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See detailA meta-analysis on resting state high-frequency heart rate variability in Bulimia Nervosa
Peschel, Stephanie K.V.; Feeling, Nicole R.; Vögele, Claus UL et al

in European Eating Disorders Review (2016), 24(5), 355-365

Objective: Autonomic nervous system (ANS) function is altered in eating disorders. We aimed to quantify differences in resting state vagal activity, indexed by high-frequency heart rate variability (HF ... [more ▼]

Objective: Autonomic nervous system (ANS) function is altered in eating disorders. We aimed to quantify differences in resting state vagal activity, indexed by high-frequency heart rate variability (HF-HRV) comparing patients with bulimia nervosa (BN) and healthy controls. Methods: A systematic search of the literature to identify studies eligible for inclusion and meta-analytical methods were applied. Meta-regression was used to identify potential covariates. Results: 8 studies reporting measures of resting HF-HRV in individuals with BN (n=137) and controls (n=190) were included. Random-effects meta-analysis revealed a sizeable main effect (Z=2.22, p=.03; Hedge’s g=0.52, 95%CI[0.06;0.98]) indicating higher resting state vagal activity in individuals with BN. Meta-regression showed that BMI and medication intake are significant covariates. Discussion: Findings suggest higher vagal activity in BN at rest, particularly in un-medicated samples with lower body mass index. Potential mechanisms underlying these findings and implications for routine clinical care are discussed. [less ▲]

Detailed reference viewed: 163 (2 UL)
Full Text
Peer Reviewed
See detailA systematic review on heart rate variability in Bulimia Nervosa
Peschel, Stephanie K.V.; Feeling, Nicole R.; Vögele, Claus UL et al

in Neuroscience & Biobehavioral Reviews (2016), 63

Eating disorders are associated with alterations of the autonomic nervous system (ANS). Heart rate variability (HRV) provides a readily available index of ANS function. While ANS dysfunction indexed by ... [more ▼]

Eating disorders are associated with alterations of the autonomic nervous system (ANS). Heart rate variability (HRV) provides a readily available index of ANS function. While ANS dysfunction indexed by HRV in Anorexia Nervosa has been addressed in previous reviews, here we aimed to review the current evidence on HRV in Bulimia Nervosa (BN). A systematic literature search in Web of Science, PsycInfo, Scopus, and PubMed identified 17 studies reporting HRV in patients with BN. Studies described (i) differences in resting state HRV in patients with BN compared to controls, (ii) alterations in the stress response in BN indexed by HRV, and (iii) treatment effects on HRV in patients with BN. Despite a number of conflicting results, we conclude that BN is characterized by increased resting state vagally-mediated HRV and an impaired stress-response. Intervention-studies suggest that altered ANS-activity in BN is at least partially reversible. Future studies on the complex relation between BN and HRV should investigate the effect of comorbid disorders, subtypes of BN, and mechanisms affecting treatment outcome. [less ▲]

Detailed reference viewed: 156 (4 UL)