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close this bookChronic Energy Deficiency : Consequences and Related Issues (International Dietary Energy Consultative Group - IDECG, 1987, 201 pages)
close this folderThe energy requirements of pregnancy and lactation
close this folder3. Methodology
View the document3.1. Selection of subjects
View the document3.2. Body weight and body fat
View the document3.3. Energy intake
View the document3.4. Basal metabolic rate (BMR)
View the document3.5. Standardized exercise test
View the document3.6. Normal daily activity pattern
View the document3.7. Daily energy expenditure
View the document3.8. Frequency of measurements

3.5. Standardized exercise test

This was carried out by having each woman, except in the Philippines, walk at a fixed pace on a treadmill. The rate was 3.8 km/h on a level gradient for the women in Scotland, in Holland and in The Gambia, and 3.0 km/h for the women in Thailand and in the Philippines. After one or more initial periods to allow the woman to become accustomed to the exercise, there was a 3-minute "run-in" period when she breathed through the mouthpiece valve before collection of expired air was begun. This was done into a Douglas Bag for two separate 10-minute periods. Analyses were done as for the BMR. A variation of more than 5% between samples meant that a third measurement was done. The mean of all the readings was taken as the exercise metabolic rate.