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. Author manuscript; available in PMC: 2008 Dec 29.
Published in final edited form as: Am J Epidemiol. 2008 Mar 14;167(9):1090–1101. doi: 10.1093/aje/kwn025

FIGURE 2.

FIGURE 2

Impact of pulmonary function impairment on functional limitation (skeletal muscle strength), California, 2005-2007. The figure depicts scatterplots of the relation with the fitted regression line. Part A shows the relation between quadriceps strength and forced expiratory volume in 1 second (FEV1). The remaining parts depict the association between the following muscle groups and FEV1: part B, hip flexor strength; part C, hip abductor strength; part D, elbow flexor strength; and part E, grip strength. One pound = 453.5924 g.