GB/T 34285-2017Guidelines of exercise injury-precaution in fitness (English PDF)

2.1 Range of motion

Movement, the body or body part of the movement from the beginning to the end of the movement distance or angle.

2.2 Joint

Where bone is connected to bone.

Note. The structure of the joint can be divided into two parts. the main structure and the auxiliary structure. The main structure includes the articular surface, joint capsule and joint cavity; auxiliary structures include the toughness

Belt, articular cartilage and joint lip and so on.

2.3 Movement segment movesegment

Some part of the limb that rotates around the articulation axis.

2.4 Range of motion for joint

A motion from the beginning to the end of a joint at the movement between the two segments of the limit of motion angle.

2.5 Torsionalamplitude

The range of motion or angle of reverse rotation of the shoulder and hip axes relative to the longitudinal axis of the trunk as the body completes the motion.

2.6 Stretch amplitude

The amount of muscular elongation that a certain muscle activity in the body starts to end.

2.7 Exercise intensity

Distance or speed of movement per unit of time, or work done per muscle unit time.

2.8 Shoulder flexor

The upper arm moves from posterior to posterior.

2.9 Shoulder extension

The upper arm moves forward and backward at the shoulder joint.