Hirofumi Ida
Tokyo Institute of Technology
6 Papers
15 Citations
Hirofumi Ida is an academic researcher from Tokyo Institute of Technology. The author has contributed to research in topics: Anterior cruciate ligament & Forward kinematics. The author has an hindex of 4, co-authored 6 publications. Previous affiliations of Hirofumi Ida include Kanagawa Institute of Technology.
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Papers
Effects of jump and balance training on knee kinematics and electromyography of female basketball athletes during a single limb drop landing: pre-post intervention study
TL;DR: The jump and balance training program successfully increased knee flexion and hamstring activity of female athletes during landing, and has the possibility of producing partial effects to avoid the characteristic knee position observed in ACL injury, thereby preventing injury.
A study of kinematic cues and anticipatory performance in tennis using computational manipulation and computer graphics.
TL;DR: The technique for manipulating human motion with a forward kinematics calculation without violating anatomical constraints is presented and results showed that tennis players are sensitive to the motion modulation of their opponent’s racket-arm.
Recognition of tennis serve performed by a digital player: comparison among polygon, shadow, and stick-figure models.
TL;DR: The result showed that the discrimination accuracies of the experienced players were both above and below chance level depending on the modulated joint whereas those of the novices mostly remained at chance or guessing levels, which suggests that the simplified visual information can bias the perception of the motion speed toward slower.
Joint forces and torques of the upper extremity during standing smash and jumping smash in soft-tennis
Hirofumi Ida,Seiji Kusubori,Tomoko Nakamura,Kazuhiro Suda,Motonobu Ishii +4 more
- 01 Jan 2001
TL;DR: In this article, standing smash (SS) and jumping smash (JS) use the overhand swing, but are under different conditions from the viewpoint of external force, and there were no apparent differences in general temporal variations.
Measuring open space quantitatively in one-up-one-back formation during soft-tennis doubles game
Seiji Kusubori,Motonobu Ishii,Hirofumi Ida +2 more
- 25 Mar 2008
TL;DR: In this paper, the authors quantitatively define and measure the area of open space in one-up-one-back formation adopted in soft-tennis doubles game, and predict the horizontal distance of shots and define the potential areas on court as "open space" in which shots could be landed.