Autor: |
Simone, Kohler, Gundula, Behrens, Matthias, Olden, Sebastian E, Baumeister, Alexander, Horsch, Beate, Fischer, Michael F, Leitzmann |
Rok vydání: |
2017 |
Předmět: |
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Zdroj: |
Journal of Medical Internet Research |
ISSN: |
1438-8871 |
Popis: |
Background Widespread access to the Internet and an increasing number of Internet users offers the opportunity of using Web-based recalls to collect detailed physical activity data in epidemiologic studies. Objective The aim of this investigation was to evaluate the validity and reliability of a computer-based 24-hour physical activity recall (cpar24) instrument with respect to the recalled 24-h period. Methods A random sample of 67 German residents aged 22 to 70 years was instructed to wear an ActiGraph GT3X+ accelerometer for 3 days. Accelerometer counts per min were used to classify activities as sedentary ( |
Databáze: |
OpenAIRE |
Externí odkaz: |
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