What is Pronation?

For the convoluted surface or the entire convoluted structure, the concave aspect is called the internal rotation aspect, referred to as the inner side of a vortical surface.

Pronation

And are external to each other.

These are two completely different ways of exercising.

Inward rotation is like using a screwdriver to make a circular motion around the vertical axis. The right hand is retracted counterclockwise, the clockwise is outward, and the left hand is reversed. The internal rotation and external rotation of the forearm (including the wrist) are completed by the flexural ulnar joint. The flexural ulnar joint belongs to the circular column joint, so its main movement mode is rotation. In combination with table tennis technical movements, all large plate adjustments are achieved by in-spin and out-spin movements. The wrists and fingers are only fine-tuned.

Pronation

effect. You try to understand.

Internal and external rotation

Adduction is another form of joint motion. Like a pendulum clock, the swing of the hand toward the inside of the body is called adduction, and the swing of the hand toward the outside of the body is called abduction. The action of the lead shot is abduction, and the action of swinging the ball is adduction.

Internal rotation and adduction are the main aspects to be described in the technical action of the table tennis swing.

In addition to the above, joint movements also include flexion, extension, orbital movements. These methods of exercise are technical terms commonly used when describing technical movements. Of course, they involve basic knowledge in sports physiology.

Inward rotation makes the blade down

The description of human motion is unfolded in three dimensions. The frontal axis, sagittal axis, and vertical axis. The above-mentioned internal rotation (including external rotation, collectively referred to as maneuver) refers to the rotation of the joint around its vertical axis in the horizontal plane. The rotation from the front to the inside is called the rotation or pronation, and the rotation from the front to the outside is called Spin out or spin. Adduction (including abduction) is the movement of the movement link around the sagittal axis in the frontal axis, which is called adduction when it is close to the median of the human body, and abduction, otherwise.