Serratus Anterior is a muscle that keeps the shoulder blade from protruding, winging. It should be active when you do a bench press by preventing the shoulder blade to press down in the seat, winging out. It's very important for keeping the shoulder fixated and stable.

Endurance (also called sufferance) is the ability for a person to exert himself for a long period of time. In humans, it is usually used in aerobic or anaerobic exercise. The definition of 'long' varies according to the type of exertion - minutes for high intensity anaerobic exercise, hours or days for low intensity. Training for endurance can have a negative impact on the ability to exert strength unless an individual also undertakes resistance training to counteract this effect

The distance between your legs on your board or in a squad. A good stance is normally a little wider than your hips. But if you like a wide stance on your kiteboard, you should use a wider stance in your exercises also.

Dislocation. Ex Patellar Subluxation is dislocation of the knee cap, tracking of the knee cap

The muscles that stabilize the shoulder. Infraspinatus, teres minor, subscapularis, supraspinatus are small stabilazer muscles that pulls the shoulder in and down. The deltoid muscles pulls the shoulder up and thereby makes it stable.

The muscles that stabilize the shoulder. Infraspinatus, teres minor, subscapularis, supraspinatus are small stabilazer muscles that pulls the shoulder in and down. The deltoid muscles pulls the shoulder up and thereby makes it stable.