1. Middleton , William A.
  2. Savage , Patrick D.
  3. Khadanga , Sherrie
  4. Rengo , Jason L.
  5. Ades , Philip A.
  6. Gaalema , Diann E.


The results from this study suggest that anxiety, which is overrepresented in populations with lower SES, is associated with less CRF improvement across the duration of CR. The effect size was clinically meaningful and calls for future research on addressing psychological factor in CR.