Dopamine in movement. A part of the brain called the basal ganglia regulates movement. Basal ganglia in turn depend on a certain amount of dopamine to function at peak efficiency. The action of dopamine occurs via dopamine receptors, D1-5. Dopamine reduces the influence of the indirect pathway, and increases the actions of the direct pathway within the basal ganglia.
In general terms, your THR is 60-80% of your maximum heart rate. You can either estimate what your THR is based on your age, or calculate it effectively by using the Karvonen or Zoladz method. Whichever way you do it, remember the THR is measured in beats per minute (bpm).
1 One basic method is just subtract your age from 220. 2  So if you are 30, your maximum heart rate will be approximately 190 beats per minute. 3  This method is considered more accurate for those under 40. 4  A slightly more complicated recent method is to multiply your age by 0.7, and then subtract that figure from 208. One basic method is just subtract your age from 220. 2  So if you are 30, your maximum heart rate will be approximately 190 beats per minute. 3  This method is considered more accurate for those under 40. 4  A slightly more complicated recent method is to multiply your age by 0.7, and then subtract that figure from 208.