Hypertension: blood pressure in muscle activity and types of stress
Many types of stress along with muscle activity are similar in hypertension. For example, during a panic attack, blood pressure can increase by 70-100 mmHg in a few seconds.
An important example of the nervous system's ability to increase blood pressure is the increase in blood pressure that occurs in the muscle. During heavy exercise, muscles require large amounts of blood. Part of this is due to regional vasodilation of muscle vessels caused by increased muscle metabolism. In addition, this is due to increased sympathetic stimulation throughout the circulatory system. During heavy exercise, blood pressure can increase by 30 to 40%, blood flow can be doubled.
The increase in blood pressure during exercise results mainly from the effects on the nervous system. At the same time, the active area of the brain becomes active to cause movement, the reticular system of the brain stem is also activated, increasing the excitability of the vasoconstrictor and the cardio-cerebral region of the vasomotor centre. The hypertensive effect is maintained with increased muscle activity.
Many other types of stress along with muscle activity are similar in hypertension. For example, during a panic attack, blood pressure can increase by 70-100 mmHg in a few seconds. This response is known as the alarm response, and it produces excessive blood pressure needed to immediately supply the muscles that may be needed to respond immediately to fear of danger.