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Int J Environ Res Public Health. 2011 Sep;8(9):3810-20. doi: 10.3390/ijerph8093810. Epub 2011 Sep 23.

Convergent validity of the Arab Teens Lifestyle Study (ATLS) physical activity questionnaire.

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  • 1Exercise Physiology Laboratory, Department of Physical Education and Movement Sciences, College of Education, King Saud University, P.O. Box 2458, Riyadh, 11451, Saudi Arabia. alhazzaa@ksu.edu.sa

Abstract

The Arab Teens Lifestyle Study (ATLS) is a multicenter project for assessing the lifestyle habits of Arab adolescents. This study reports on the convergent validity of the physical activity questionnaire used in ATLS against an electronic pedometer. Participants were 39 males and 36 females randomly selected from secondary schools, with a mean age of 16.1 ± 1.1 years. ATLS self-reported questionnaire was validated against the electronic pedometer for three consecutive weekdays. Mean steps counts were 6,866 ± 3,854 steps/day with no significant gender difference observed. Questionnaire results showed no significant gender differences in time spent on total or moderate-intensity activities. However, males spent significantly more time than females on vigorous-intensity activity. The correlation of steps counts with total time spent on all activities by the questionnaire was 0.369. Relationship of steps counts was higher with vigorous-intensity (r = 0.338) than with moderate-intensity activity (r = 0.265). Pedometer steps counts showed higher correlations with time spent on walking (r = 0.350) and jogging (r = 0.383) than with the time spent on other activities. Active participants, based on pedometer assessment, were also most active by the questionnaire. It appears that ATLS questionnaire is a valid instrument for assessing habitual physical activity among Arab adolescents.

KEYWORDS:

Arab Teens Lifestyle Study; pedometer; questionnaire; validity

PMID:
22016718
[PubMed - indexed for MEDLINE]
PMCID:
PMC3194119
Free PMC Article
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