Table 2 The vault parameters about jumping ground reaction force.
From: Run-up velocity and jumping ground reaction force of Chinese female gymnasts
Related body angle (°) | Definition |
|---|---|
Hip joint angle | The angle was measured between the line joining the axes of the ankle and hip joints and the line joining the hip and glenohumeral joints. This measurement was taken at the moment when the athlete’s trunk (the line connecting the axes of the glenohumeral and hip joints) was in a parallel position to the ground |
Knee angle | The posterior angle is formed by the line connecting the centres of the hip, knee, and ankle joints on the same side |
Trunk-to-ground angle | The posterior angle between the perineum point and a line connecting the spinous processes of the seventh cervical vertebrae. This measurement was taken at the moment when the athlete’s feet touch the springboard, and the trunk is in a parallel position to the ground |
Landing angle | At the moment when the gymnast’s feet make contact with the springboard, the body’s centre of gravity and the point of force from the feet align with the posterior angle of the horizontal plane |
Take-off angle | The centre of gravity of the body and the point of force at the gymnast’s feet are connected to the front angle of the horizontal plane at the moment when their feet take off the springboard |
