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Cardiac autonomic response after cranial technique of the fourth ventricle (cv4) compression in systemic hypertensive subjects

Journal: Journal of Bodywork and Movement Therapies Date: 2018/07, 22(3):Pages: 666-672. doi: Subito , type of study: controlled clinical trial

Full text    (http://www.sciencedirect.com/science/article/pii/S136085921730339X)

Keywords:

hypertension [26]
blood pressure [35]
heart rate variability [38]
hypertensive [1]
cranial osteopathy [62]
controlled clinical trial [283]

Abstract:

Objective The aim of this study was to compare blood pressure (BP) behavior and heart rate variability (HRV) among hypertensive stage I and normotensive individuals who were submitted to the cranial technique of the 4th ventricle compression (CV4), an osteopathic technique. Methods In this experimental controlled study, thirty men between 40 and 60 years old were evaluated and divided into two groups: normotensive (NT) and hypertensive (HT). The CV4 maneuver was applied in both groups and BP was measured at 5 (five) different stages: pre and post-intervention, 5, 10 and 15min after technique. Time-frequency parameters were obtained from measurements of RR intervals. Data were analyzed using an ANOVA two-way for analysis of the condition factor (NT and HT) and times with p-value ≤ .05. Results There was a reduction in the BP of the HT group. A significant intergroup difference (p = .01) was noticed, with respect to the standard deviation of successive normal R-R intervals (SDNN) values, mainly between pre-intervention and 15min stages. Concerning root mean square of the mean squared differences (RNSSD) values, the highlights were differences between pre-intervention and 10min (p = .01) only in the NT group. There was an increase in high frequencies (HF) values and a low frequencies (LF) attenuation in both groups at all different stages. Conclusion The data showed a BP reduction in the HT group in pre-intervention/15min and an increase in parasympathetic activity and decreased sympathetic activity in both groups. This suggests a change in the sympathetic-vagal balance. However, further studies are needed to elucidate the data on BP reduction mechanisms with CV4.


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