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.
But thatâs all changing. Runners like ultramarathoner Dean Karnazes are giving distance running a new face, and redefining our image of what a distance runnerâs body looks like. Races like the Tough Mudder and Warrior Dash are exploding in popularity, as alternatives to the same old road 5K or half marathon.