Light intensity physical activity increases and sedentary behavior decreases following total knee arthroplasty in patients with osteoarthritis

Abstract

II.

Improvements in Objectively Measured Activity Behaviors Do Not Correlate With Improvements in Patient-Reported Outcome Measures Following Total Knee Arthroplasty

“…Previous studies have shown that moderate to vigorous PA does not change following TKA [19,20,27]. One possibility of promoting activity behavior change may therefore be to promote smaller and more feasible changes in PA by targeting specific intensities of activity.…”

“…This was a substudy of a comprehensive longitudinal observational study. The details of the study protocol have been previously published [35] and results have also been published [27]. Briefly, presurgery assessments were done 2 weeks before TKA.…”

“…Tools such as the Knee injury and Osteoarthritis Outcome Score (KOOS) and the Oxford Knee Score (OKS) are used to record patients' perceptions of pain, symptoms, and physical function and are commonly used to evaluate short-term and long-term treatment outcomes following joint arthroplasty [29e31]. Given that the activity behavior profile of older adults with knee OA predominantly constitutes low-intensity activities (SB and LPA) [25,27,32] and that these activities are often incidental with activities of daily living [33], the aim of this study is to determine the relationship between objectively measured activity behaviors and patient-reported measures of pain, symptoms, and physical function before and after TKA. The association between the 2 constructs could be used to better understand the clinical utility of objective measures of PA as one of the markers of surgical success, but also to better understand whether improvements in pain and functional ability translate into more time spent being physically active.…”

Does Activity-Based Rehabilitation With Goal Attainment Scaling Increase Physical Activity Among Younger Knee Arthroplasty Patients? Results From the Randomized Controlled ACTION Trial

“…One study found a postoperative increase of 4903 steps/d in a small group of patients [24]. Frimpong et al [14] demonstrated an increase of 50 minutes spent on light PA. Three other studies found no significant difference in walking time, gait cycles, or accelerometer counts at 6 months [9,12,25]. The small PA increase of 9 minutes after 6 months found in our study is therefore more or less in line with the current literature.…”

“…A meta-analysis showed no increase in PA at 6 months and a small-to-moderate increase at 12 months [6]. Finally, Frimpong et al [14] showed an increase in patientreported PA as well as an accelerometer-measured decrease in sedentary behavior (À5.9%) and concomitant increase in light PA (þ5.8%) 6 months after KA.…”