title: Heart rate variability in junior high school students with depression and anxiety in Taiwan.
abstract: BACKGROUND
  The impact of depression and anxiety on heart rate variability (HRV) is not clear in adolescents. We hypothesised that HRV investigation in adolescents may early prevent the mental diseases occurrence.
  
  
  METHODS
  Three hundred and thirty-three seventh grade students participated in this study programme. HRV instrumental analysis and spectral with scale of depression were measured respectively.
  
  
  RESULTS
  It showed that among the participants, the depression score of female was higher than male. The population with lower depression score present with lower high frequency and higher low frequency/high frequency ratio but not statistically significant. Oppositely, participants with higher depression score were increased with heart rate and present with lower standard deviation of heart rate. However, it is also not statistically significant.
  
  
  CONCLUSIONS
  This study supported the positive relation between HRV and depression, especially in the female gender. Therefore, HRV in depression may be beneficial in the detection and prevention of mental disorder development, even suicide behaviour in teenagers.
authors.affiliation: 1 Bei-Tou Armed Forces Hospital, Taipei City, Taiwan.
authors.forename: Hsin-Te
authors.initials: HT
authors.lastname: Huang
authors.affiliation: 2 Department of Pediatrics, Taipei City Hospital-Renai Branch, Taipei City, Taiwan.
authors.forename: Kong-Sang
authors.initials: KS
authors.lastname: Wan