Megan A Mcvay1, Valerie H Myers2, William M Vollmer3, Janelle W Coughlin4, Catherine M Champagne5, Arlene T Dalcin4, Kristine L Funk3, Jack F Hollis3, Gerald J Jerome6, Carmen D Samuel-Hodge7, Victor J Stevens3, Laura P Svetkey8, Phillip J Brantley5. 1. Duke University Medical Center, Division of General Internal Medicine, Duke University, Durham; Department of Veteran Affairs, Center of Excellence for Health Services Research in Primary Care, Durham. 2. Klein Buendel, Inc., Golden, Colorado. 3. Center for Health Research, Kaiser Permanente, Portland, Oregon. 4. School of Medicine, Johns Hopkins University, Baltimore. 5. Louisiana State University System, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA. 6. Towson University, Towson, Maryland. 7. Gillings School of Public Health and School of Medicine, University of North Carolina, Chapel Hill, North Carolina. 8. Sarah W. Stedman Nutrition and Metabolism Center, Durham; Duke Hypertension Center, Division of Nephrology, Department of Medicine, Duke University Medical Center, Durham.
Abstract
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 Weight Loss Maintenance Trial, 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-African American, and had a mean age of 55.6 and BMI of 34.1 kg/m2. Being African American (P < 0.0001) and higher baseline kilojoule intake (P < 0.01) were associated with smaller reductions in fat intake. Being African American (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, African Americans may make fewer beneficial changes in fat and fruit and vegetable intake than non-African Americans.
RCT Entities:
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 Weight Loss Maintenance Trial, 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-African American, and had a mean age of 55.6 and BMI of 34.1 kg/m2. Being African American (P < 0.0001) and higher baseline kilojoule intake (P < 0.01) were associated with smaller reductions in fat intake. Being African American (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, African Americans may make fewer beneficial changes in fat and fruit and vegetable intake than non-African Americans.
Entities:
Keywords:
dietary fats; energy intake; weight loss
Authors: Catherine M Champagne; Stephanie T Broyles; Laura D Moran; Katherine C Cash; Erma J Levy; Pao-Hwa Lin; Bryan C Batch; Lillian F Lien; Kristine L Funk; Arlene Dalcin; Catherine Loria; Valerie H Myers Journal: J Am Diet Assoc Date: 2011-12
Authors: Boyd A Swinburn; Gary Sacks; Kevin D Hall; Klim McPherson; Diane T Finegood; Marjory L Moodie; Steven L Gortmaker Journal: Lancet Date: 2011-08-27 Impact factor: 79.321
Authors: Cynthia A Thomson; Anna Giuliano; Cheryl L Rock; Cheryl K Ritenbaugh; Shirley W Flatt; Susan Faerber; Vicky Newman; Bette Caan; Ellen Graver; Vern Hartz; Robin Whitacre; Felicia Parker; John P Pierce; James R Marshall Journal: Am J Epidemiol Date: 2003-04-15 Impact factor: 4.897
Authors: Laura P Svetkey; Victor J Stevens; Phillip J Brantley; Lawrence J Appel; Jack F Hollis; Catherine M Loria; William M Vollmer; Christina M Gullion; Kristine Funk; Patti Smith; Carmen Samuel-Hodge; Valerie Myers; Lillian F Lien; Daniel Laferriere; Betty Kennedy; Gerald J Jerome; Fran Heinith; David W Harsha; Pamela Evans; Thomas P Erlinger; Arline T Dalcin; Janelle Coughlin; Jeanne Charleston; Catherine M Champagne; Alan Bauck; Jamy D Ard; Kathleen Aicher Journal: JAMA Date: 2008-03-12 Impact factor: 56.272
Authors: Jack F Hollis; Christina M Gullion; Victor J Stevens; Phillip J Brantley; Lawrence J Appel; Jamy D Ard; Catherine M Champagne; Arlene Dalcin; Thomas P Erlinger; Kristine Funk; Daniel Laferriere; Pao-Hwa Lin; Catherine M Loria; Carmen Samuel-Hodge; William M Vollmer; Laura P Svetkey Journal: Am J Prev Med Date: 2008-08 Impact factor: 5.043