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.
For well-trained athletes including runners however, resting heart rates in the range of as low as 40 and up to 60 bpm is more the expectation. There are of course always exceptions to the rule.n short, the normal resting heart rate of a runner, or any well trained athlete, is statistically proven to be significantly lower than that of sedentary folks.