Accelerometry data from the National Health and Nutrition Examination Study confirms what has been suspected from self-report: after adolescence, people in the United States are very inactive. With age, even this modest activity declines further. Accelerometry data was collected on a subsample of participants from the Health, Aging, and Body Composition study in the final (tenth) year of clinical examination. We are working with this data to study the paterns of true daily activity in older adults. Additionally, we have collected accelerometry and sleep data in a subsample of participants from the Age, Gene/Environment Susceptibility Study in Iceland. Also, as part of this project, we will compare measurements from accelerometers worn at various locations on the body while eldery participants conduct activities of daily living. And, finally, we are testing the use of accelerometers to assess recovery of function after surgery in the elderly.

National Institute of Health (NIH)
National Institute on Aging (NIA)
Investigator-Initiated Intramural Research Projects (ZIA)
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National Institute on Aging
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van der Berg, Julianne D; Bosma, Hans; Caserotti, Paolo et al. (2014) Midlife determinants associated with sedentary behavior in old age. Med Sci Sports Exerc 46:1359-65
Van Domelen, Dane R; Caserotti, Paolo; Brychta, Robert J et al. (2014) Is there a sex difference in accelerometer counts during walking in older adults? J Phys Act Health 11:626-37
Martin, Kathryn R; Koster, Annemarie; Murphy, Rachel A et al. (2014) Changes in daily activity patterns with age in U.S. men and women: National Health and Nutrition Examination Survey 2003-04 and 2005-06. J Am Geriatr Soc 62:1263-71
He, Bing; Bai, Jiawei; Zipunnikov, Vadim V et al. (2014) Predicting human movement with multiple accelerometers using movelets. Med Sci Sports Exerc 46:1859-66