Brigham, Robert J.
M.S. Ed. (Master of Education)
Department of Physical Education
Two program of isometric exercises were compared to determine which was more effective in improving muscular strength. The study was conducted with one experimental group using one isometric contraction per exercise of six seconds duration. The other experimental group executed three contractions per exercise of six seconds duration. The experiment was conducted for a period of four weeks with ten subjects participating In each of the two groups. The students were selected from the 1964 summer school classes of the Physical Education Department at Northern Illinois University. Kraus Weber "Abdominal minus psoas" test and Mc Cloy's arm strength test, were administered to the subjects at the first and last meetings of the experiment. The data was gathered from the performance scores made on the two strength tests. The results indicated no significant increase of strength between the two programs of isometric exercises. There was a significant increase in strength within each isometric repetition group.
Kranz, Alfred Clarence, "A comparative investigation of the effectiveness of three isometric contractions and one isometric contraction for a certain selected muscle group" (1964). Graduate Research Theses & Dissertations. 104.
Northern Illinois University
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