title: Heart rate and sleep time: their relationship with growth and adiposity in male infants.
abstract: In a clinical trial based on the direct relationship between heart rate activity and energy expenditure during awake and asleep states, 21 healthy 18-month-old infants had their heart rate monitored over a period of 24 h and correlated with their nutritional intake, growth parameters, and measurements of adiposity (fat cell size and skinfold thickness). Infants with higher 24-h and asleep heart rates had smaller fat cells (r = -0.50) and skinfold thickness (abdominal r = -0.70, suprailiac r = -0.80, triceps r = -0.67). Infants with higher relative weight had higher heart rates during awake periods (r = 0.60). Infants sleeping for longer periods had higher weight gain velocity from birth (r = 0.51) and higher relative weight (r = 0.54). This study demonstrates the heart rate activity and duration of sleep are related to growth and adipose tissue deposition during infancy.
mesh_terms: D000273:Adipose Tissue / Q000502:physiology*; D001835:Body Weight; D004040:Dietary Carbohydrates / Q000008:administration & dosage; D002149:Energy Intake; D006128:Growth; D006339:Heart Rate; D006801:Humans; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D008297:Male; D012885:Skinfold Thickness; D012890:Sleep / Q000502:physiology*; D013997:Time Factors
chemical_list: D004040:Dietary Carbohydrates