Thank you for this in-depth analysis! It clarifies that the control group did not (or were not specified to) exercise. Why they called it a mind-body group is beyond me; mind-only would be more apt.

As for the conclusion, it sounds like the only statistically significant result was attention (aka focus?). I’m guessing they also tested things like memory, brain speed, intelligence or navigation but didn’t see any happy additional benefits. Of course, attention itself is a boon, and the study group was healthier for the exercise. They mentioned Dance Dance Revolution, I’m curious if the study used a similar program to train the seniors.