Abstract
Objective
To study if step goals (eg, walking 10,000 steps a day) approximate meeting the 2008
Physical Activity Guidelines for Americans.
Design
Cross-sectional observational cohort.
Setting
Community.
Participants
People with or at high risk of knee OA (N=1788).
Interventions
None.
Main Outcome Measures
Objective 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.
Results
Of the subjects studied (mean age ± SD, 67±8y; mean body mass index ± SD, 31±6kg/m2; 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.
Conclusions
Among 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.
Keywords
List of abbreviations:
BMI (body mass index), CI (confidence interval), DHHS (Department of Health and Human Services), MOST (Multicenter Osteoarthritis Study), OA (osteoarthritis), ROC (receiver operating characteristic)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: December 10, 2012
Footnotes
Supported by Boston University (grant no. NIH AG18820, grant no. NIAMS K23AR055127, grant no. R24HD0065688, an ACR/REF Rheumatology Investigator Award, an Arthritis Foundation Arthritis Investigator Award, Boston Claude D. Pepper Older Americans Independence Center grant no. P30-AG031679, and a Foundation for Physical Therapy grant), the University of Iowa (grant no. AG 18832), the University of Alabama at Birmingham (grant no. AG 18947), and the University of California San Francisco (grant no. AG 19069).
No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit on the authors or on any organization with which the authors are associated.
Identification
Copyright
© 2013 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.
