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Controlled Clinical Trial
, 15, 167

Eurythmy Therapy Increases Specific Oscillations of Heart Rate Variability

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Controlled Clinical Trial

Eurythmy Therapy Increases Specific Oscillations of Heart Rate Variability

Friedrich Edelhäuser et al. BMC Complement Altern Med.

Abstract

Background: Mind-body therapies are beneficial for several diseases (e.g. chronic pain, arterial hypertension, mood disorders). Eurythmy therapy (EYT) is a mind-body therapy from Anthroposophic Medicine. In each EYT exercise a short sequence of body movements and simultaneous guided imagery is repeated several times. In this study, the simultaneous effects of two different EYT exercises on cardiac autonomic regulation as assessed by spectral analysis of heart rate variability (HRV) were investigated.

Methods: Twenty healthy subjects (age: 29.1 ± 9.3 years, 13 female) performed two different EYT exercises (EYT-A and EYT-B) for 8 min. Each EYT exercise was compared against two matched control exercises: control exercise 1 (CE1-A and CE1-B) consisted of a repetition of the body movements of the EYT exercise but without guided imagery, control exercise 2 consisted of walking on the spot (CE2-A and CE2-B). Spectral power of HRV during each exercise was quantified on the basis of Holter ECG recordings.

Results: During EYT-A the frequency of the peak oscillation in the very low frequency (VLF) band matched the repetition rate of the sequence of body movements (0.02 Hz). Low frequency (LF) oscillations were augmented when compared to the control exercises (EYT-A: 7.31 ± 0.84, CE1-A: 6.98 ± 0.90, CE2-A: 6.52 ± 0.87 ln ms(2), p < 0.05). They showed a peak frequency at 0.08 Hz indicating that the body postures had an impact in HRV. Performing EYT-B increased VLF oscillations when compared to the control exercises (EYT-B: 9.32 ± 0.82, CE1-B: 6.31 ± 0.75, CE2-B: 6.04 ± 0.80 ln ms(2), p < 0.05). The frequency of the peak oscillation again matched the repetition rate of the sequence of body movements (0.028 Hz).

Conclusions: The repetition of the sequence of body movements of both EYT exercises clearly affected cardiac autonomic regulation in a rhythmic manner according to the stimulus of the specific body movements of each EYT exercise. These results offer a physiological basis to develop a rationale for specific clinical indications of these EYT exercises such as stress reduction or prevention of hypertension.

Clinical trials registration number: DRKS00006760 (registered on 10/10/2014, i.e. retrospective registration); view details at http://www.drks.de/DRKS00006760.

Figures

Fig. 1
Fig. 1
Sequence of movements of the EYT exercises a EYT-A (‘I Think The Saying’) and b EYT-B (‘Migraine B’) which is repeated several times during the exercise. Note that during ‘I Think The Saying’ different body postures are successively taken (pictures 2 to 7) whereas during ‘Migraine B’ the movement is smooth with the different postures shown in pictures 2 to 7. For further information see the text. Sequence of photos reproduced by courtesy of author BT
Fig. 2
Fig. 2
Examples of RR-interval time series during a EYT-A (‘I Think The Saying’) and b EYT-B (‘Migraine B’) obtained from one subject. In this example, EYT-A was repeated 11 times and EYT-B was repeated 12 times during 8 min. Each repetition of the sequence of movements is indicated by the dashed lines. During ‘I Think The Saying’ a lengthening of RR-intervals occurs at regular intervals whereas during ‘Migraine B’ a pronounced oscillation occurs in the RR-interval series

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