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Physical activity a...
Physical activity assessed by activity monitor and doubly labeled water in children
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- Ekelund, Ulf, 1960- (author)
- Örebro universitet,Institutionen för hälsovetenskap och medicin,Unit for Preventive Nutrition, Department of Medical Nutrition, Karolinska Institutet, Stockholm, Sweden,Örebro universitet, Institutionen för hälsovetenskap och medicin
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- Sjöström, Michael (author)
- Karolinska Institutet
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- Yngve, Agneta, 1953- (author)
- Karolinska Institutet
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- Poortvliet, Eric (author)
- Karolinska Institutet
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- Nilsson, Andreas, 1973- (author)
- Örebro universitet,Institutionen för hälsovetenskap och medicin,RISPA,Örebro universitet, Institutionen för hälsovetenskap och medicin
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- Fröberg, Karsten (author)
- Institute of Sport Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
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- Wedderkopp, Niels (author)
- Institute of Sport Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
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- Westerterp, Klaas (author)
- Department of Human Biology, Maastricht University, Maastricht, The Netherlands
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- Ovid Technologies (Wolters Kluwer Health), 2001
- 2001
- English.
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In: Medicine & Science in Sports & Exercise. - : Ovid Technologies (Wolters Kluwer Health). - 0195-9131 .- 1530-0315. ; 33:2, s. 275-281
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Abstract
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- PURPOSE: To validate the Computer Science and Application's (CSA) activity monitor for assessment of the total amount of physical activity during two school-weeks in 9-yr-old children and to develop equations to predict total energy expenditure (TEE) and activity energy expenditure (AEE) from activity counts and anthropometric variables.METHODS: A total of 26 children (15 boys and 11 girls, mean age 9.1 +/- 0.3 yr) were monitored for 14 consecutive days. TEE was simultaneously measured by the doubly labeled water method. Averaged activity counts (counts.min(-1)) were compared with data on: 1) TEE, 2) AEE = TEE minus basal metabolic rate (BMR; estimated from predictive equations), and 3) daily physical activity level (PAL = TEE/BMR).RESULTS: Physical activity determined by activity counts was significantly related to the data on energy expenditures: TEE (r = 0.39; P < 0.05), AEE (r = 0.54; P < 0.01), and PAL (r = 0.58; P < 0.01). Multiple stepwise regression analysis showed that TEE was significantly influenced by gender, body composition (body weight or fat free mass), and activity counts (R(2) = 0.54--0.60). AEE was significantly influenced by activity counts and gender (R(2) = 0.45). There were no significant differences between activity counts and PAL in discriminating among activity levels with "low" (PAL < 1.56), "moderate" (1.57 < or = PAL > or = 1.81), and "high" (PAL > 1.81) intensity.CONCLUSION: Activity counts from the CSA activity monitor seems to be a useful measure of the total amount of physical activity in 9-yr-old children. Activity counts contributed significantly to the explained variation in TEE and was the best predictor of AEE.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Fysiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Physiology (hsv//eng)
Keyword
- Accelerometer; Daily activity; Energy expenditure
- Fysiologi
- Physiology
- Sports Science
- Idrottsvetenskap
Publication and Content Type
- ref (subject category)
- art (subject category)
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Ekelund, Ulf, 19 ...
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Sjöström, Michae ...
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Yngve, Agneta, 1 ...
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Poortvliet, Eric
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Nilsson, Andreas ...
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Fröberg, Karsten
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Wedderkopp, Niel ...
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Westerterp, Klaa ...
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Health Sciences
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and Sport and Fitnes ...
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Basic Medicine
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and Physiology
- Articles in the publication
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Medicine & Scien ...
- By the university
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Örebro University
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Uppsala University
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Karolinska Institutet