BACKGROUND AND OBJECTIVES: Inulin and oligofructose are prebiotic carbohydrates associated with numerous health benefits. The aim of this study was to accurately measure inulin and oligofructose intakes and to develop and validate a food frequency questionnaire (FFQ). SUBJECTS AND METHODS: A 7-d semi-weighed food diary (FD) was used to measure intakes in 66 healthy subjects. A 23-item FFQ was developed to measure short-term inulin and oligofructose intakes over the same 7 days and was completed twice on 2 separate days. RESULTS: There were no significant differences in inulin intake (4.0 ± 1.3 vs 4.0 ± 1.4 g/d, P = 0.646) or oligofructose intake (3.8 ± 1.2 vs 3.8 ± 1.3 g/d, P = 0.864) when measured using the 7-d FD or the FFQ. Bland-Altman analysis demonstrated low mean differences between the FD and FFQ in measuring intakes of inulin (-0.09 g/d) and oligofructose (-0.03 g/d). The FFQ categorised 89% of subjects into the same or adjacent tertiles of intakes as the 7-d FD. For the majority of food items, kappa values indicated 'substantial' or 'almost perfect' agreement for assignment of 'portion size' and 'frequency of consumption' between the FFQs completed on separate days. CONCLUSIONS: The FFQ is a valid and reliable method for measuring short-term inulin and oligofructose intakes for use in dietary surveys and clinical trials.
BACKGROUND AND OBJECTIVES: Inulin and oligofructose are prebiotic carbohydrates associated with numerous health benefits. The aim of this study was to accurately measure inulin and oligofructose intakes and to develop and validate a food frequency questionnaire (FFQ). SUBJECTS AND METHODS: A 7-d semi-weighed food diary (FD) was used to measure intakes in 66 healthy subjects. A 23-item FFQ was developed to measure short-term inulin and oligofructose intakes over the same 7 days and was completed twice on 2 separate days. RESULTS: There were no significant differences in inulin intake (4.0 ± 1.3 vs 4.0 ± 1.4 g/d, P = 0.646) or oligofructose intake (3.8 ± 1.2 vs 3.8 ± 1.3 g/d, P = 0.864) when measured using the 7-d FD or the FFQ. Bland-Altman analysis demonstrated low mean differences between the FD and FFQ in measuring intakes of inulin (-0.09 g/d) and oligofructose (-0.03 g/d). The FFQ categorised 89% of subjects into the same or adjacent tertiles of intakes as the 7-d FD. For the majority of food items, kappa values indicated 'substantial' or 'almost perfect' agreement for assignment of 'portion size' and 'frequency of consumption' between the FFQs completed on separate days. CONCLUSIONS: The FFQ is a valid and reliable method for measuring short-term inulin and oligofructose intakes for use in dietary surveys and clinical trials.
Authors: Jozef Hooson Jzh; Jayne Hutchinson Jyh; Marisol Warthon-Medina; Neil Hancock; Katharine Greathead; Bethany Knowles; Elisa Vargas-Garcia; Lauren E Gibson; Linda A Bush; Barrie Margetts; Sian Robinson; Andy Ness; Nisreen A Alwan; Petra A Wark; Mark Roe; Paul Finglas; Toni Steer; Polly Page; Laura Johnson; Katharine Roberts; Birdem Amoutzopoulos; Victoria J Burley; Darren C Greenwood; Janet E Cade Journal: Crit Rev Food Sci Nutr Date: 2019-03-18 Impact factor: 11.176
Authors: Alex E Mohr; Jamie Pugh; Orla O'Sullivan; Katherine Black; Jeremy R Townsend; David B Pyne; Floris C Wardenaar; Nicholas P West; Corrie M Whisner; Lynne V McFarland Journal: Front Nutr Date: 2022-03-08
Authors: A Rej; A Avery; I Aziz; C J Black; R K Bowyer; R L Buckle; L Seamark; C C Shaw; J Thompson; N Trott; M Williams; D S Sanders Journal: BMC Med Date: 2022-09-13 Impact factor: 11.150
Authors: David Gunn; Zainab Abbas; Hannah C Harris; Giles Major; Caroline Hoad; Penny Gowland; Luca Marciani; Samantha K Gill; Fred J Warren; Megan Rossi; Jose Maria Remes-Troche; Kevin Whelan; Robin C Spiller Journal: Gut Date: 2021-08-05 Impact factor: 23.059