I’m not saying I’m right here, but my skepticism when I read studies like this is, how do we know the difference between causation and correlation? For example, people with serious disease (add to this, the effects of the medications they’re taking) simply cannot do high-intensity workouts, with very few exceptions. So they would be almost totally removed from the group showing benefits of high-intensity workouts. They just can’t do it. It doesn’t mean the high-intensity workouts CAUSED people to not have those serious diseases. The disease itself is a filtering agent to take them out of the pool of healthier individuals before the testing even begins, right?
I’m not saying I’m right here, but my skepticism when I read studies like this is, how do we know the difference between causation and correlation? For example, people with serious disease (add to this, the effects of the medications they’re taking) simply cannot do high-intensity workouts, with very few exceptions. So they would be almost totally removed from the group showing benefits of high-intensity workouts. They just can’t do it. It doesn’t mean the high-intensity workouts CAUSED people to not have those serious diseases. The disease itself is a filtering agent to take them out of the pool of healthier individuals before the testing even begins, right?