Premium
The effect of dietary advice on nutrient intakes: evidence from the diet and reinfarction trial (DART)
Author(s) -
Fehily Ann M.,
VaughanWilliams Elaine,
Shiels Kathleen,
Williams Ann H.,
Horner Margaret,
Bingham Georgina,
Burr Michael L.,
Holliday Ruth M.
Publication year - 1989
Publication title -
journal of human nutrition and dietetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 70
eISSN - 1365-277X
pISSN - 0952-3871
DOI - 10.1111/j.1365-277x.1989.tb00026.x
Subject(s) - medicine , nutrient , randomized controlled trial , eicosapentaenoic acid , saturated fat , zoology , dietary fibre , fish <actinopterygii> , polyunsaturated fatty acid , food science , fatty acid , biology , cholesterol , fishery , ecology , biochemistry
The effect of dietary advice on nutrient intakes was examined in a random subsample of 459 men who were taking part in a randomized controlled trial of secondary prevention of myocardial infarction. The trial is of factorial design, to examine the effect of three dieteary aims, alone and in combination:1 A reduction in total fat to 30% of energy, together with an increase in polyunsaturated/saturated fat ratio (P/S) to 1.0. 2 An increase in fatty fish consumption to at least 300 g/week (3 g eicosapentaenoic acid (EPA)). 3 An increase in cereal fibre intake to 18 g/day (total fibre 30 g/day). Men were randomly allocated to one of the eight regimens (fat, fish, fibre, fat plus fish, fat plus fibre, fish plus fibre, fat plus fish plus fibre, or none of these) and are being followed up for at least two years. Six months after the advice was given, nutrient intakes were assessed from 7‐d weighed intake records. Of those advised to reduce fat intake and increase P/S ratio, mean intakes were 31% of energy and 0.85, respectively. This compared with 35% of energy and 0.45 for those not given this advice. Mean EPA intake was 2.5 g/week for the fish advice group and 0.79 g/week for the no fish advice group. Mean cereal fibre intake of the fibre advice group was 15 g/d (26 g/d total fibre) compared with 9 g/d (20 g/d total fibre) for the no fibre advice group. Thus for each of the dietary aims, the advice had a substantial effect on intakes.