PURPOSE: Autonomic dysfunction of the cardiovascular system in anorexia nervosa (AN) was reported not only in the rest position, but also in the standing position in some previous studies, which might contribute to cardiac complications such as lethal arrhythmia. However, there has not been sufficient literature in this issue. Therefore, we performed a head-up tilt test, and compared the changes after tilting in indices of autonomic function between AN patients and healthy subjects by heart rate variability (HRV) and blood pressure variability (BPV). METHODS: The subjects were 21 females with AN and 30 age-matched healthy women. A head-up tilt test was performed following the protocol recommended by the American Heart Association. Blood pressure and heart rate data were collected for 10 min before and after tilting. In the frequency analysis, the powers of low-frequency (LF) and high-frequency (HF) components were calculated by a fast Fourier transformation. RESULTS: Regarding interactions between groups and head-up tilting, the head-up tilting-induced reduction of the HF component of HRV was significantly greater in the AN group. In addition, increases in the LF/HF of HRV and the LF component of BPV after head-up tilting were significantly smaller in the AN group. CONCLUSIONS: Regardless of the posture, changes in HF and LF/HF of HRV and LF of BPV in AN patients suggested the presence of autonomic insufficiency.
PURPOSE:Autonomic dysfunction of the cardiovascular system in anorexia nervosa (AN) was reported not only in the rest position, but also in the standing position in some previous studies, which might contribute to cardiac complications such as lethal arrhythmia. However, there has not been sufficient literature in this issue. Therefore, we performed a head-up tilt test, and compared the changes after tilting in indices of autonomic function between AN patients and healthy subjects by heart rate variability (HRV) and blood pressure variability (BPV). METHODS: The subjects were 21 females with AN and 30 age-matched healthy women. A head-up tilt test was performed following the protocol recommended by the American Heart Association. Blood pressure and heart rate data were collected for 10 min before and after tilting. In the frequency analysis, the powers of low-frequency (LF) and high-frequency (HF) components were calculated by a fast Fourier transformation. RESULTS: Regarding interactions between groups and head-up tilting, the head-up tilting-induced reduction of the HF component of HRV was significantly greater in the AN group. In addition, increases in the LF/HF of HRV and the LF component of BPV after head-up tilting were significantly smaller in the AN group. CONCLUSIONS: Regardless of the posture, changes in HF and LF/HF of HRV and LF of BPV in AN patients suggested the presence of autonomic insufficiency.
Authors: Berend E Westerhof; Janneke Gisolf; John M Karemaker; Karel H Wesseling; Niels H Secher; Johannes J van Lieshout Journal: Am J Physiol Heart Circ Physiol Date: 2006-07-21 Impact factor: 4.733
Authors: G Murialdo; M Casu; M Falchero; A Brugnolo; V Patrone; P F Cerro; P Ameri; G Andraghetti; L Briatore; F Copello; R Cordera; G Rodriguez; A M Ferro Journal: J Endocrinol Invest Date: 2007-05 Impact factor: 4.256
Authors: Herbert F Jelinek; Ian Spence; David J Cornforth; Mika P Tarvainen; Janice Russell Journal: Eat Weight Disord Date: 2017-02-27 Impact factor: 4.652
Authors: Zoe M Jenkins; David J Castle; Nina Eikelis; Andrea Phillipou; Gavin W Lambert; Elisabeth A Lambert Journal: Clin Auton Res Date: 2021-11-11 Impact factor: 4.435
Authors: Riccardo De Gioannis; Ann C Ewald; Darius A Gerlach; Karsten Heusser; Fabian Hoffmann; Petra Frings-Meuthen; Martina Heer; Jens Tank; Jens Jordan Journal: Clin Auton Res Date: 2022-10-05 Impact factor: 5.625
Authors: Nikola Sekaninova; Lucia Bona Olexova; Zuzana Visnovcova; Igor Ondrejka; Ingrid Tonhajzerova Journal: Int J Mol Sci Date: 2020-10-02 Impact factor: 5.923