Knee osteoarthritis

Knee osteoarthritis (KOA) is the leading cause of pain, mobility, and disability amongst older adults. Physical activity is for the management of KOA; as it can effectively improve symptoms including joint pain; as well as physical function and quality of life. Despite the benefits of physical activity; persons with KOA engage in less physical activity compared to their healthy counterparts; failing to achieve recommended public health guidelines.
Physical activity participation in this clinical population; is influence by numerous factors (e.g., personal, social, bodily, situational, and environmental ). Of particular interest is disease pain; which is one of the most consistently cited barriers to physical activity in KOA. The question of whether the pain is with physical activity in KOA has the focus of ample work; including systematic reviews.

Pain and physical activity

Nonetheless, the link between pain and physical activity remains ambiguous. Inconsistencies in study findings are  Accepted Article This article is by copyright. All rights reserved. likely attributable to the heterogeneity in the methods used to measure physical activity. To reduce self-report biases, use of objective measures such as accelerometry is recommending.

Objectively -measured physical activity has been characterized in various ways; including activity frequency (e.g., steps/day) (5,6,13,16 –18) and intensity (e.g., light,moderate, vigorous). Few KOA studies have formally investigated the association of pain with physical activity; measured objectively as steps per day. Cross-sectionally; pain intensity during activities of daily living was not correlated with steps per day in 160 sedentary; overweight/obese adults.

Frequent knee pain

Only one known longitudinal study directly assessed the relationship between pain and steps per day. No association with  between each of consistent frequent knee pain at baseline and worsening knee pain over 2 years and change in physical activity over 2 years in 1,318 older community-dwelling adults at risk or with radiographic evidence of KOA. All covariates[age (β=-3.65; p<0.001), body mass index (β=-3.06; p<0.001), season spring/fallβ=-6.91; p=0.002,winter=-14.92; p<0.001)] were predictors of physical activity.
In conclusion, neither the inverted KOOS -pain (β=0.04; p=0.717) nor P4-pain (β-0.37; p=0.264) with physical activity. Knee pain is not with daily walking levels; in persons with mild-to-moderate; symptomatic KOA. While pain management remains an important target of interventions; strategies to increase steps per day in this population should focus on overcoming potentially more crucial barriers to activity participation.