Research Paper Title
Relation of Physical Activity Time to Incident Disability in Community Dwelling Adults With or At Risk of Knee Arthritis: Prospective Cohort Study.
Is objectively measured time spent in light physical activity related to incident disability independent of moderate-vigorous activity time and other predictors of risk of disability in adults with or at risk of knee arthritis?
Greater daily time spent in light intensity physical activities was significantly related to a reduced risk of developing disability and a reduced risk of disability progression, independent of the time spent in moderate or vigorous activities and other predictors of disability risk.
What is Known and What This Paper Adds
Physical activity guidelines recommend engaging in moderate-vigorous intensity physical activity, but whether that intensity is needed to reduce disability is not known. The findings of this study suggest that more time spent being physically active reduces the risk of disability even if the intensity of activity is not increased.
An underlying message of this paper is that every little helps!
Dunlop, D.D., Song, J., Semanik, P.A., Sharma, L., Bathon, J.M., Eaton, C.B., Hochberg, M.C., Jackson, R.D., Kwoh, C.K., Mysiw, W.J., Nevitt, M.C. & Chang, R.W. (2014) Relation of Physical Activity Time to Incident Disability in Community Dwelling Adults With or At Risk of Knee Arthritis: Prospective Cohort Study. British Medical Journal. BMJ 2014;348:g2472.