This study aimed to define cardiovascular and heart rate variability (HRV) changes following head-up tilt (HUT) in children/adolescents with chronic fatigue syndrome (CFS) in comparison to age- and ...

Young, healthy soldiers (aged 18-20 years) were referred to the Sheba Medical Center for evaluation of recurrent syncope. Participants were recruited to the study between July 2002 and July 2004.