This chest tightness can change from day to day, and/or from moment to moment. All of the above combinations and variations are common. This type of chest tightness is commonly misconstrued as heart problems or the signs of a heart attack.
Cardiac arrest, also known as cardiopulmonary arrest or circulatory arrest, is a sudden stop in effective blood circulation due to the failure of the heart to contract effectively or at all. Medical personnel may refer to an unexpected cardiac arrest as a sudden cardiac arrest (SCA).
Photo Credit monkeybusinessimages/iStock/Getty Images. Cardiorespiratory endurance is how effectively your heart, lungs and blood vessels work together to get oxygen to all of your bodyâs tissues and organs. The amount of oxygen your body uses is referred to as oxygen consumption or VO2, or volume of oxygen. As your intensity of exercise increases, VO2 rises and eventually reaches its peak value, known as V02max. VO2max, also known as aerobic capacity, is the measure of cardiorespiratory endurance.