Title
Increasing dietary fibre intake in healthy adults using personalised dietary advice compared with general advice A single-blind randomised controlled trial
Author
Rijnaarts, I.
de Roos, N.M.
Wang, T.
Zoetendal, E.G.
Top, J.
Timmer, M.
Bouwman, E.P.
Hogenelst, K.
Witteman, B.
de Wit, N.
Publication year
2020
Abstract
Objective: A high-fibre diet is associated with a lower risk for diseases. However, few adults meet the dietary fibre recommendation. Therefore, the effects and acceptance of an algorithm-generated personalised dietary advice (PDA) compared with general advice (GA) on fibre intake were investigated. Design: A 6-week, single-blind randomised controlled trial with a 3-month follow-up. Setting: PDA was based on habitual intake and provided fibre-rich alternatives using a website; GA contained brochures. Dietary intake was assessed at baseline, week 1, week 6 and 3-month follow-up. Both groups evaluated their advice at week 6. All participants had access to PDA from week 7 until 3-month follow-up. Participants: Two groups of healthy adults: PDA (n 34) and GA (n 47). For 3-month follow-up analysis, participants were re-divided into visitors (n 52) and non-visitors (n 26) of the PDA. Results: At week 6, energy intake remained stable in both groups, but fibre intake per 1000 kcal increased non-significantly in both groups (PDA = Δ0.5 ± 2.8; GA = Δ0.8 ± 3.1, P = 0.128). Importantly, a significantly higher percentage of PDA participants adhered to the recommendation compared with week 1 (PDA = 21 % increase; GA = 4 % increase, P ≤ 0.001). PDA participants evaluated the advice significantly better compared with GA participants. At 3-month follow-up, fibre intake increased compared with baseline (visitors = Δ2.2 ± 2.6, P < 0.001; non-visitors = Δ1.5 ± 1.9, P = 0.001), but was insignificantly different between groups. Visitors had a decrease and non-visitors had an increase in energy intake (visitors =Δ - 132 ± 525; non-visitors = Δ109 ± 507, P = 0.055). Conclusions: The algorithm-generated PDA was well accepted and stimulated adherence to the recommendations more than GA, indicating to be a suitable and cost-efficient method for improving dietary fibre intake in healthy adults. © Authors 2020.
Subject
Dietary fibre
Evaluation
Personalised
Tailored
To reference this document use:
http://resolver.tudelft.nl/uuid:b67c6add-2b67-406c-b5de-73ebde772753
DOI
https://doi.org/10.1017/s1368980020002980
TNO identifier
955356
ISSN
1368-9800
Source
Public Health Nutrition, 24 (24), 1117-1128
Document type
article