Hideyuki Namba

Learn More
BACKGROUND Questionnaires are commonly used to assess physical activity in large population-based studies because of their low cost and convenience. Many self-report physical activity questionnaires have been shown to be valid and reliable measures, but they are subject to measurement errors and misreporting, often due to lengthy recall periods. Mobile(More)
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(More)
BACKGROUND The use of Web-based physical activity systems has been proposed as an easy method for collecting physical activity data. We have developed a system that has exhibited high accuracy as assessed by the doubly labeled water method. OBJECTIVE The purpose of this study was to collect behavioral data from a large population using our Web-based(More)
  • 1