The purpose of this study was to examine the effects of fatigue on force application and resulting movement patterns during the performance of consecutive chin-ups. Special attention was directed toward relating any fatigue effects to upper limb strength dominance. Twenty male adult subjects each performed one trial. Each trial consisted of consecutive chin-ups. Fatigue caused changes in the movement patterns, duration of movement and force applied through the supporting hands. Throughout the performance greater vertical forces were applied through the dominant upper limb segment with the application of these forces resulting in horizontal displacement of the total body center of gravity toward the dominant hand.

The purpose of the study was to make available to physical education instructors and recreation leaders an instruction book that will serve as a guide in the following areas: 1. In the organization and conduct of the game of speedball for boys in secondary school in physical education classes or recreation groups; 2. In the teaching of speedball as a physical education or recreation activity for boys on the secondary school level.