168 karma · joined August 18, 2015
https://jalopnik.com/how-one-suv-fire-destroyed-45-million-i...
In our case, specificly, the only exceptions have been things know significantly in advance where it would really be practical to be able to shop around.
The implications of allowing the control group to self-select their activities from the guidelines.
I wonder if they would have biased toward the HIIT activities (perceiving them to be better) simply because they were participating in the study. Would the outcome have been different if they were asked to maintain their existing activity levels or somehow replicate the normal activity mix of people following the guidance. Otherwise, it seems more useful to focus on the difference between the HIIT and MICT groups.