Prolonged bouts of sedentary behavior in people with chronic obstructive pulmonary disease and associated factors.
Katelyn E Webster-Dekker, Weijiao Zhou, Seoyoon Woo and 3 others
PMID 37499548WHAT IT FOUND
Inactive adults with COPD spent 34% of sedentary time in bouts of 60 minutes or longer.
Lower confidence for light activity, poorer balance, and lower chair-stand scores were linked with more prolonged sitting.
Key findings
01Participants spent a mean of 742 ± 150 min./day in total sedentary time during waking hours and 254 ± 146 min./day in prolonged sedentary bouts lasting 60 min. or longer, which was 34% of total sedentary time.
02Self-efficacy for light PA, SPPB balance, and SPPB chair stand scores were negatively associated with time spent in prolonged sedentary bouts.
03Time spent in prolonged sedentary bouts was negatively associated with FEV1 % predicted and positively associated with higher BMI.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
This was a cross-sectional secondary analysis, so it cannot show that changing self-efficacy, balance, strength, BMI, or airflow obstruction causes less prolonged sedentary time. The authors could not control the sample size or the variables available in the parent exercise study. Participants were inactive adults with COPD who were functional and mobile enough to consider an exercise program, and the sample was primarily white. Height and weight were self-reported, which likely contributed to BMI measurement error. 14% of participants were missing data from any variable, though overall missing data was 2.5%.
Declared interests
All authors declared no conflicts of interest.
The easy way to misread this
Do not conclude that improving self-efficacy, balance, or chair-stand strength will reduce prolonged sitting. This was a cross-sectional analysis of associations, so it did not test whether changing any factor changes sedentary behavior.