Data from: Validation of the Regicor short physical activity questionnaire for the adult population

Objective: To develop and validate a short questionnaire to estimate
physical activity (PA) practice and sedentary behavior for the adult
population. Methods: The short questionnaire was developed using data from
a cross-sectional population-based survey (n=6352) that included the
Minnesota leisure-time PA questionnaire. Activities that explained a
significant proportion of the variability of population PA practice were
identified. Validation of the short questionnaire included a
cross-sectional component to assess validity with respect to the data
collected by accelerometers and a longitudinal component to assess
reliability and sensitivity to detect changes (n=114, aged 35 to 74
years). Results: Six types of activities that accounted for 87% of
population variability in PA estimated with the Minnesota questionnaire
were selected. The short questionnaire estimates energy expenditure in
total PA and by intensity (light, moderate, vigorous), and includes 2
questions about sedentary behavior and a question about occupational PA.
The short questionnaire showed high reliability, with intraclass
correlation coefficients ranging between 0.79 to 0.95. The Spearman
correlation coefficients between estimated energy expenditure obtained
with the questionnaire and the number of steps detected by the
accelerometer were as follows: 0.36 for total PA, 0.40 for moderate
intensity, and 0.26 for vigorous intensity. The questionnaire was
sensitive to detect changes in moderate and vigorous PA (correlation
coefficients ranging from 0.26 to 0.34). Conclusion: The REGICOR short
questionnaire is reliable, valid, and sensitive to detect changes in
moderate and vigorous PA. This questionnaire could be used in daily
clinical practice and epidemiological studies.