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The development and validation of a measure to assess desire for physical competence /

by 1978- White, Laura J.

Abstract (Summary)
THE DEVELOPMENT AND VALIDATION OF A MEASURE TO ASSESS DESIRE FOR PHYSICAL COMPETENCE Laura J. White Thesis is under the direction of W. Jack Rejeski, Ph.D., Professor of Health and Exercise Science. The purpose of the present study was to develop and validate a measure to assess desire for physical competence. From an initial pool of 46 items, 25 were selected through exploratory principle component analysis and by evaluating each item for clarity, simplicity, and content validity. One hundred and fifty-seven adults over the age of 60 (men = 53; women = 104) completed the desire for physical competence (DPC) scale as well as six other questionnaires. Results revealed that the 25 items could be reduced to two 8-item subscales: basic (DPC-B) and advanced (DPC-A). The two factors explained 70.67% of the total variance in these items. The Chronbach Alpha Internal Consistency Reliabilities of these two scales was excellent, 0.94 and 0.92, respectively. In examining the two subscales, the mean (± SD) for the DPC-B was 3.26 (± 0.85), for the DPC-A was 2.13 (± 1.05). Scores for both subscales had a possible range of 0-4. The difference between the DPC-B and DPC-A was statistically significant, t(156) = 16.67, p<0.001, with older adults scoring higher on the basic than the advanced DPC scale. Inspection of these results reveals that although the two subscales of the DPC are correlated with one another (r =0.62), there is also a substantial amount of unique variance in each subscale. Neither subscale of the DPC was influenced by social desirability (p < 0.05), providing important evidence for the discriminant validity of the viii two scales. Individuals who scored high on the DPC-A had higher scores on the physical health scale of the SF-36, had higher general desire for control, and more favorable body satisfaction than individuals scoring lower on the DPC-A. In contrast, the DPC-B subscale was positively correlated with only the SF-36; moreover, the relationship with the SF-36 was substantially lower (r =0.23) for the DPC-B than for the DPC-A (r =0.42). Neither the DPC-A nor the DPC-B were related to overall life satisfaction; however, life satisfaction was related to body satisfaction (r =0.46), desire for control (r =0.20), social desirability (r =0.19), and the SF-36 (r =0.24). The test-retest reliability coefficients for the DPC-B and DPC-A were excellent, r = 0.93 and r = 0.93, respectively. This study provides initial evidence that the DPC (basic and advanced) is both a valid and reliable measure to assess desire for physical competence. Further research is needed on the construct validity of the measure and exploring the utility of this measure as a means to better understand the disablement process. ix
Bibliographical Information:

Advisor:

School:Wake Forest University

School Location:USA - North Carolina

Source Type:Master's Thesis

Keywords:physical fitness for older people

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