Increased Free-Living Brisk Walking Cadence Following a Physical Activity Behavior Intervention After Total Knee Arthroplasty: A Secondary Analysis of a Randomized Controlled Trial.
Paul W Kline, Rashelle M Hoffman, Shawn L Hanlon and 5 others
PMID 40185221WHAT IT FOUND
Veterans who added a behavior change program to standard knee replacement rehab walked significantly more minutes per day at a brisk pace than those receiving health education alone.
This increase lasted six months. Total walking time, sitting, and standing did not change.
Key findings
01The behavior change group increased daily minutes of brisk walking by 4.9 minutes at week 14 and 6.38 minutes at week 38 compared to baseline, while the control group showed no significant change.
02There was a significant between-group difference in daily brisk walking duration of 8.36 minutes favoring the behavior change group at week 38.
03Total time spent walking, standing, or sitting did not significantly differ between groups or change from baseline at any time point.
STILL TO COME
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What it does not show
The sample consisted exclusively of United States Military Veterans and was predominantly male (88%), limiting generalizability to non-Veterans or female patients. The study was a secondary analysis, and the parent trial used highly standardized rehabilitation visits and activities that may not reflect typical clinical care settings. Four participants were excluded from the analysis due to lack of valid accelerometry data. The intervention did not specifically target reducing sedentary time or increasing standing time, so these outcomes were not expected to change.
Declared interests
The trial was funded by the Veterans Affairs Eastern Colorado Health Care System and the National Institutes of Health. The authors declared no other conflicts of interest.
The easy way to misread this
Do not assume that the increase in brisk walking minutes represents an overall increase in physical activity volume. Total walking time, standing time, and sitting time remained unchanged, indicating that participants replaced low-intensity walking bouts with higher-intensity brisk walking rather than moving more overall.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →