Side Effects. Side effects are rare; still symptoms like ear irritation, acute inflammation of the ear canal and pinna are reported. In some cases the pet might experience lack of appetite, vomiting, diarrhea, or hearing loss during the course of treatment, which might require immediate medical aid.
Furthermore, if the median age of a marathon participant is about 40, then the average maximum heart rate of a U.S. marathoner is about 180. Seventy percent of 180 is 126, while 80 percent is 144. Therefore, the heart rate of a mid-pack runner during a marathon is near the middle of the range -- between 126 and 144, or 135 beats per minute.
A normal resting heart rate should be between 60 and 100 beats per minute. A rate of more than 90 is, however, considered high. 1  The resting heart rate of well trained endurance athletes can be between 40 and 60 beats per minute. 2  Test your rate over a few days to get an average.ake your pulse. To take your pulse at the carotid artery, place your index and middle finger tips lightly on one side of your neck, to the side of your windpipe. Press gently until you find the pulse. Count how many beats there are in 10 seconds, and multiply the number by six.