Bibliographic Details
| Title: |
Validation of a field technique for the measurement of energy expenditure: factorial method versus continuous respirometry. |
| Authors: |
Geissler, Catherine A., Dzumbira, Tsitsi M. O., Noor, M. Ismail |
| Source: |
American Journal of Clinical Nutrition; Nov1986, Vol. 44 Issue 5, p596-602, 7p |
| Subject Terms: |
ENERGY consumption, POWER resources, RESPIROMETERS, RESPIRATION, RESPIRATORY measurements |
| Abstract: |
The field technique for measuring daily energy expenditure, using activity diary plus short-term indirect calorimetry, was validated with a room respirometer. Eleven male and 14 female subjects spent 24-h periods in the respimometer and kept an activity diary to the nearest minute. Subsequently, the energy cost of the recorded activities was measured in duplicate, and 24-h expenditure was calculated. Over the 42 24-h measurements the mean value by the factorial field method was within 1% of that from continuous indirect calorimetry. However, the error in individual daily expenditure ranged from -17% to +25%. Correction of the error involved in using calculated BMR for the cost of sleeping resulted in a 5% mean underestimation of the daily value. The factorial method is, therefore, too inaccurate for the estimation of individual daily expenditures but provides a close estimate of the true energy expenditure for population groups. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
