J. O. Jackson

Publication Date


Document Type


First Advisor

Wells, Harold P., -1996

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Physical Education




Purpose. The purpose of this study was to determine if lateral speed of pulling linemen would be affected by the placement of weight on the hand when the subject was in a three-point stance. The experiment was designed to test the speed of subjects pulling from a three-point stance with no weight on the hand and. also from a three-point stance with weight distributed on the hand. Procedures. Thirty boys from a Junior college freshman physical education class were selected as subjects for the experiment. Testing equipment consisted of an Athletic Sports Analyzer that measured elapsed time in hundredths of seconds. The tests were administered in a gymnasium with the subjects wearing a regulation Junior college physical education uniform consisting of shorts, T-shirt and rubber sole gym shoes. The subjects were given a fifty-minute period of instruction on the two stances they were to use. There was no extended period of time for practice. To obtain final data, the subjects were tested in the two stances, pulling laterally both right and left for a distance of four yards. Three trials were timed for each direction of lateral movement from the two stances. The fastest of the three trials from each stance and both directions of pulling was recorded, giving each subject a total of four individual scores. A summation was made of the fastest trials from each tested position and a group mean was then determined. Since the data consisted of two sets of measurements on the same individuals, it was necessary to perform a t test for correlated data using the "difference method". Findings and Conclusions. After analyzing data obtained from the testing procedures, the mean score for pulling left with weight on the hand was 1.52 seconds, compared to a mean of 1.46 seconds when pulling to the left with no weight on the hand. Pulling to the right with weight on the hand produced a mean score of 1*50 seconds. A mean of 1.47 seconds was found when pulling right with no weight on the hand. A t test for correlated data clearly shows both t ratios to be statistically significant.


Includes bibliographical references (pages 33-34)


iii, 34 pages




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