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Physical Function Indicators Associated with Reduced Work Productivity and Estimated Economic Loss in Employed
Takeshi Yamazaki1, Takumi Nagayama2, Michiko Tsuchiya3
1Faculty of Health Sciences, Department of Physical Therapy, Kyoto Tachibana University, Kyoto, Japan.
Objective:
This cross-sectional study investigated physical factors associated with dyspnea-related work productivity loss among employed individuals with respiratory diseases, estimating annual economic loss.
Methods:
Fifty-one employed individuals undergoing respiratory rehabilitation at our Hospital (April 2023-August 2024) were enrolled. The Quantity and Quality method assessed work productivity. Physical function was evaluated through pulmonary tests, grip and knee extension strength, SpO₂, pulse rate, respiratory rate, 6-minute walk distance (6MWD), recovery time, and Borg scale ratings.
Results:
Twenty-nine participants were analyzed. Reduced work productivity correlated with decreased FEV₁/FVC, decreased Nagasaki University Respiratory Activities of Daily Living scores, decreased 6MWD, and extended recovery time. Annual productivity loss averaged 42%. 6MWD independently predicted productivity loss, with ≤220 m strongly indicating risk.
Conclusion:
6MWD predicts dyspnea-related productivity loss; monitoring exercise tolerance may help maintain work productivity in respiratory disease.
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