This study analyzed the impact of restrictive spirometric pattern (RSP) severity on nutrition, physical activity, and quality of life using data from the Korea National Health and Nutrition Examination Survey (2007-2016). Participants were categorized into normal spirometry, mild-to-moderate RSP, and severe RSP groups. Those with severe RSP exhibited lower education levels, reduced caloric intake, decreased physical activity, a higher prevalence of comorbidities, and poorer quality of life compared to those with normal spirometry. Multivariable analysis confirmed these associations, particularly a significant decrease in caloric intake and poorer quality of life in both mild-to-moderate and severe RSP groups. These trends were more pronounced in males. The study highlights the correlation between RSP severity and reduced health status, emphasizing the need for considering RSP severity in clinical management.

Sung Jun Chung, Hwan II Kim, Bumhee Yang, Taehee Kim, Yun Su Sim, Hyung Koo Kang, Sang-Heon Kim, Ho Joo Yoon, Hayoung Choi, Hyun Lee