sprial pass Flashcards
describe the Grip and Hand Position sprial pass
The grip on the rugby ball is crucial. Fingers are spread across the ball’s surface to maximize contact and control.
Biomechanics considers the placement of the hands, the grip pressure, and the distribution of force across the fingers.
Optimal hand positioning helps prevent the ball from slipping and allows for better control during the pass.
describe the Upper Body Mechanics in the sprial pass
The passing motion starts with the wind-up phase, where the player’s shoulders rotate in the opposite direction of the pass.
The deltoid and pectoral muscles engage to initiate the movement, generating torque through the body.
Biomechanics analyzes the coordination of upper body segments and the transfer of energy from the core to the arms.
describe the wrist snap
The wrist snap is a rapid movement that imparts the desired spin on the ball.
The wrist flexors and extensors are involved in this motion, generating angular velocity.
Biomechanics studies the timing of the wrist snap relative to the release point, affecting the ball’s spin rate.
describe the Weight Transfer and Stance
Proper weight transfer involves the sequential activation of lower body muscles, starting with the legs, moving to the hips, and finally reaching the core and upper body.
The plant foot (the front foot) provides stability and support during the pass.
Biomechanics analyzes the kinetic chain of energy transfer from the legs to the arms and its impact on the pass’s power.
describe the spin Axis and Trajectory:
The player releases the ball with a controlled spin, stabilizing its trajectory.
The axis of spin is often oriented horizontally or slightly diagonally across the ball’s surface.
Biomechanics studies how the axis of spin influences the ball’s trajectory, air resistance, and potential for curving.
describe the follow through
The follow-through involves the continuation of upper body and arm movements after the release of the ball.
The follow-through helps maintain a consistent direction for the pass and influences the amount of spin.
Biomechanics analyzes the relationship between the follow-through and the ball’s accuracy and spin rate.
describe the Aerodynamics and Magnus Effect:
The spinning ball interacts with the air, creating a pressure differential known as the Magnus effect.
The ball’s spin creates high-pressure regions on one side and low-pressure regions on the other, affecting its trajectory.
Biomechanics considers the aerodynamic forces acting on the ball, leading to curving or swerving motions.
