TY - JOUR

T1 - Characteristics of misreporters of dietary intake and physical activity

AU - Rasmussen, Lone Banke

AU - Matthiessen, Jeppe

AU - Biltoft-Jensen, Anja

AU - Tetens, Inge

N1 - (Ekstern)

PY - 2007

Y1 - 2007

N2 - Objective: To characterise misreporters of energy intake (EI) and energy expenditure (EE). Design: Cross-sectional study, using a validated position and motion instrument, ActiReg®, as the reference method to study misreporters of EI and of EE. EI was measured using a dietary record and EE using a physical activity questionnaire (PAQ). Misreporters were defined as subjects outside the 95% confidence limits of agreement between EI or EE reported/EE measured. Setting: Free-living Danish volunteers. Subjects: One hundred and thirty-eight volunteers aged between 20 and 59 years. Results: Body mass index, smoking, 'try to eat healthily' and worries about weight were related to degree of under-reported EI. The percentage energy from added sugar was lowest (P < 0.001) and the percentage energy from protein (P < 0.001) highest in under-reporters compared with acceptable reporters. Subjects who reported being very physically active at work or in leisure time reported a higher EE than measured EE compared with less physically active subjects (P < 0.05). Likewise, subjects who regard themselves as fit or very fit reported a higher EE than subjects who regard themselves as moderately fit (P < 0.05). Possible over-reporters reported less time as very light activity (P = 0.007), more time as moderate activity (P = 0.01) and more time as vigorous activity (P = 0.02) than acceptable reporters. Conclusions: Under-reporting of EI should always be taken into consideration; however, only a few characteristics of under-reporters are consistent among studies. Misreporting of EI was more prevalent than misreporting of EE. The level of physical activity more than the time spent involved in various activities was misreported.

AB - Objective: To characterise misreporters of energy intake (EI) and energy expenditure (EE). Design: Cross-sectional study, using a validated position and motion instrument, ActiReg®, as the reference method to study misreporters of EI and of EE. EI was measured using a dietary record and EE using a physical activity questionnaire (PAQ). Misreporters were defined as subjects outside the 95% confidence limits of agreement between EI or EE reported/EE measured. Setting: Free-living Danish volunteers. Subjects: One hundred and thirty-eight volunteers aged between 20 and 59 years. Results: Body mass index, smoking, 'try to eat healthily' and worries about weight were related to degree of under-reported EI. The percentage energy from added sugar was lowest (P < 0.001) and the percentage energy from protein (P < 0.001) highest in under-reporters compared with acceptable reporters. Subjects who reported being very physically active at work or in leisure time reported a higher EE than measured EE compared with less physically active subjects (P < 0.05). Likewise, subjects who regard themselves as fit or very fit reported a higher EE than subjects who regard themselves as moderately fit (P < 0.05). Possible over-reporters reported less time as very light activity (P = 0.007), more time as moderate activity (P = 0.01) and more time as vigorous activity (P = 0.02) than acceptable reporters. Conclusions: Under-reporting of EI should always be taken into consideration; however, only a few characteristics of under-reporters are consistent among studies. Misreporting of EI was more prevalent than misreporting of EE. The level of physical activity more than the time spent involved in various activities was misreported.

KW - Dietary records

KW - Energy expenditure

KW - Energy intake

KW - Misreporting

KW - Physical activity

UR - http://www.scopus.com/inward/record.url?scp=34247602540&partnerID=8YFLogxK

U2 - 10.1017/S136898000724666X

DO - 10.1017/S136898000724666X

M3 - Journal article

C2 - 17288619

AN - SCOPUS:34247602540

VL - 10

SP - 230

EP - 237

JO - Public Health Nutrition

JF - Public Health Nutrition

SN - 1368-9800

IS - 3

ER -