Low pulmonary function in individuals with impaired fasting glucose: the 2007-2009 Korea national health and nutrition examination survey.

OBJECTIVE: To investigate the association between fasting plasma glucose level and pulmonary function. RESEARCH DESIGN AND METHODS: Nutritional information, pulmonary function data, and laboratory test data from 9,223 subjects from the fourth Korea National Health and Nutrition Examination Survey were examined. The participants were divided into five groups according to fasting plasma glucose (FPG) level: normal fasting glucose (NFG)1, FPG