You might know your blood pressure and cholesterol numbers, but do you know your cardiorespiratory fitness level. Experts at the American Heart Association think this number may be an even better gauge of heart health. Cardiorespiratory fitness shows how aerobically fit you are and how effectively your circulatory system sends oxygen throughout your body.
The cardiorespiratory fitness
Cardiorespiratory fitness (CRF) refers to the ability of the circulatory and respiratory systems to supply oxygen to skeletal muscles during sustained physical activity. The primary measure of CRF is VO2 max. In 2016, the American Heart Association publish an official scientific statement advocating that CRF be categorize as a clinical vital sign; also should be routinely assess as part of clinical practice.
Regular exercise makes these systems more efficient by enlarging the heart muscle; enabling more blood to be pump with each stroke, and increasing the number of small arteries in train skeletal muscles; which supply more blood to working muscles. Exercise improves not just the respiratory system but the heart by increasing the amount of oxygen that is inhale and distribute to body tissue. A 2005 Cochrane review demonstrate; so that physical activity interventions are effective for increasing cardiovascular.
Research indicates that poor aerobic fitness is with a high risk of heart disease; so as well as death from various causes. It’s as dangerous as chronic illnesses and smoking. Yet cardiorespiratory fitness is the one risk factor not routinely check at doctor visits unless you request it. Your doctor can measure cardiorespiratory fitness through what’s called your maximal oxygen consumption (VO2 max) or from readings taken while you do an aerobic workout.
The emergency situations
Before the industrial revolution, fitness was define as the capacity to carry out the day’s activities without undue fatigue. However, with automation and changes in lifestyles physical fitness is now consider a measure of the body’s ability to function efficiently and effectively in work and leisure activities, to be healthy, to resist hypokinetic diseases, and to meet emergency situations.
This reveals your body’s capacity for transporting and using oxygen during exercise. In between doctor visits, for a quick snapshot of your cardiorespiratory fitness profile; so you can use an online calculator to test yourself. It’s not the same as having an actual test, but you’ll get a good idea of where you are for your age.
The good news about cardiorespiratory fitness is that you can improve it. How? By exercising on a regular and consistent basis. In healthy adults, high-intensity interval training (HIIT) more effectively raises cardiorespiratory fitness than moderate-intensity continuous training, even if you burn the same number of calories. Yes, you’ll huff and puff more during the periods of high-intensity exertion, but they alternate with rest intervals. And an HIIT workout typically takes less time to complete than a traditional cardio workout.