Convergent Validity of Self Reported Physical Activity with a Seven Day Recall

<p>Accurate assessment of physical activity is important to studies interested in the relationship between physical activity and other variables. Questionnaires are the only feasible means for large-scale sampling but such self-report measures require validation due to their inherent subjectivity. The Adventist Health Study-2 (AHS-2) survey includes exercise items that were validated in the present investigation. A calibration study examined self-reports of exercise with two phone calls to 1,000 participants in which an interview-assisted 7-day physical activity recall was completed by a random sample of AHS-2 participants. Inter-index correlations both within the survey and between the survey and the 7-day physical activity recall were examined to offer convergent and discriminant validity. Finally, clinical data used to diagnose metabolic syndrome provided a third means of validation by demonstrating an inverse association with physical activity. Weak to strong correlations between the AHS-2 items and the 7-day recall, test-retest reliability, factor analysis, and metabolic syndrome data indicated that the questionnaire possessed an adequate level of validity.</p>

Name thesis:degree_name

Master of Arts (MA)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Psychology

Year

2010

Author dc:creator

• Silber, Benjamin J.

Contributors dc:contributor

• Kelly R. Morton
• Gary E. Fraser
• Jason E. Owen

• Exercise Science
• Psychology
• Physical Fitness; Exercise Therapy -- instrumentation; Directly Observed Therapy -- instrumentation; Metabolic Syndrome X -- physiology; Health Behavior -- psychology; Mental Recall; Patient Compliance; Task Performance and Analysis.

Statement dc:rights

• This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Language dc:language

English

Repository record dc:identifier

https://scholarsrepository.llu.edu/etd/775

OAI identifier oai:identifier

oai:scholarsrepository.llu.edu:etd-1877