R-, and L-triceps brachii, and R-flexor carpi ulnaris muscles were recorded simultaneously together with the elbow joint angle and hitting shock signals. Total task time (TTT), pre-motor time (PMT), motor time (MT), and action time (AT) were measured for the HM and HK tasks. The photo stimulation body reaction time (BRT) was also measured. Significant strong positive correlations were observed between PMT and TTT for both HM and HK tasks (p<0.01, r=0.93-0.94). Multiple regression analysis was used to determine the contribution of each component of the model in TTT. The standardized partial regression coefficient (β) was significant (P<0.01) for MT (β=0.36-0.38), AT (β=0.49-0.56) and was highest for PMT (β=0.79-0.80). The individual time ratio for PMT, MT and AT to TTT was approximately 50%, 20% and 30%, respectively. No significant correlations were observed between BRT and TTT for the HM and HK tasks (r=-0.02, 0.16). These results suggest that PMT is the most important component contributing to the TTT, and that BRT is not correlated to the TTT in kendo strikes.
1 0 0 0 OA 水球選手の投球速度を向上させるトレーニング方法の開発
水球競技において,シュート時の投球速度は競技力を構成する重要な要因であるが,投球速度を決定する体力的要因は明らかではない.これは投球動作が多くの体力要素で構成され,複雑に関与しているためであると考えられる.本研究では,水球競技におけるシュート時の投球速度と体力特性との関係を明らかにし,投球速度に関連した体力要素を検証することを目的とした.その結果,水中での投球速度と最も関連した体力要素は水中垂直跳びであった.動作制限法の結果からも,水中での下肢の動作の貢献度が大きいことが明らかとなったことから,投球速度を向上させるためには下肢を中心とした水中トレーニングを確立する必要性があると考えられた.