Diet quality as measured by the Diet Quality Index-International is associated with prospective changes in body fat among Canadian children

作者：Setayeshgar Solmaz; Maximova Katerina^*; Ekwaru John Paul; Gray Donald Katherine; Henderson Melanie; Paradis Gilles; Tremblay Angelo; Veugelers Paul

来源：Public Health Nutrition, 2017, 20(3): 456-463.

DOI：10.1017/S1368980016002500

• Dietary quality
• Diet Quality Index-International
• Longitudinal study
• Public health
• Adiposity
• Children

Objective: To quantify the association of dietary quality with prospective changes in adiposity.
Design: Children participating in the QUALITY (QUebec Adipose and Lifestyle InvesTigation in Youth) study underwent examination at baseline and at 2-year follow-up. Dietary quality was assessed by the Diet Quality Index-International (DQII) using three non-consecutive 24 h diet recalls at baseline. The DQII has four main categories: dietary adequacy, variety, moderation and overall balance. Fat mass index (FMI; [fat mass (kg)]/[height (m)](2)), central FMI (CFMI; [trunk fat mass (kg)]/[height (m)](2)), percentage body fat (%BF; [total fat mass (kg)]/[total mass (kg)]) and percentage central BF (%CBF; [trunk fat mass (kg)]/[total mass (kg)]) were assessed through dual-energy X-ray absorptiometry.
Setting: Children were selected from schools in the greater Montreal, Sherbrooke and Quebec City metropolitan areas between 2005 and 2008, Quebec, Canada.
Subjects: A total of 546 children aged 8-10 years, including 244 girls and 302 boys.
Results: Regression analysis adjusting for age, sex, energy intake, physical activity and Tanner stage revealed that every 10-unit improvement in overall DQII score was associated with lower gain in CFMI (beta=-0.08; 95 % CI -0.17, -0.003) and %BF (beta=-0.55; 95 % CI -1.08, -0.02). Each unit improvement in dietary adequacy score was associated with lower gain in FMI (beta=-0.05; 95 % CI -0.08, -0.008), CFMI (beta=-0.03; 95 % CI -0.05, -0.007), %BF (beta=-0.15; 95 % CI -0.28, -0.03) and %CBF (beta=-0.09; 95 % CI -0.15, -0.02).
Conclusions: Promotion of dietary quality and adequacy may reduce weight gain in childhood and prevent chronic diseases later in life.

• 出版日期2017-2