How high or what percentage of MHR do you think a powerlifter would reach during a lift? I understand it is relative to age, genetics, Valsalva, etc.
Some folks dispute that anaerobic energy doesnt push MHR. I disagree. In my thinking, once you have reached the status of "anaerobic" you should already be around 90% of Max.
Its interesting to see runners think that they are the only ones who can get their heart rate going.