Figure 2.

Exercise by time points of outcome measured: A) Outcome measured at ≤ 4 wk; B) outcome measured at > 4 and < 12 wk; C) outcome measured at ≥ 12 wk; D) outcome measured at longest follow-up after intervention completed. If a trial reported multiple time points within the specified time points, the trial only contributed once to the time point. For A), we routinely chose the midpoint of 2 wk unless only 1- and 4-wk data were reported; in which case, we chose the 4-wk data. For B), we chose the time closest to the midpoint of the time frame (ie, 8 wk). For C), we chose the longest point patients were receiving either intervention or control.