THORACIC AORTIC REACTIVITY IN OBESE PATIENTS SUBMITTED TO AEROBIC EXERCISE

REATIVIDADE DA AORTA TORÁCICA EM PACIENTES OBESOS SUBMETIDOS AO EXERCÍCIO AERÓBICO

REACTIVIDAD DE LA AORTA TORÁCICA EN PACIENTES OBESOS SOMETIDOS A EJERCICIO AERÓBICO

ABSTRACT

Introduction:

Aerobic exercise can improve the function of the cardiovascular circulatory system, reducing morbidity and mortality from cardiovascular disease by stimulating the production of endogenous self-protection. Activating potassium channels in vascular smooth muscle cells can cause vasodilation and increase blood flow, lowering blood pressure. There is a sensitivity to intracellular ATP and ADP concentration among the variety of potassium channels distributed in vascular smooth muscle cells, which vary mainly during aerobic physical activity.

Objective:

Explore the effect of aerobic exercise on the vascular reactivity of the thoracic aorta in patients with obesity and hyperlipidemia.

Methods:

Randomized controlled trial in twenty male Wistar rats weighing 250g and two months old. The control group remained at rest while the experimental group performed aerobic exercise on a treadmill at increasing speed for eight weeks. The rats were dissected, and dilatators and vasoconstrictors drugs stimulated their blood vessels in a tamponade solution. Observation of vascular changes was measured under controlled tensioning.

Results:

The blockade of KATP channels in vascular smooth muscle caused tonic contraction of vascular smooth muscle cells and increased blood pressure.

Conclusion:

Long-term regular aerobic exercise may induce changes in rats’ thoracic aortic vascular function and vascular smooth muscle reactivity. Aerobic exercise can also significantly improve the activity of KATP channels. Evidence Level II; Therapeutic Studies – Investigating the results.

Keywords:
KATP Channels; Aerobic Exercise; Vasodilation; Obesity