San Diego, CA, February 5, 2013 Understanding the relationships between lifestyle behaviors and health outcomes can be enhanced by the use of wearable cameras, concludes a collection of studies in a special theme issue of the American Journal of Preventive Medicine. Three studies report on the latest preventive medicine research using Microsoft's wearable camera, the SenseCam.
"Wearable cameras and their associated software analysis tools have developed to the point that they now appear well suited to measure sedentary behavior, active travel, and nutrition-related behaviors," says author Aiden R. Doherty, PhD, from the Department of Public Health at the University of Oxford, United Kingdom. "Individuals may recall events more accurately after reviewing images from their wearable cameras, and in addition aspects of their immediate cognitive functioning may also improve."
A paper titled "Using the SenseCam to Improve Classifications of Sedentary Behavior in Free-Living Settings," shows, for example, the advantages of wearable cameras over accelerometers in providing both type and context information about sedentary behavior. Jacqueline Kerr and colleagues found that while TV viewing, other screen use, and administrative activities were correctly classified by accelerometers, the standing postures are often misclassifıed as sedentary behavior. Additionally, a nearly 30-minute per day difference was found in sedentary behavior estimates based on the accelerometer versus the SenseCam.
A study by researchers in Ireland analyzes how wearable cameras were employed to improve the recording of dietary intake among jockeys, Gaelic footballers, and physically active college students. The researchers, led by Gillian O'Loughlin of Dublin City University, report that images from the SenseCam provide additional information regarding dietary intake patterns, such as portion size, forgotten foods, leftovers, and brand names. Using wear
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Elsevier Health Sciences