What the story doesn't mention is that sex gets your heart rate up even higher and is even more "dangerous" than hunting! Granted the duration is infinitely shorter
More men die of a heart attack each year while having sex than die while hunting from any cause.
I love when the media gets a common sense study like this and tries to blow it out of proportion. Anytim you take someone with heart disease and increase their heart rate whether it be via hunting, sex, walking, cocaine, or playing with their grandkids, you increase the risk of heart attack. Of course they'll never publish a story that playing with your grandkids is dangerous to your heart!