title: Participants in an online weight loss program can improve diet quality during weight loss: a randomized controlled trial.
abstract: BACKGROUND
  Better diet quality has been associated with less weight gain over time. However, few studies have examined the role of diet quality during weight loss. This study aimed to compare changes in diet quality in overweight/obese adults during a weight loss intervention, and determine whether an association between diet quality score and weight loss exists.
  
  
  METHODS
  Overweight or obese (BMI 25-40 kg/m2) adults, aged 18-60 years, were recruited from the Hunter Region of NSW, Australia and randomized to one of three groups: a standard online weight loss program (n = 94); an enhanced version of this online program that provided additional personalized feedback and reminders (n = 98); or a wait-list control group (n = 97). Diet quality was calculated using the Australian Recommended Food Score (ARFS) with dietary data from the Australian Eating Survey (AES) Food Frequency Questionnaire at baseline and 12-weeks.
  
  
  RESULTS
  The basic and enhanced groups lost significantly more weight than the control group after 12 weeks (basic -2.2 ± 3.4 kg, enhanced -3.0 ± 4.0 kg, control 0.4 ± 2.4 kg, P < 0.001) with no difference between the basic and enhanced groups. The mean change in ARFS in the enhanced group (2.2 ± 5.7) was significantly higher (P = 0.03) than the control group. There were no significant differences in change in ARFS between the enhanced and basic, or basic and control groups. The ARFS and the fruit, meat, wholegrain, dairy and water sub-scale scores at 12 weeks were significantly associated with greater weight loss (P < 0.05).
  
  
  CONCLUSIONS
  Diet quality improved significantly in the enhanced group compared to controls following 12-weeks intervention. Furthermore, higher diet quality was associated with greater weight loss.
  
  
  BACKGROUND
  ACTRN12610000197033.
authors.forename: Kate M
authors.initials: KM
authors.lastname: O'Brien
authors.forename: Melinda J
authors.initials: MJ
authors.lastname: Hutchesson
authors.forename: Megan
authors.initials: M
authors.lastname: Jensen
authors.forename: Philip
authors.initials: P
authors.lastname: Morgan
authors.forename: Robin
authors.initials: R
authors.lastname: Callister
authors.affiliation: University of Newcastle, 2308 Callaghan, NSW, Australia. clare.collins@newcastle.edu.au.
authors.forename: Clare E
authors.initials: CE
authors.lastname: Collins
mesh_terms: D000293:Adolescent; D000328:Adult; D001315:Australia; D015992:Body Mass Index; D004032:Diet; D002523:Edible Grain; D002149:Energy Intake; D005247:Feeding Behavior; D005260:Female; D005638:Fruit; D015438:Health Behavior; D006801:Humans; D020407:Internet; D016014:Linear Models; D008297:Male; D008460:Meat; D008875:Middle Aged; D009043:Motor Activity; D015596:Nutrition Assessment; D009765:Obesity / Q000628:therapy; D012959:Socioeconomic Factors; D015431:Weight Loss; D061217:Weight Reduction Programs / Q000379:methods*; D055815:Young Adult
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