The effect of isometric muscle training on the strength and endurance of junior secondary school boys

The effect of isometric muscle training on the strength and endurance of junior secondary school boys in tests of trunk flexion was investigated. A group of fifty-one boys was tested for trunk flexor strength by the cable-tensiometer, and for endurance by a sixty-second sit-up test and then matched on the basis of strength scores. The matched subjects were then randomly divided into two groups. One group performed a single, six-second, maximal, isometric trunk flexion exercise five days a week for five weeks, while the other group did not. At the end of the five week training period the two groups were retested for strength and endurance. From the statistical treatment of the data it was concluded (1) that there were significant mean increases in performance in the strength and endurance tests by the isometric muscle training group and the control group, and (2) that there was no significant difference between the gains in strength and endurance made by the training group and the gains in strength and endurance made by the control group.Education, Faculty ofGraduat