Figure 1.

Placement of reflective markers on the bony anatomic landmarks. Abbreviations: C7, cervical vertebra 7; T4, thoracic vertebra 4; AC, acromion process; U, upper point; M, middle point; P, lower point; ME, medial epicondyle of the elbow; LE, lateral epicondyle of the elbow; RST, radial styloid process; UST, ulnar styloid process; and MTC3, third metacarpal bone. Reprinted with permission from Chou PPH, Hsu HH, Chen SK, Yang SK, Kuo CM, Chou YL. Effect of push-up speed on elbow joint loading. J Med Biol Eng. 2011;31(3):161–168.