Development and initial psychometric evaluation of a scale measuring factors related to motivation for exercise.

Abstract

Background. This thesis was guided by a series of research objectives, which were to: examine the literature to identify motivational factors for regular vigorous physical activity; draft an instrument that measures these motivational factors and pre-test it; conduct additional testing into how the items and instruction sets of the instrument were being understood; conduct an initial evaluation of the content, criterion-related, and construct validity of the instrument; and to assess the internal consistency and test-retest reliability of the instrument. Methods. (1) Instrument: Following scale development work, the final scale comprised 82-items that were scored on a five-point type scale, measuring the following fifteen sub-scales: Affect, Attitude, Affiliation, Barriers, Goals, Outcome expectancy, personal Normative Beliefs (PNB), Rewards, Self-determination, Self-efficacy, Self-evaluation, Self-presentation, Social comparison, Social support, Time. (2) Procedure: This cross-sectional study was conducted using a non-probability sample recruited from several private and governmental worksites or organizations. (Abstract shortened by UMI.)