Direct measurement of the energy expenditure of physical activity in preterm infants

Journal of Applied Physiology
P J ThureenW W Hay

Abstract

The energy cost of physical activity (EEA) has been estimated to account for 5-17% of total energy expenditure (TEE) in neonates. To directly measure EEA, a force plate was developed and validated to measure work outputs ranging from 0.3 to 40 kcal . kg-1 . day-1. By use of this force plate plus indirect calorimetry, TEE and EEA were measured and correlated with five activity states in 24 infants with gestational age of 31.6 +/- 0.5 (SE) wk and postnatal age of 24.8 +/- 3.7 days. TEE and EEA were 69.2 +/- 1.5 and 2.4 +/- 0.2 kcal . kg-1 . day-1, respectively. EEA per state was 0.5 +/- 0.0 (quiet sleep), 2.4 +/- 0.2 (active sleep), 2.8 +/- 0.4 (quiet awake), 7.5 +/- 0.8 (active awake), and 15.1 +/- 2.3 (crying) kcal . kg-1 . day-1. This provides the first direct measurement of the contribution of physical activity to TEE in preterm infants and will enable measurement of caloric expenditure from muscle activity in various disease conditions and development of nursing strategies to minimize unnecessary energy losses.

References

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Citations

Jul 30, 2015·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·S J StreetA P Hills
Jun 27, 2017·NPJ Systems Biology and Applications·Avlant NilssonJens Nielsen
Dec 8, 2004·Biological Research for Nursing·Karen PridhamMatthew O'Brien
Feb 23, 2007·Journal of Perinatal Medicine·Maria E L MoreiraJose M A Lopes
May 23, 2006·The Journal of Perinatal & Neonatal Nursing·Shyang-Yun Pamela K Shiao
Oct 9, 2009·The American Journal of Clinical Nutrition·Jacqueline BauerJoachim Gerss
Mar 19, 2009·Journal of Perinatal Medicine·Jacqueline BauerGeorg Hoffmann
Jan 19, 2012·PloS One·Blandine de Lauzon-GuillainKen K Ong

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