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Predictors of dietary change among those who successfully lost weight in phase I of the W eight L oss M aintenance T rial
Author(s) -
McVay Megan A.,
Myers Valerie H.,
Vollmer William M.,
Coughlin Janelle W.,
Champagne Catherine M.,
Dalcin Arlene T.,
Funk Kristine L.,
Hollis Jack F.,
Jerome Gerald J.,
SamuelHodge Carmen D.,
Stevens Victor J.,
Svetkey Laura P.,
Brantley Phillip J.
Publication year - 2014
Publication title -
nutrition and dietetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.479
H-Index - 31
eISSN - 1747-0080
pISSN - 1446-6368
DOI - 10.1111/1747-0080.12092
Subject(s) - weight loss , psychosocial , medicine , weight change , zoology , psychological intervention , obesity , biology , psychiatry
Aim Dietary changes occurring during weight loss interventions can vary. The present study tested if pretreatment psychosocial, dietary and demographic factors were associated with changes in fat intake and fruit and vegetable intake during a weight loss intervention. Methods This analysis includes participants who lost at least four kilograms during the initial six month weight loss phase (phase I ) of the W eight L oss M aintenance T rial, a group format behavioural intervention emphasising a low‐fat diet and increased physical activity. Multiple linear regression was used to determine associations between pretreatment psychosocial, dietary, physical activity, and demographic variables and changes from pretreatment to six months in fat intake and fruit and vegetable intake. Results Participants ( n = 1032) were 63.4% female, 62.4% non‐ A frican A merican, and had a mean age of 55.6 and BMI of 34.1 kg/m 2 . Being A frican A merican ( P < 0.0001) and higher baseline kilojoule intake ( P < 0.01) were associated with smaller reductions in fat intake. Being A frican A merican ( p < 0.001) and older age ( P = 0.02) were associated with smaller increases in fruit and vegetable intake, whereas a history of 10 or more past weight loss episodes of at least 10 lb (4.5 kg; P < 0.01) was associated with greater increases. Conclusions Few psychosocial factors examined contributed to variability in dietary change. Even when achieving meaningful weight losses during a behavioural weight loss intervention, A frican A mericans may make fewer beneficial changes in fat and fruit and vegetable intake than non‐ A frican A mericans.