gwern comments on Optimal Exercise - Less Wrong

50 Post author: RomeoStevens 10 March 2014 03:37AM

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Comment author: G0W51 03 August 2014 03:18:48PM *  0 points [-]

One review found the relationship between physical activity and mortality to be linear. Does anyone have any ideas as to why this review found such a relationship while others didn't?

Comment author: gwern 03 August 2014 07:30:03PM 0 points [-]

Which others didn't?

Comment author: G0W51 04 August 2014 03:52:31PM *  0 points [-]

The review mentioned in the post didn't, although I've only looked at 2 studies on the dose-response relationship.

Edit: Actually, the review mentioned in the post didn't seem to really test the shape of the dose-response relationship, I think they just assumed mortality risk had an inverse linear relationship with the natural log with the amount of exercise.

Comment author: gwern 05 August 2014 07:50:33PM 0 points [-]

I think they just assumed mortality risk had an inverse linear relationship with the natural log with the amount of exercise.

Yeah, the table just gives linear estimates, but all of them do say more exercise is better, I think.