Blood pressure and heart rate are two different things but are closely related. The heart rate is the number of times the heart beats in a minute. Blood pressure is the measurement of force of the blood against the walls of arteries.
Heart Rate
Heart rate is the number of times the heart beats per minute. The unit for the measurement of heart rate is BPMs (beats per minute). The heart rate is indicated with a single number representing the number of hear beats in a minute.
The normal resting heart rate in adults is 60 to 90 bpm; below 60 bpm refers to as bradycardia, and above 100 bpm refers to as tachycardia. Athletes often have been resting on heart rates below 60 bpm. The low pulse rate in athletes is due to cardiac muscle’s hypertrophy; therefore, it enables a higher volume of blood can pump at each beat (i.e. higher stroke volume).
Slow heart beat and blood pressure
If the heart stops beating for a moment, then the blood pressure drops to zero or to a lower value. On the other hand, if the heart beat increases the blood pressure increases but not by the same amount of heart beat rate. Because even when the heart beats more times in a minute than normal, healthy blood vessels dilates (get bulged) to accommodate more blood to flow through.
Fast heart beat and blood pressure
When exercising, normally the heart beat increases so that nutrient and oxygen-rich blood can nourish the muscles. It is possible to double the heart beat rate, while the blood pressure increases only marginally.