Does motor activity during psychophysiological paradigms confound the quantification and interpretation of heart rate and heart rate variability measures in young children?

@article{Porges2007DoesMA,
  title={Does motor activity during psychophysiological paradigms confound the quantification and interpretation of heart rate and heart rate variability measures in young children?},
  author={Stephen Porges and Keri J. Heilman and Olga V. Bazhenova and Elgiz Bal and Jane A Doussard-Roosevelt and Myriah Koledin},
  journal={Developmental psychobiology},
  year={2007},
  volume={49 5},
  pages={485-94}
}
Respiratory sinus arrhythmia (RSA), heart period, and motor activity were monitored in preschoolers during a variety of tasks varying in required movement. The data analyses indicate: (1) that when activity increases during tasks, there are synchronous decreases in heart period and RSA; (2) that correlations between changes in RSA and heart period are related to activity only during exercise when there is a major demand for increased metabolic resources; and (3) that the covariation among the… CONTINUE READING