Key result
Eurythmy therapy increases low-frequency HRV oscillations compared to control exercises.
Why the study?
The simultaneous effects of different Eurythmy therapy exercises on cardiac autonomic regulation assessed by heart rate variability were not previously investigated.
Does Eurythmy therapy alter spectral power of heart rate variability in healthy subjects?
Does Eurythmy therapy alter spectral power of heart rate variability in healthy subjects?
Absolute Event Rate: 7.31% vs 6.98%
p-value: p=<0.05
Eurythmy therapy exercises specifically modulate cardiac autonomic regulation by increasing low and very low frequency oscillations of heart rate variability.
May suggest autonomic effects of Eurythmy in healthy subjects; leaves open translation to patients or outcomes.
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.
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Edelhäuser et al. (2015) studied Healthy subjects (n=20). Eurythmy therapy vs. Control exercises (matched movements without guided imagery, and walking on the spot) was evaluated on Low frequency (LF) oscillations of heart rate variability (ln ms2) (p=<0.05). Eurythmy therapy significantly increased specific heart rate variability oscillations, with EYT-A augmenting low frequency oscillations (7.31 vs 6.98 ln ms2) compared to control exercises.
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