Changes in energy expenditure during the menstrual cycle

1. Eight women were studied under metabolic-ward conditions while consuming a constant diet throughout a single menstrual cycle. Basal body temperature, salivary and urinary hormone concentrations were used in monitoring the cycle and designing the study so that whole-body calorimetry for 36 h was c...

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Bibliographic Details
Published in:British journal of nutrition 1989-03, Vol.61 (2), p.187-199
Main Authors: Bisdee, J. T., James, W. P. T., Shaw, M. A.
Format: Article
Language:English
Subjects:
Adult
Basal Metabolism
Biological and medical sciences
calorimetry
energy expenditure
Energy Metabolism
Female
Follicular Phase
Fundamental and applied biological sciences. Psychology
Humans
Luteal Phase
Mammalian female genital system
Menstrual Cycle
Morphology. Physiology
sex hormones
thyroid hormones
Vertebrates: reproduction
women
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Summary:1. Eight women were studied under metabolic-ward conditions while consuming a constant diet throughout a single menstrual cycle. Basal body temperature, salivary and urinary hormone concentrations were used in monitoring the cycle and designing the study so that whole-body calorimetry for 36 h was conducted at four phases of the cycle in relation to the time of ovulation. 2. The metabolic rate during sleep showed cyclical changes, being lowest in the late follicular phase and highest in the late luteal phase. The increase amounted to 6.1 (SD 2.7)%. Energy expenditure (24 h) also increased but the change was not statistically significant (P > 0.05). Exercise efficiency did not change during the cycle. 3. There were no significant changes in plasma thyroxine, 3, 5, 3'-triiodothyronine or free 3, 5, 3'-triiodothyronine concentrations to explain the metabolic rate changes; nor did they relate to urinary luteinizing hormone, pregnanediol-3α-glucuronide or oestrone-3-glucuronide excretion rates. No link with salivary cortisol or progesterone concentrations was observed, but there was a small inverse relation between the individual increase in sleeping metabolic rate and the subjects' falling ratio of urinary oestrone-3-glucuronide: pregnanediol-3α-glucuronide.
ISSN:0007-1145
1475-2662
DOI:10.1079/BJN19890108