Accuracy of Self-Reported Physical Activity Levels in Obese Adolescents
Introduction. Self-reported measures of habitual physical activity rely completely on the respondent’s ability to provide accurate information on their own physical activity behaviours. Our aim was to investigate if obese adolescents could accurately report their physical activity levels (PAL) using...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Nutrition and Metabolism |
| Online Access: | http://dx.doi.org/10.1155/2014/808659 |
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| author | Sarah A. Elliott Kimberley A. Baxter Peter S. W. Davies Helen Truby |
| author_facet | Sarah A. Elliott Kimberley A. Baxter Peter S. W. Davies Helen Truby |
| author_sort | Sarah A. Elliott |
| collection | DOAJ |
| description | Introduction. Self-reported measures of habitual physical activity rely completely on the respondent’s ability to provide accurate information on their own physical activity behaviours. Our aim was to investigate if obese adolescents could accurately report their physical activity levels (PAL) using self-reported diaries. Methods. Total energy expenditure (TEE) was measured using doubly labelled water (DLW) and resting energy expenditure (REE) was measured via indirect calorimetry. Activity energy expenditure (AEE) and PAL values were derived from measured TEE and REE. Self-reported, four-day activity diaries were used to calculate daily MET values and averaged to give an estimated PAL value (ePAL). Results. Twenty-two obese adolescents, mean age 13.2±1.8 years, mean BMI 31.3±4.6 kg/m2, completed the study. No significant differences between mean measured and estimated PAL values were observed (1.37±0.13 versus 1.40±0.34, P=0.74). Bland Altman analysis illustrated a significant relationship (r=-0.76, P<0.05) between the two methods; thus the bias was not consistent across a range of physical activity levels, with the more inactive overreporting their physical activity. Conclusion. At an individual level, obese adolescents are unlikely to be able to provide an accurate estimation of their own activity. |
| format | Article |
| id | doaj-art-c4974d5b09ac4ec99fac084cec3d7dbd |
| institution | DOAJ |
| issn | 2090-0724 2090-0732 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
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| series | Journal of Nutrition and Metabolism |
| spelling | doaj-art-c4974d5b09ac4ec99fac084cec3d7dbd2025-08-20T03:23:07ZengWileyJournal of Nutrition and Metabolism2090-07242090-07322014-01-01201410.1155/2014/808659808659Accuracy of Self-Reported Physical Activity Levels in Obese AdolescentsSarah A. Elliott0Kimberley A. Baxter1Peter S. W. Davies2Helen Truby3Children’s Nutrition Research Centre, Queensland Children’s Medical Research Institute, Royal Children’s Hospital, The University of Queensland, Herston, QLD 4029, AustraliaChildren’s Nutrition Research Centre, Queensland Children’s Medical Research Institute, Royal Children’s Hospital, The University of Queensland, Herston, QLD 4029, AustraliaChildren’s Nutrition Research Centre, Queensland Children’s Medical Research Institute, Royal Children’s Hospital, The University of Queensland, Herston, QLD 4029, AustraliaDepartment of Nutrition and Dietetics, Faculty of Medicine, Nursing and Health Sciences, Monash University, Notting Hill, VIC 3168, AustraliaIntroduction. Self-reported measures of habitual physical activity rely completely on the respondent’s ability to provide accurate information on their own physical activity behaviours. Our aim was to investigate if obese adolescents could accurately report their physical activity levels (PAL) using self-reported diaries. Methods. Total energy expenditure (TEE) was measured using doubly labelled water (DLW) and resting energy expenditure (REE) was measured via indirect calorimetry. Activity energy expenditure (AEE) and PAL values were derived from measured TEE and REE. Self-reported, four-day activity diaries were used to calculate daily MET values and averaged to give an estimated PAL value (ePAL). Results. Twenty-two obese adolescents, mean age 13.2±1.8 years, mean BMI 31.3±4.6 kg/m2, completed the study. No significant differences between mean measured and estimated PAL values were observed (1.37±0.13 versus 1.40±0.34, P=0.74). Bland Altman analysis illustrated a significant relationship (r=-0.76, P<0.05) between the two methods; thus the bias was not consistent across a range of physical activity levels, with the more inactive overreporting their physical activity. Conclusion. At an individual level, obese adolescents are unlikely to be able to provide an accurate estimation of their own activity.http://dx.doi.org/10.1155/2014/808659 |
| spellingShingle | Sarah A. Elliott Kimberley A. Baxter Peter S. W. Davies Helen Truby Accuracy of Self-Reported Physical Activity Levels in Obese Adolescents Journal of Nutrition and Metabolism |
| title | Accuracy of Self-Reported Physical Activity Levels in Obese Adolescents |
| title_full | Accuracy of Self-Reported Physical Activity Levels in Obese Adolescents |
| title_fullStr | Accuracy of Self-Reported Physical Activity Levels in Obese Adolescents |
| title_full_unstemmed | Accuracy of Self-Reported Physical Activity Levels in Obese Adolescents |
| title_short | Accuracy of Self-Reported Physical Activity Levels in Obese Adolescents |
| title_sort | accuracy of self reported physical activity levels in obese adolescents |
| url | http://dx.doi.org/10.1155/2014/808659 |
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