INTRODUCTION: The autonomic nervous system governs the short and medium term, the necessary modifications to adapt blood pressure and heart rate to changes in posture. OBJECTIVE: To analyze the hemodynamics variables in healthy individuals when subjected to positional gravity. MATERIALS AND METHODS: Sixty healthy individuals, divided in groups based on age, being GI (n = 20), from 15 to 20 years old, GII (n = 20), from 21 to 40 years old, GIII (n = 20) from 41 to 60 years old, being submitted to the position gravity through the GPS equipment and they had the cardiac frequency and blood pressure monitored throughout all the time of inversion. RESULTS: A significant reduction of heart rate and blood pressure in the rest position when compared after 3, 6, 9 and 12 minutes of inversion, however 3 minutes after return to the orthostatic position this variables came back near to the baseline. About the blood pressure diastolic, it was not observed a significant decrease in the GI and GII group in the rest position when compared after 3 minutes; however in the GIII group it was observed a significant drop. After 6 minutes of inversion only the GI group showed a significant drop. When analyzed 9 minutes after the position, only the GIII group showed a significant dro. After 12 minutes the inversion, it was also showed a blood pressure diastolic drop only in GIII group when compared to the values of the rest position. Returning to the vertical position, all groups returned to the baseline values after 3 minutes. CONCLUSION: The gravitational positioning changes the hemodynamics variables causing a drop of the values of the heart rate and the blood pressure during the inversion period.
Heart rate; Blood pressure; Inversion
