Effects of the Fourth Ventricle Compression Technique and Rib Raising Osteopathic Technique on Autonomic Nervous System Activity Measured by Heart Rate Variability in 35 Healthy Individuals.

BACKGROUND Fourth ventricle compression (CV4) is a cranial osteopathic manipulation technique for brain and cranial nerve function. Rib raising is an osteopathic technique that reduces rib restriction and conditions associated with sympathetic hypertonia. This study aimed to evaluate the effects of the CV4 and rib raising osteopathic techniques on autonomic nervous system activity, measured by heart rate variability, in 35 healthy individuals. MATERIAL AND METHODS The study involved 35 healthy participants, randomly divided into 2 groups. The experimental group received osteopathic therapy in the form CV4 and rib raising techniques for 30 min. The placebo group had a sham procedure performed using an ultrasound transducer for 20 min. The test of heart rate variability was conducted for 6 min, with participants in a seated position. RESULTS A significant decrease in heart rate values was observed in the experimental group (P=0.012), and an increase in the standard deviation of all the rib raising intervals parameter and a decrease in the high frequency% parameter was observed in the placebo group (P=0.035, P=0.048; respectively). There were no differences in other parameters between the groups. CONCLUSIONS The use of the CV4 technique and rib raising technique leads to a significant decrease in heart rate, which can be interpreted as increased parasympathetic activity; however, the use of these techniques did not affect the other parameters.