Changes in diet quality during a 12 month weight loss randomised controlled trial

BMC Nutrition
Cinthya WibisonoLinda C Tapsell

Abstract

Reductions in energy intake are seen in weight loss trials, but whether this occurs with improvements to diet quality (DQ) is less established. The aim of this study was to evaluate changes in diet quality in a sample of volunteers in a weight loss trial. This was a secondary analysis of dietary data from a lifestyle intervention trial (the HealthTrack study) which advised on dietary guidelines. The trial ran for 12 months with three treatment groups: control (general advice C), intervention (individualised advice, I), and intervention plus a supplement of walnuts (IW). Both the published a priori diet quality score (APDQS, maximum score 164) and a study specific Diet Quality Tracker (DQT, maximum score 44) indicated compliance to dietary advice. DQ scores calculated at 0, 3months and 12months were evaluated using two-way RMANOVA, one-way ANOVA and one-way RMANOVA. Changes in intakes of food groups and nutrients were analysed using Kruskal-Wallis and Friedman's tests. There were no differences between groups at baseline, but at 3months IW recorded higher DQ scores (APDQS:96 ± 10; DQT:22 ± 5, P < 1 × 10-3 for both) compared to I (APDQS:91 ± 13, P < 1 × 10-3; DQT:21 ± 4, P < 1 × 10-2) and C (APDQS:87 ± 12, P < 5 × 10-2; DQT:19 ± ...Continue Reading

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Citations

Jul 30, 2020·Journal of Human Nutrition and Dietetics : the Official Journal of the British Dietetic Association·K ZoszakY Probst

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Software Mentioned

SPSS
Xyris
SPSS Statistics
FoodWorks
HealthTrack

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