The validity and reliability of occupational physical activity data from survey instruments were determined in 75 men and women (age 23 to 59 years) in white-collar jobs. Data were validated against measures of cardiorespiratory fitness, body fatness, motion detection, pulmonary function, and 12 days of occupational physical activity records. More than 90% of occupational physical activity was spent in light-intensity sitting, standing, and walking. Test-retest reliability was high for most occupational questions (r ≥.63, P <.05). Correlation coefficients between questionnaire data and validation criteria that reflect heavy-intensity physical activity were low (r <.17, P >.05). The modified Tecumseh Occupational Questionnaire and Seven-Day Recall, which classified occupational physical activity in hours per week worked and average level of ratio of associated metabolic rate for a specific activity divided by the resting metabolic rate, on the job, correlated best with physical activity records (r =.11 to.47). Validation of these selfadministered questionnaires in populations with a greater diversity of jobs and occupational energy requirements is needed.
|Original language||English (US)|
|Number of pages||11|
|Journal||Journal of Occupational Medicine|
|State||Published - Oct 1993|