• Daniel K White, Catrine Tudor-Locke, David T Felson, K Doug Gross, Jingbo Niu, Michael Nevitt, Cora E Lewis, James Torner, and Tuhina Neogi.
• Dept of Physical Therapy and Athletic Training, College of Health and Rehabilitation Sciences, Boston University, Boston, MA 02115, USA. dwtbn@bu.edu
• Arch Phys Med Rehabil. 2013 Apr 1;94(4):711-7.

ObjectiveTo study if step goals (eg, walking 10,000 steps a day) approximate meeting the 2008 Physical Activity Guidelines for Americans.DesignCross-sectional observational cohort.SettingCommunity.ParticipantsPeople with or at high risk of knee OA (N=1788).InterventionsNone.Main Outcome MeasuresObjective physical activity data were collected over 7 consecutive days from people with or at high risk of knee OA participating in the Multicenter Osteoarthritis Study. Using activity monitor data, we determined the proportion that (1) walked ≥10,000 steps per day, (2) met the 2008 Physical Activity Guidelines, and (3) achieved both recommendations.ResultsOf the subjects studied (mean age ± SD, 67±8y; mean body mass index ± SD, 31±6kg/m(2); 60% women), 16.7% of men and 12.6% of women walked ≥10,000 steps per day, while 6% of men and 5% of women met the 2008 Physical Activity Guidelines for Americans. Of those walking ≥10,000 steps per day, 16.7% and 26.7% of men and women, respectively, also met the 2008 Physical Activity Guidelines.ConclusionsAmong this sample of older adults with or at high risk of knee OA, walking ≥10,000 steps a day did not translate into meeting public health guidelines. These findings highlight the disparity between the number of steps believed to be needed per day and the recommended time-intensity guidelines to achieve positive health benefits.Copyright © 2013 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

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