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Patterns in achieved energy intake: a mathematical approach to assessing adherence (811.7)
Author(s) -
Marshall Kaitlyn,
Bodrato Victoria,
Thomas Diana,
Williamson Donald,
Martin Corby,
Bray George,
Ryan Donna,
Anton Stephen,
Sacks Frank
Publication year - 2014
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.28.1_supplement.811.7
Subject(s) - body mass index , body weight , medicine , weight loss , energy (signal processing) , zoology , demography , obesity , statistics , mathematics , biology , sociology
The aim of this study is to examine trends and patterns between achieved energy intake and prescribed target intake (i.e., dietary adherence). We applied a validated dynamic model that estimates actual energy intake from input of body weight during weight loss, age, height, gender, and baseline weight. Data were analyzed from the POUNDS LOST study (N=654), which tested the efficacy of four weight loss diets that differed in macronutrient compositions. A Bland Altman analysis of actual achieved energy intake to target prescribed energy intake across all diet groups was conducted for the POUNDS LOST participants during the first six months of the intervention. Energy intake exceeded target energy intake by 233.6 ±324.0 kcal/d (mean + SD), reflecting intake that was 11.8% above target energy intake. Achieved intake positively correlated with target intake (R2=0.43) and baseline energy requirements (R2=0.18). There were no significant relationships between the achieved percent over target with gender, body mass index, or baseline body weight; however, these relationships may be revealed by inputting monthly weights for longer duration than the six months examined here. This preliminary analysis provides insight into improving intervention design tailored to individual baseline characteristics.