Physical activity monitor for recording energy expenditure in pregnancy

Acta Obstet Gynecol Scand. 2011 Aug;90(8):903-7. doi: 10.1111/j.1600-0412.2011.01172.x. Epub 2011 Jun 14.


Objective: To determine whether the energy expenditure recorded with the physical activity monitor SenseWear™ Pro(2) Armband differs from that recorded with indirect calorimetry.

Design: Cross-sectional comparison of measures of energy expenditure.

Setting: A convenient sample recruited from a randomized controlled trial.

Population: Twenty-nine pregnant women (24-43 years old).

Methods: Energy expenditure was recorded with SenseWear™ Pro(2) Armband and a portable oxygen analyzer for 90 minutes while carrying out a variety of activities of different intensities.

Main outcome measures: Energy expenditure recorded with the physical activity monitor SenseWear™ Pro(2) Armband.

Results: Comparing energy expenditure during free-living activities, the mean differences and limits of agreements from Bland-Altman plots was -136±343 kJ, giving an underestimation of energy expenditure by 9%. The intraclass correlation coefficient was 0.85 (95% confidence interval 0.71-0.93; p<0.001), giving 85% of the variance explained by differences among individuals.

Conclusions: SenseWear™ Pro(2) Armband is a valid measure of energy expenditure during pregnancy.

MeSH terms

  • Adult
  • Calorimetry, Indirect
  • Energy Metabolism / physiology*
  • Female
  • Humans
  • Monitoring, Ambulatory
  • Motor Activity / physiology*
  • Pregnancy / physiology*
  • Randomized Controlled Trials as Topic