An association between eating disorder behaviors and autonomic dysfunction in a nonclinical population. A pilot study.

This pilot study examines the relationship between eating disorder behaviors and autonomic dysfunction in a nonclinical sample (n = 27). Baseline indices of eating disorder behaviors were evaluated via the Eating Disorder Examination-Questionnaire. Supine resting heart rate variability was assessed via electrocardiogram for a 5-min recording period. A spectral analysis was performed. High frequency power density (s2/Hz) increased as a function of heightened disordered eating behaviors. Autonomic dysfunction, as indicated by increased high frequency power density due to hypervagal activity, is associated with eating disorder behaviors. Results suggest autonomic dysfunction may exist in nonclinical eating disorder populations. Future research needs to further examine this possibility.