Target heart rate. The recommended range is 60-85% of your maximum heart rate. It represents a pace that ensures you are training aerobically and can reasonably be maintained. See Exercise Intensity
target heart rate. The number of heartbeats per minute at which one should exercise for a desired result; 60-85% of the maximum heart rate is recommended for most people.
Target heart rate. A percentage of your maximum heart rate that should be achieved during aerobic exercise. THR can be anywhere from 60 percent to 90 percent of your MHR.
Threatened. Any native species that, on the basis of the best available scientific evidence, is at risk of becoming endangered throughout all or a significant portion of its Ontario range if the limiting factors are not reversed.