Dietrich, A.

anxiety problem study depression measure supine children effect symptom association heart adolescent sample reactivity internalizing problems vagal activity measurement gender vagal child research depressive model psychiatry score heart rate variability activity internalizing level disorder externalizing difference university dietrich fl exibility function hrv lf variable result variability sensitivity trail heart rate center analyses scale behavior position 0.01 supine posture netherland journal externalizing problems depressive symptoms groningen temperament barore flex sensitivity sinus arrhythmia rsa reactivity reliability finding relationship population anxiety problems posture reproducibility signi baseline table analysis value future anxiety levels relation participant preadolescent parent psychology barore shynes baroreflex sensitivity