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Updated: Jul 19, 2026
07:46
Using the Activity-based Anorexia Rodent Model to Study the Neurobiological Basis of Anorexia Nervosa
Published on: October 22, 2015
Changes in heart rate with refeeding in anorexia nervosa: a pilot study
Nahoko Miyasaka Yoshida1, Kazuhiro Yoshiuchi, Hiroaki Kumano
1Department of Psychosomatic Medicine, Graduate School of Medicine, University of Tokyo, Tokyo, Japan. napo@waseda.jp
Journal of Psychosomatic Research
|October 3, 2006
Summary
Refeeding in anorexia nervosa patients significantly increased heart rate and was linked to autonomic nervous system activity. Changes in sympathetic activity correlated with RR interval, suggesting hormonal shifts influence recovery.
Area of Science:
- Endocrinology
- Autonomic Nervous System Function
- Cardiovascular Physiology
Background:
- Anorexia nervosa (AN) is associated with significant physiological dysregulation.
- Refeeding is a critical intervention, but its impact on autonomic and endocrine systems requires further elucidation.
Purpose of the Study:
- To investigate heart rate changes before and after refeeding in female AN patients.
- To identify associations between autonomic activity, endocrine function, and heart rate alterations during refeeding.
Main Methods:
- Measurements included body weight, RR interval (RRI), heart rate variability, endocrine markers, and energy expenditure.
- Data collected pre- and post-refeeding in nine female AN patients.
Main Results:
- Mean daytime heart rate increased significantly post-refeeding (54.9 to 69.4 bpm).
- Changes in sympathetic activity negatively correlated with RRI changes (r=-.933).
- Urine C-peptide, IGF-1, and free T3 (fT3) increased; norepinephrine showed a trend toward increase.
Conclusions:
- Autonomic nervous system activity plays a role in heart rate regulation during refeeding in AN.
- Increased insulin secretion, thyroid function, and IGF-1 are implicated as mechanisms driving these physiological changes.
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