Validity and reliability in a Flemish population of the WHO-MONICA Optional Study of Physical Activity Questionnaire. Med. Sci. Sports Exerc., Vol. 30, No. 7, pp. 1071-1075, 1998.
Purpose: This study assessed the validity and reliability of a self-administered physical activity questionnaire used in the WHO-MONICA project.
Methods: Subjects (N = 167) were physical education and physical therapy alumni. The questionnaire (MOSPA-Q) covers a 1-yr period and measures the average weekly time and energy expenditure spent in one's occupation, transport-related activities, household chores, and leisure time activities. Test-retest reliability was reported as the intra-class correlation between calculated time or energy expenditure in different questionnaire items determined from two MOSPA-Q administrations. Validity was assessed using biometrical and physiological parameters as criterion measures.
Results: Test-retest reliability ranged from 0.45 to 0.92 with the highest correlation coefficients obtained for the leisure time physical activities. The correlation between calculated daily total energy expenditure (TEE, Kcal·d−1) and lean body mass was 0.53 (P < 0.001). The correlation between energy expenditure in leisure time activities (Kcal·wk−1) and V˙O2peak was 0.44.
Conclusion: The MOSPA-Q provides a relatively valid and reliable estimate of physical activity.
Department of Human Physiology and Department of Human Biometry, Vrije Universiteit Brussel, Brussels, BELGIUM
Submitted for publication March 1997.
Accepted for publication November 1997.
Address for correspondence: Romain Meeusen, PhD, FACSM, Vrije Universiteit Brussel, Dept. Human Physiology-Building L, Pleinlaan 2, 1050 Brussels, Belgium. E-mail: firstname.lastname@example.org.