Kinematic Analysis on the Forehand Stroke of ATP Tennis Player Karen Khachanov

Chuanjia Du,Shuai Wang,Jihe Zhou,Bing Xu,Yinong Chen

doi:10.1051/matecconf/201713900003

Abstract

By using the three-dimensional video analysis method to kinematic analyze the forehand stroke technique of the ATP professional tennis player, Karen Khachanov. Exploring the action mode and characteristics from him to provide a reference for all tennis learners to improve their forehand stroke. The results show that: (1) At the end of the preparation, Karen Khachanov’s center of gravity was lower, and his body control was steady; (2) After the follow through, each joint of Karen Khachanov’s racquet arm were stretched, so the swing radius is larger. His right leg was like a support point for the next stage---drive leg and rotate hip; (3) At the swing stage, the move of his driving leg and rotating hip was full, so the whole hitting action match the principle whipping technique movement. (4) The “wiper “ style follow through was natural, coordinated, and smooth. After hitting the ball, his body of control was steady, the shoulder movement was obvious, and the hitting was fast and powerful. Conclusion: The forehand stroke of Karen Khachanov was a high quality hitting action, and it’s worthy of tennis players to learn from.

Highlights

At the moment of touching the ball, the height of Karen Khachanov’s center of gravity was 0.94m, the right shoulder joint, right elbow joint and racket-forearm angle were 62.3 °, 107.1 ° and 105.4 °. Through these data and combined with the video record we can see that: in this stroke, Karen Khachanov’s control of the starting point was appropriate, which was an important prerequisite for this stroke to complete the winning points
At the end of the backswing stage, Karen Khachanov's right shoulder, right elbow joint angle were 79.4 °, 149.5 °, racket-forearm angle was 136.8 °,that means the articulation of the joint arm was more fully and the waving radius was larger; From his hips, knees, ankles angle can be seen, Karen Khachanov's right lower limb flexion was more obviously, the right leg from the main support role for the stage of the leg to establish the basis for rotated his hips
At the end of the follow-through, Karen Khachanov's lower limb joints were still bent, the center of gravity height was 0.97m, the body control is smooth; the shoulder hip angle was 76.3 °, making full use of the torso twist generated by the moment of inertia

Summary

Introduction

The complexity is reflected in the game and the process of competitors’ game, but more reflected in the technical action sequence structure of the correctness and stability. Forehand stroke is the most frequently used technique with more than 70% usage[3]. The study of forehand stroke is important. This paper used three-dimensional video analysis method to analyze the forehand stroke of the ATP professional tennis player, Karen Khachanov. Collecting kinematic data, carry on the kinematics analysis, and explore the forehand movement mode, and the four major ways of the study to provide reference to learn forehand stroke theory

Object

Results

Analysis of the backswing stage

Conclusions

The swing stage

The follow-through stage