TENNIS GAME – THE GAME OF MOMENTUMS

Momentum measures the ‘motion content’ of an object and is based on the product of an object’s mass and velocity. For players to perform accurate strokes with high velocity, there should be an optimal combination of linear and angular momentum. The optimal combination depends on the urgency of movement, level of balance, perception of the situation and even level of confidence. With a creation of a larger momentum, greater forces and abilities are required from a hitter to decelerate to set up and execute a successful stroke

What my Doctoral Thesis Taught me: Tennis Training for the Future Champions

Coaches teach tennis from the point of “racquet-ball” rather than movement and timing. Interception has two aspects, movement towards the ball to intercept it and create an impact point. This can differ from the concept of the hitting in which player can wait for the ball to approach before the impact. Even with the perfect contact point in which the ball lands at the string bed at the sweet spot, if the momentum of the hitter’s racquet movement does not match the movement momentum of the incoming ball, the stroke will not be satisfactory in intensity and direction

SPLIT STEP AIR PHASE

One of the greatest challenges of the dynamic tennis environment is a creation of a quick and accurate decision of the physical response (movement) corresponding to the technical-tactical intentions of the opponents’ striking actions. By prioritizing the needs of high-speed reactions, expert tennis players tend to decide of the movement direction and intensity while still being above the ground, at the air phase of the split step, as proposed by Uzu et al. (2009). From there the decision of the movement intensity and direction corresponds to receiver gathering information while increasing the much-needed muscle spindle sensitivity of the leg muscles before the ground contact, moving their center of mass away towards the edges of their support base.

トレーニング中や試合中の認知的適応力を高めるための自己集中型メソッド

自己フォーカストレーニングとは、選手がある目標を達成するために必要な状況を完全に認識することを促すものです。選手は、課題を克服し、練習課題の目標を達成するために必要な自分の能力を理解している必要があります。選手は、知識だけではなく、解決や意思決定のプロセスにおける経験を振り返り、必要な時に知識を再構築するために、コーチから独立して意思決定を行う能力を備えている必要があります。

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