Tracking of nutrient intakes in adolescence: the experiences of the Young Hearts Project, Northern Ireland

PJ Robson, AM Gallagher, MBE Livingstone, GW Cran, JJ Strain, JM Savage, CAG Boreham

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Abstract

This study evaluated the tracking of energy and nutrient intakes, assessed by diet history, in a random sample of adolescents (boys n 225, girls n 230) at baseline (age 12 years), and subsequently at age 15 years. Median energy (MJ/d) and macronutrient (g/d) intakes increased significantly (P<0.001) with increasing age in the boys. The girls' reported energy intake (MJ/d) remained stable over time, despite significant increases in BMI, weight and % body fat. Age-related changes in the girls' macronutrient intakes were inconsistent. When expressed in terms of nutrient density, the diets of both sexes became significantly richer, over time, in total folate (both sexes, P<0.01), but poorer in Ca (boys P<0.01, girls P<0.001) and riboflavin (both sexes P<0.001). Vitamin B-6 (P<0.001) and Fe (P<0.05) densities increased in the boys, while the thiamin density of the girls' diets decreased (P<0.001). Tracking, defined as maintenance of rank over time, was summarised using weighted kappa statistics (kappa). There were some significant changes in intakes at the group level; however, tracking of energy and nutrients in both sexes was only poor to fair (kappa <0.40), indicating substantial drift of individuals between classes of intake over time. Particularly poor tracking was evident for % energy from sugars (kappa 0.09) and total fat (kappa 0.09) in the girls' diets. In conclusion, the poor to fair tracking observed in this cohort suggests that individual dietary patterns exhibited at 12 years of age are unlikely to be predictive of energy and nutrient intake at age 15 years.
LanguageEnglish
Pages541-548
JournalBRITISH JOURNAL OF NUTRITION
Volume84
Issue number4
Publication statusPublished - Oct 2000

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Northern Ireland
nutrient intake
heart
energy intake
gender
energy
diet
nutrient density
diet history
pyridoxine
riboflavin
thiamin
eating habits
folic acid
body fat
statistics
sugars
nutrients
lipids

Cite this

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title = "Tracking of nutrient intakes in adolescence: the experiences of the Young Hearts Project, Northern Ireland",
abstract = "This study evaluated the tracking of energy and nutrient intakes, assessed by diet history, in a random sample of adolescents (boys n 225, girls n 230) at baseline (age 12 years), and subsequently at age 15 years. Median energy (MJ/d) and macronutrient (g/d) intakes increased significantly (P<0.001) with increasing age in the boys. The girls' reported energy intake (MJ/d) remained stable over time, despite significant increases in BMI, weight and {\%} body fat. Age-related changes in the girls' macronutrient intakes were inconsistent. When expressed in terms of nutrient density, the diets of both sexes became significantly richer, over time, in total folate (both sexes, P<0.01), but poorer in Ca (boys P<0.01, girls P<0.001) and riboflavin (both sexes P<0.001). Vitamin B-6 (P<0.001) and Fe (P<0.05) densities increased in the boys, while the thiamin density of the girls' diets decreased (P<0.001). Tracking, defined as maintenance of rank over time, was summarised using weighted kappa statistics (kappa). There were some significant changes in intakes at the group level; however, tracking of energy and nutrients in both sexes was only poor to fair (kappa <0.40), indicating substantial drift of individuals between classes of intake over time. Particularly poor tracking was evident for {\%} energy from sugars (kappa 0.09) and total fat (kappa 0.09) in the girls' diets. In conclusion, the poor to fair tracking observed in this cohort suggests that individual dietary patterns exhibited at 12 years of age are unlikely to be predictive of energy and nutrient intake at age 15 years.",
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Tracking of nutrient intakes in adolescence: the experiences of the Young Hearts Project, Northern Ireland. / Robson, PJ; Gallagher, AM; Livingstone, MBE; Cran, GW; Strain, JJ; Savage, JM; Boreham, CAG.

In: BRITISH JOURNAL OF NUTRITION, Vol. 84, No. 4, 10.2000, p. 541-548.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tracking of nutrient intakes in adolescence: the experiences of the Young Hearts Project, Northern Ireland

AU - Robson, PJ

AU - Gallagher, AM

AU - Livingstone, MBE

AU - Cran, GW

AU - Strain, JJ

AU - Savage, JM

AU - Boreham, CAG

PY - 2000/10

Y1 - 2000/10

N2 - This study evaluated the tracking of energy and nutrient intakes, assessed by diet history, in a random sample of adolescents (boys n 225, girls n 230) at baseline (age 12 years), and subsequently at age 15 years. Median energy (MJ/d) and macronutrient (g/d) intakes increased significantly (P<0.001) with increasing age in the boys. The girls' reported energy intake (MJ/d) remained stable over time, despite significant increases in BMI, weight and % body fat. Age-related changes in the girls' macronutrient intakes were inconsistent. When expressed in terms of nutrient density, the diets of both sexes became significantly richer, over time, in total folate (both sexes, P<0.01), but poorer in Ca (boys P<0.01, girls P<0.001) and riboflavin (both sexes P<0.001). Vitamin B-6 (P<0.001) and Fe (P<0.05) densities increased in the boys, while the thiamin density of the girls' diets decreased (P<0.001). Tracking, defined as maintenance of rank over time, was summarised using weighted kappa statistics (kappa). There were some significant changes in intakes at the group level; however, tracking of energy and nutrients in both sexes was only poor to fair (kappa <0.40), indicating substantial drift of individuals between classes of intake over time. Particularly poor tracking was evident for % energy from sugars (kappa 0.09) and total fat (kappa 0.09) in the girls' diets. In conclusion, the poor to fair tracking observed in this cohort suggests that individual dietary patterns exhibited at 12 years of age are unlikely to be predictive of energy and nutrient intake at age 15 years.

AB - This study evaluated the tracking of energy and nutrient intakes, assessed by diet history, in a random sample of adolescents (boys n 225, girls n 230) at baseline (age 12 years), and subsequently at age 15 years. Median energy (MJ/d) and macronutrient (g/d) intakes increased significantly (P<0.001) with increasing age in the boys. The girls' reported energy intake (MJ/d) remained stable over time, despite significant increases in BMI, weight and % body fat. Age-related changes in the girls' macronutrient intakes were inconsistent. When expressed in terms of nutrient density, the diets of both sexes became significantly richer, over time, in total folate (both sexes, P<0.01), but poorer in Ca (boys P<0.01, girls P<0.001) and riboflavin (both sexes P<0.001). Vitamin B-6 (P<0.001) and Fe (P<0.05) densities increased in the boys, while the thiamin density of the girls' diets decreased (P<0.001). Tracking, defined as maintenance of rank over time, was summarised using weighted kappa statistics (kappa). There were some significant changes in intakes at the group level; however, tracking of energy and nutrients in both sexes was only poor to fair (kappa <0.40), indicating substantial drift of individuals between classes of intake over time. Particularly poor tracking was evident for % energy from sugars (kappa 0.09) and total fat (kappa 0.09) in the girls' diets. In conclusion, the poor to fair tracking observed in this cohort suggests that individual dietary patterns exhibited at 12 years of age are unlikely to be predictive of energy and nutrient intake at age 15 years.

M3 - Article

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SP - 541

EP - 548

JO - British Journal of Nutrition

T2 - British Journal of Nutrition

JF - British Journal of Nutrition

SN - 0007-1145

IS - 4

ER -