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Ann Epidemiol. 2004 Jul;14(6):409-15.

Comparison of the college alumnus questionnaire physical activity index with objective monitoring.

Author information

  • 1Department of Health and Exercise Science, The University of Tennessee, Knoxville, TN, USA. sstrath@uwm.edu

Abstract

PURPOSE:

Two methods of measuring physical activity (PA) were compared over a consecutive 7-day period among 25 adults (12 men and 13 women).

METHODS:

Each day estimates of energy expended in light, moderate, vigorous, and total PA were derived from the simultaneous heart-rate motion sensor (HR+M) technique. At the end of the 7-day period participants completed the College Alumnus Questionnaire Physical Activity Index (CAQ-PAI) and results were compared with HR+M technique estimates.

RESULTS:

Correlations between the two methods in the four activity categories ranged from r=0.20 to r=0.47, with vigorous and total PA showing higher associations than light and moderate PA. Mean levels of PA (MET-minxwk(-1)) obtained using the two methods were similar in the moderate and vigorous categories, but individual differences were large. Energy expended in light PA was significantly underestimated on the CAQ-PAI, resulting in lower total activity scores on this questionnaire as compared with the HR+M.

CONCLUSIONS:

The CAQ-PAI accurately reflected mean moderate and vigorous activity in comparison with the HR+M technique. The results are consistent with other studies which have shown that physical activity questionnaires are better at assessing vigorous PA than ubiquitous light-moderate activities.

PMID:
15246329
[PubMed - indexed for MEDLINE]
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