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Comparing the Effects of Cranial Manipulation on Heart Rate Variability and Traube-Hering-Mayer Waves

Journal: The Journal of the American Osteopathic Association Date: 2007/08, 107(8):Pages: 327. doi: Subito , type of study: pretest posttest design

Full text    (https://www.degruyter.com/document/doi/10.7556/jaoa.2007.107.8.327/html)

Keywords:

cranio-sacral osteopathy [184]
CV4 technique [14]
heart rate variability [43]
pretest posttest design [140]

Abstract:

Hypothesis: It has been shown that the cranial rhythmic impulse (CRI) is simultaneous with a measurable oscillation in blood flow velocity known as the Traube-Hering-Mayer (THM) wave. It has also been shown that the THM wave can be enhanced with cranial manipulation. Based on physiological principles, it is reasonable to expect that heart rate variability (HRV) will similarly be enhanced by cranial manipulation. Materials and Methods: A heart rate monitor and a laser Doppler flowmeter were used to measure HRV and the THM wave simultaneously. The protocol consisted of a pre-treatment phase, a CV-4 treatment phase and a post-treatment phase. Each phase lasted approximately 5-10 minutes. Subjects remained quietly in the supine position for the duration of the protocol. The following standard HRV measurements were generated: RMSSD; pNN50; Total Power (0-0.4Hz); High Frequency, HF (0.15-0.4Hz); Low Frequency, LF (0.04-0.15 Hz); Very Low Frequency, VLF (0-0.04 Hz); LF/HF; and the ratio of the powers of various frequency ranges to the Total Power. THM wave power spectra were generated with WinDaq Software. Results: 20 healthy subjects were evaluated. All signed an institutionally approved IRB consent form. Subjects were divided among 3 physicians (N of 3, 4 and 13). For the entire group (N=20), there was no significant change in pre- to post-treatment measurements for any of the standard HRV parameters. For one physician, a significant increase in the Square Root of the Mean of the Squared Differences Between Adjacent Normal RR Intervals (RMSSD) was found pre- to post-treatment [N=4; (mean±SD) pre 51.85±24.33, post 60.7±23.42; P=0.050]. Simultaneous THM wave measurements did not show any significant changes for these subjects [N=4; (mean±SD) pre 1093.3±143.9, post 1079.6±159.1; P=0.601]. Conclusion: An increase in the THM wave following a CV-4 treatment was not demonstrated. However, a significant post-treatment increase in one of the standard HRV measurements was demonstrated. A decreased HRV has been shown to be one of the best predictors of mortality in CHF and post-MI patients. Given the prevalence and mortality associated with heart disease, further research is warranted.


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