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Validity of reported energy expenditure and energy and protein intakes of Swedish vegan and omnivore adolescents
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- Larsson, Christel, 1972- (author)
- Umeå universitet,Institutionen för kostvetenskap
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- Westerterp, Klaas R (author)
- Department of Human Biology, Maastricht University, Maastricht, Netherlands
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- Johansson, Gunnar (author)
- Umeå universitet,Institutionen för kostvetenskap
- (creator_code:org_t)
- Bethesda : American society of clinical nutrition, 2002
- 2002
- English.
- In: American Journal of Clinical Nutrition. - Bethesda : American society of clinical nutrition. - 0002-9165 .- 1938-3207. ; 75:2, s. 268-274
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Background: It is difficult to obtain accurate reports of dietary intake; therefore, reported dietary intakes must be validated. Researchers need low-cost methods of estimating energy expenditure to validate reports of energy intake in groups with different lifestyles and eating habits.Objective: We sought to validate the reported energy expenditure and energy and protein intakes of Swedish adolescent vegans and omnivores.Design: We compared 16 vegans (7 females and 9 males; mean age: 17.4 ± 0.8 y) with 16 omnivores matched for sex, age, and height. Energy expenditure as reported in a physical activity interview and energy and protein intakes as reported by diet history were validated by using the doubly labeled water method and by measuring urinary nitrogen excretion.Results: The validity of reported energy expenditure and energy and protein intakes was not significantly different between vegans and omnivores. The physical activity interview had a bias toward underestimating energy expenditure by 1.4 ± 2.6 MJ/d (95% CI: 2.4, 0.5 MJ/d). The diet-history interview had a bias toward underestimating energy intake by 1.9 ± 2.7 MJ/d (95% CI: 2.9, 1.0 MJ/d) but showed good agreement with the validation method for nitrogen (protein) intake (underestimate of 0.40 ± 1.90 g N/d; 95% CI: 1.10, 0.29 g N/d).Conclusions: The physical activity and diet-history interviews underestimated energy expenditure and energy intake, respectively. Energy intake and expenditure were underestimated to the same extent, and the degree of underestimation was not significantly different between vegans and omnivores. Valid protein intakes were obtained with the diet-history method for both vegans and omnivores.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Näringslära (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Nutrition and Dietetics (hsv//eng)
Keyword
- Vegetarian
- vegan
- omnivore
- adolescent
- energy expenditure
- energy intake
- protein intake
- physical activity
- dietary assessment
- doubly labeled water
- biological markers
- Kostvetenskap
- Food and Nutrition
Publication and Content Type
- ref (subject category)
- art (subject category)
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