Jeesh, I wondered about that confounding variable but dismissed it, thinking surely they would have the sense to split their subjects so that half did 440 the f

Jeesh, I wondered about that confounding variable but dismissed it, thinking surely they would have the sense to split their subjects so that half did 440 the first day and half did 432 the first day. It seems completely unsurprising that one would be slightly more relaxed the second day than the first. Edit: In another comment someone mentions that this study was split the way I would have expected so hopefully they did account for schedule at least. Unfortunately I'm not seeing an easy way to access the whole paper to verify.