INTRODUCTION

Examining the different muscle groups involved in the overhand pull-up and behind the neck overhand pull-up along with examining the different muscle groups, we will explore which technique involves the largest range of motion and longest peak flexion time. Taking into account these different factors will give us a more detailed look at each of the pull-ups, allowing us to select the better of the two for more strength gains.

Since the pull-up is frequently used for a test of muscular strength, as well as for training regimens, it is important to know which style of pull-up, that is the overhand or behind the neck overhand pull-up, is more efficient in strength gains. Studying these motions is also important due to the fact that "pull-up like exercises may be more efficacious when performing such important activities of daily livingÉ" (Antinori et al., 1988).

We will observe joint motions and then deduce which muscle groups are involved in controlling the motions. Then we will quantify the range of motion and the timing of the motion in the shoulder joint, elbow joint, and the acromion process. Using this information we will decide which pull-up is "better" by evaluating the time spent in flexion during each movement, as well as the greatest flexion achieved in each.