Digitally supported dietary counseling increases protein intake in community dwelling older adults: subgroup-analysis of the VITAMIN RCT

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Purpose: For prevention of sarcopenia and functional decline in community dwelling older adults, a higher daily protein intake is needed in addition to increased exercise. A new e-health strategy for dietary counseling was usedwith the aim to increase total daily protein intake to optimal levels (minimal 1.2 g/kg/day, optimal 1.5 g/kg/day) through use of regular food products.Methods: The VITAMIN (VITal AMsterdam older adults IN the city) RCT included 245 community dwelling older adults (age ≥ 55y): control, exercise, and exercise plus dietary counseling (protein) group. The dietary counselingintervention was based on behavior change and personalization was offered by a dietitian coach, by use of face-to-face contacts and videoconferencing during a 6-month intervention. Dietary intake was measured by a 3d dietaryrecord at baseline, after 6-month intervention and 12-month follow-up. The primary outcome was average daily protein intake (g/kg/day). Sub-group analysis and secondary outcomes included daily protein distribution, sources,product groups. A Linear Mixed Models (LMM) of repeated measures was performed with STATA v13.Results: Mean age of the 224 subjects was 72.0(6.5) years, a BMI of 26.0(4.2) and 71% were female. The LMM showed a significant effect of time and time*group (p<0.001). The dietary counseling group showed higher protein intakethan either control (1.41 vs 1.13 g/kg/day; β +0.32; p<0.001) or exercise group (1.41 vs 1.11 g/kg/day; β +0.33; p<0.001) after 6-month intervention and 12-month follow-up (1.24 vs 1.05; β +0.23; p<0.001 | 1.24 vs 1.07 β +0.19;p<0.001). Additional analysis revealed the higher protein intake was fully accounted for by animal protein intake.Conclusions: This study shows digitally supported dietary counseling improves protein intake sufficiently incommunity dwelling older adults with use of regular food products. Protein intake increase by personalizedcounseling with e-health is a promising strategy for dietitians with the upcoming rising ageing population.Keywords: Ageing, Behavior change, Nutrition, Physical Functioning, Sarcopenia
Original languageEnglish
Title of host publication2020 abstract book
Subtitle of host publicationISBNPA
EditorsWendy van Lippevelde, Erica Hinckson, António Palmeira, Cindy Gray, Paul Lee, Falk Mueller-Riemenschneider, Sara Rosenkranz
PublisherInternational Society of Behavioral Nutrition and Physical Activity
ISBN (Print):9781732401112
Publication statusPublished - 12 Sep 2020
EventISBNPA - Xchange: 19th Annual Meeting of the International Society of Behavioral Nutrition and Physical Activity (ISBNPA) - Online
Duration: 15 Jun 202025 Jun 2020


ConferenceISBNPA - Xchange
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