title: Dietary prescription adherence and non-structured physical activity following weight loss with and without aerobic exercise.
abstract: OBJECTIVE
  To compare the effects of weight loss with and without exercise on 1) dietary prescription adherence and 2) non-structured activity in postmenopausal women.
  
  
  METHODS
  Longitudinal study.
  
  
  METHODS
  Clinical research setting with facility based exercise and nutrition education.
  
  
  METHODS
  Overweight and obese women, 45-76 years old.
  
  
  METHODS
  6 months of weight loss alone (WL; N=38) or with aerobic exercise (AEX+WL; N=41).
  
  
  METHODS
  Cardiorespiratory fitness (VO2max), resting metabolic rate (RMR), seven day food intake, and physical activity (by Actical accelerometers worn in a subset subgroup: WL: N=10; AEX+WL: N=15) were assessed before and after the interventions.
  
  
  RESULTS
  Both interventions resulted in similar weight loss (~9%) and no significant changes in RMR, while only the AEX+WL group improved VO2max (~10%). At baseline, the AEX+WL group consumed slightly more protein than the WL group (P<0.01). Macronutrient intake did not change following AEX+WL, but the WL group decreased their fat intake and increased their carbohydrates and protein intakes (Ps<0.05), which resulted in similar macronutrient intakes between groups post-intervention. Weekday total activity counts decreased 22% (P<0.05) following WL. This change tended (P=0.07) to be different than the lack of change in non-structured activity observed following AEX+WL.
  
  
  CONCLUSIONS
  Although similar dietary adherence was observed, these data suggest that postmenopausal women undergoing weight loss may benefit from the addition of exercise to prevent the decline in non-structured activity observed following weight loss alone.
authors.affiliation: Monica C. Serra, Baltimore VA Medical Center, 10 N. Greene St, GRECC (BT/18/GR), Baltimore, MD 21201, Phone: (410) 605 7000 x 4199, Fax: (410) 605 7913, Email: mserra@grecc.umaryland.edu.
authors.forename: M C
authors.initials: MC
authors.lastname: Serra
authors.forename: M S
authors.initials: MS
authors.lastname: Treuth
authors.forename: A S
authors.initials: AS
authors.lastname: Ryan
mesh_terms: D000368:Aged; D004035:Diet Therapy; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology*; D009765:Obesity / Q000378:metabolism; D050177:Overweight / Q000378:metabolism; D010349:Patient Compliance; D017698:Postmenopause / Q000502:physiology*; D055656:Prescriptions; D015431:Weight Loss