Final answer:
The blood pressure range for stage I disqualification is 140/90 mm Hg or higher. Hypertension is defined by such chronically elevated levels, and this condition requires careful management due to the risks of serious health complications.
Step-by-step explanation:
The blood pressure range for stage I disqualification is 140/90 or higher. According to the American College of Cardiology and American Heart Association, a normal blood pressure is less than 120/80 mm Hg. Elevated blood pressure is classified when the systolic pressure is between 120-129 and diastolic pressure is less than 80 mm Hg. Hypertension, which is a chronic condition, is defined when blood pressure readings are consistently at 140/90 mm Hg or above. Blood pressure readings between 120/80 mm Hg and 139/89 mm Hg are considered as prehypertension, which is below the threshold for stage I hypertension disqualification.
It's important to control blood pressure to reduce the risk of heart attack, stroke, and other related health issues. The systolic pressure indicates the pressure on the blood vessels when the heart beats, while diastolic pressure indicates the pressure when the heart rests between beats.