Abstract

Gravity inversion procedures using full (-90 degree) inversion are an increasingly popular method for traction and are now being used by an estimated 1 million people. Recent reports in the medical literature suggest that these procedures may be contraindicated in patients with hypertension, cardiovascular disease, or ocular problems. To assess the physiological changes that occur in the inverted position, ten borderline hypertensive people (average resting blood pressure of 142/88 mm Hg) were subjected to a three-minute inactive period of inversion. Systemic blood pressure, pulse rate, central retinal arterial pressure, and intraocular pressure were measured and found to be significantly elevated in all subjects after inversion. The authors conclude that these procedures may be contraindicated in uncontrolled hypertensives. However, there have been no reported cases of stroke or cerebrovascular accidents, despite the widespread use of these devices. Verf.-Referat