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A COMPARATIVE STUDY OF ENERGY EXPENDITURE IN SOME COMMON DAILY ACTIVITIES OF NON‐PREGNANT AND PREGNANT CHINESE, MALAY AND INDIAN WOMEN

Twenty‐five pregnant Chinese women (11 during both second and third trimester and 14 in third trimester only) and 17 non‐pregnant Chinese women, 14 third‐trimester pregnant and 10 non‐pregnant Malay women, and 14 third‐trimester pregnant and 10 non‐pregnant Indian women were tested for energy cost during rest and under various common daily activities. It was found that the third trimester pregnant women of all three races expended significantly more energy per minute than the respective control groups during rest and in the majority of common daily activities such as sitting and reading, sitting and writing, ironing and washing small clothes. But it was also observed that the percentage increase of expenditure over resting metabolism in every activity was more in non‐pregnant controls than in pregnant women indicating that the pregnant women performed tasks in a more relaxed and economical way than the non‐pregnant controls. Eleven pregnant Chinese women expended in varying degrees more energy per minute in the third trimester pregnancy than in the second. (The body weights of the present pregnant groups were lower than the European standard.)