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. 2020 Mar 12;45(6):1644–1660. doi: 10.3892/ijmm.2020.4537

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Copyright: © Li et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Results of OPLS-DA. (A) Score scatter plot of the OPLS-DA model for CG vs. CMG. (B) Score scatter plot of the OPLS-DA model for CMG vs. CEG. (C) Permutation test of the OPLS-DA model for CG vs. CMG. (D) Permutation test of the OPLS-DA model for CMG vs. CEG. CMG, COPD model group; CEG, COPD plus exercise group; CG, control group; OPLS-DA, orthogonal projections to latent structures-discriminant analysis; COPD, chronic obstructive pulmonary disease; CMG, COPD model group; CEG, COPD + exercise group; CG, control group.