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 View Full-text : Current Issue |
| Original articles |
Korean J Intern Med. 2010
June;25(2):132-139.
DOI: 10.3904/kjim.2010.25.2.132
Diet and Airway Obstruction: A Cross Sectional Study from the Second Korean National Health and Nutrition Examination Survey
Jin Hwa Lee1, Yun Su Sim1, Gee Young Suh2, Jeong-Seon Ryu3, Dong Ho Shin4, Kyung Haeng Koh5, Yeon Jae Kim6, Wan Park7, Hyoung Kyu Yoon8, Man Jae Lee9, Jung Hyun Chang1, and the Korean Academy of Tuberculosis and Respiratory Diseases
Department of Internal Medicine, 1Ewha Womans University School of Medicine, Seoul; 2Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul; 3Inha University College of Medicine, Incheon; 4Hanyang University College of Medicine, Seoul; 5Gwangju/Chunnam Chapter of the Korean National Tuberculosis Association, Gwangju; 6Daegu Fatima Hospital, Daegu; 7Mokpo Chunnam Hospital, Mokpo; 8The Catholic University of Korea School of Medicine, Seoul; 9Yeonggwang Christian Hospital, Yeonggwang, Korea |
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Background/Aims: Several dietary factors, such as antioxidant vitamins, have potential roles in the development of obstructive lung diseases. However, the results of studies on the relationships between dietary factors and obstructive lung diseases are inconsistent. The aim of this study was to determine which nutrients are related to airway obstruction (AO) in the Korean population.
Methods: We used data obtained as part of the Korean National Health and Nutrition Examination Survey (NHANES II) in 2001. Analysis was restricted to 1,005 adults who were 18 years of age and older, who had two or more acceptable spirometry curves, and who had participated in the nutrition examination survey. AO was defined as the ratio of forced expiratory volume in one second (FEV1) to forced vital capacity (FVC) of less than 0.7.
Results: Of the 1,005 study subjects, 78 (7.8%) had AO. Statistically significant factors associated with AO were 55 years of age or older (p = 0.032), central obesity (p = 0.047), hypertension (p < 0.001), smoking of 20 packyears or more (p < 0.001), low income (p < 0.001), and low dietary protein intake expressed as a ratio of protein to recommended dietary allowance for Koreans (p = 0.037). Multiple logistic regression analyses revealed four factors that were independently associated with AO: smoking of 20 pack-years or more (odds ratio [OR], 5.801; p < 0.001), hypertension (OR, 3.905; p < 0.001), low protein intake (OR, 0.992; p = 0.004), and low income (OR, 1.962; p = 0.018).
Conclusions: In the Korean NHANES, smoking, hypertension, and low income were related to AO. Among dietary factors, only low protein intake was associated with AO. (Korean J Intern Med 2010;25:132-139)
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Keywords : Airway obstruction; Respiratory function tests; Nutrition surveys; Proteins; Diet |
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