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183], '<h3>METHODS:</h3>': [55], 'Forty-five': [56], 'stable': [59, 184], 'COPD': [60, 223], '(mean': [61], 'pre-bronchodilator': [62], 'FEV<sub>1</sub>:': [63], '47': [64], '±': [65], '18%': [66], 'predicted)': [67], 'underwent': [68], '6MWT.': [70], 'Body': [71], 'plethysmography': [72], 'performed': [74], 'immediately': [75, 189, 213], 'pre-': [76], 'post-6MWT.': [78], '<h3>RESULTS:</h3>': [79], 'Correlations': [80], 'were': [81, 110], 'generally': [82], 'stronger': [83], 'between': [84, 93], 'post-6MWT': [89], 'than': [92, 199], 'pre-6MWT': [98], 'volumes,': [100], 'except': [101, 206], 'for': [102, 112, 207, 224], 'FEV<sub>1</sub>.': [103, 208], 'These': [104], 'differences': [105], 'Pearson': [107], 'correlation': [108], 'coefficients': [109], 'significant': [111], 'residual': [113, 131, 172], 'volume': [114, 132], 'expressed': [115, 133], 'as': [116, 134], 'percent': [117, 128, 135, 155, 168], 'total': [119, 137], 'capacity': [121, 139, 148, 160, 173], '(−0.67': [122], 'vs': [123, 141, 150, 162, 175], '−0.58,': [124], '<i>P</i>': [125, 143, 152, 164, 177], '=': [126, 144, 153, 165, 178], '.043),': [127], 'predicted': [130, 157, 170], '(−0.68': [140], '−0.59,': [142], '.026),': [145], 'inspiratory': [146, 158], 'vital': [147, 159], '(0.65': [149], '0.54,': [151], '.019),': [154], '(0.49': [161], '0.38,': [163], '.037),': [166], 'functional': [171], '(−0.62': [174], '−0.47,': [176], '.023).': [179], '<h3>CONCLUSIONS:</h3>': [180], 'In': [181], 'COPD,': [185], '6MWT': [191], 'are': [192], 'more': [193], 'closely': [194], 'related': [195], 'baseline': [200, 240], '6MWT,': [205], 'Therefore,': [209], 'pulmonary': [210, 241], 'function': [211, 242], 'testing': [212, 243], 'should': [216], 'be': [217, 236], 'included': [218], 'future': [220], 'studies': [221], 'on': [222], 'assessment': [226], 'constraints': [230], 'physical': [232], 'performance': [233], 'cannot': [235], 'adequately': [237], 'assessed': [238], 'from': [239], 'at': [244], 'rest.': [245]}, 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