This study was undertaken to establish the reliability of six cable tension and two dynamometric measures of muscular strength using the Hettinger Strength Chair (modified by Howell). Thirty-two college freshman males served as subjects. The strength chair was designed to prevent shoulder rotation, provide body stability, and an objective reduplication of test posture. Subjects were given three trials on each of eight measures on four different occasions. Reliability coefficients of the eight isometric measures ranged from moderately high (.74) to high (.98). A random administration of test items did not result in significant differences in reliability when compared to a standard order. Neither did the use of best scores rather than average scores result in any changes in reliability.DURING THE PAST DECADE a considerable amount of interest has arisen with respect to the basic level of muscular strength required for the efficient and effective performance of daily tasks and activities. Though extensive information exists on the nature of this basic level, valid and reliable conclusions have not been forthcoming. This indecisiveness has been generally predicated on both the weaknesses in the method of cable tensiometry measurement and in the various statistical methods employed in determining the reliability of data obtained.
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