Exercising pectoral muscles and triceps brachii produces different exercise effects.
1 grip distance selection: narrow grip has great stimulation to triceps brachii; A wide grip greatly stimulates the chest muscles.
2 Selection of upper body angle: The focus is on the upper body of triceps brachii, and the body should be slightly backward, so that the hands can
The arm completes the action behind the body; Focus on chest muscles and lean forward.
3 Angle between upper arm and trunk: It is advisable to clamp triceps muscle, and don't open it when you put it down.
The arms are parallel; Focus on practicing chest muscles, and you can stretch them out when you lower them.
Action process: In the supporting stage, the force on the pectoral muscle and triceps brachii accounts for a large proportion of the total load.
Without it, different body posture changes such as grip distance, inclination angle and included angle will make the pectoral muscle and humerus three heads.
At present, the corresponding changes of muscle stress have not been defined in detail.
Research results!