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Information and advice on heart conditions & stroke disease, everything from prevention to illness for your wellbeing.
Read our glossary of related words with definitions by clicking on the alphabet below.
Heart Index - E
Endocardium
The innermost layer of the wall of the heart.
Epicardium
The outermost layer of the wall of the heart.
Exercise tolerance
The amount of physical activity that a person can undertake without developing breathing difficulties or physical discomfort.
Endothelium
The inner lining of blood vessels.
Exercise heart rate
The heart rate at which one should attain during exercise to maximise cardiovascular benefits. It is pegged at 60-80% of a person’s maximum heart rate (defined as 220 minus his age).
Find out your exercise heart rate using our calculator.
