Accomplishing this goal required knowledge of the shoulder's range of motion as well as the forces it is capable of generating in each direction, which led to our second goal, the quantification of the shoulder's range of motion and measurement of the forces the shoulder can comfortably generate at the point of the acromion process
The landmarks consisted of: forehead, side of the head (right/left), C7 spinous process, acromion process
(right/left), sacrum, ASIS (right/left), lateral condyle of humerus (right/left), styloid process of ulnar (right/left), greater trochanter (right/left), lateral condyle of femur (right/left), medial condyle of femur (right/left) toe of the foot (right/left), heel of the foot (right/left), lateral malleolus (right/left), medial malleolus (right/left), at the head of the golf club, on the shaft of the golf club (at 10 cm and 70 cm proximal from the distal end of the shaft).
Sixteen markers were placed on the right and left superior aspects of the scapular acromion process
, styloid process of ulna, ulnar styloid, proximal interphalangeal joint of the third finger, greater trochanter, later condyle of the tibia, lateral maleolus, and fifth metatarsal according to Dempsters' segment parameters (Winter, 2005).