Simultaneous Validation of Seven Physical Activity Questionnaires Used in Japanese Cohorts for Estimating Energy Expenditure: A Doubly Labeled Water Study
نویسندگان
چکیده
منابع مشابه
Comparison of energy expenditure estimates from 4 physical activity questionnaires with doubly labeled water estimates in postmenopausal women.
BACKGROUND Physical activity energy expenditure (EE) is an important determinant of health, and epidemiologists have used various methods, such as physical activity and energy intake recalls and records, to estimate energy cost. However, most epidemiologic studies have not validated these methods against the doubly labeled water (DLW) technique for measuring EE. OBJECTIVE The aim was to compa...
متن کاملEstimation of doubly labeled water energy expenditure with confidence intervals.
Bivariate regression is used to estimate energy expenditure from doubly labeled water data. Two straight lines are fitted to the logarithms of the enrichments of oxygen-18 and deuterium simultaneously as a bivariate regression, so that the correlations between the oxygen and deuterium regression coefficients can be estimated. Maximum likelihood methods are used to extend bivariate regression to...
متن کاملUse of Doubly Labeled Water to Validate a Physical Activity Questionnaire Developed for the Japanese Population
BACKGROUND No study has attempted to use the doubly labeled water (DLW) method to validate a physical activity questionnaire administered to a Japanese population. The development and refinement of such questionnaires require that physical activity components related to physical activity level be examined. METHODS Among 226 Japanese men and women 20 to 83 years of age, total energy expenditur...
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To further validate the doubly labeled water method for measurement of CO2 production and energy expenditure in humans, we compared it with near-continuous respiratory gas exchange in nine healthy young adult males. Subjects were housed in a respiratory chamber for 4 days. Each received 2H2(18)O at either a low (n = 6) or a moderate (n = 3) isotope dose. Low and moderate doses produced initial ...
متن کاملValidation of Web-Based Physical Activity Measurement Systems Using Doubly Labeled Water
BACKGROUND Online or Web-based measurement systems have been proposed as convenient methods for collecting physical activity data. We developed two Web-based physical activity systems-the 24-hour Physical Activity Record Web (24hPAR WEB) and 7 days Recall Web (7daysRecall WEB). OBJECTIVE To examine the validity of two Web-based physical activity measurement systems using the doubly labeled wa...
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ژورنال
عنوان ژورنال: Journal of Epidemiology
سال: 2018
ISSN: 0917-5040,1349-9092
DOI: 10.2188/jea.je20170129