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. 2015 Jul 3;10:1275–1282. doi: 10.2147/COPD.S84134

Table 5.

Correlation coefficients between % change in PA and % change in pulmonary function tests or ISWT

Variables ≥2.0 METs ≥2.5 METs ≥3.0 METs ≥3.5 METs ≥3.0 METs⋅hr
VC −0.170 −0.102 −0.020 0.277 −0.003
IC −0.130 0.118 0.071 −0.031 0.081
FVC 0.072 0.079 0.114 0.153 0.166
FEV1 −0.116 0.117 0.283 0.302 0.319
FRC −0.296 −0.468a −0.374 0.065 −0.375
RV 0.062 −0.130 −0.209 0.059 −0.235
TLC −0.238 −0.300 −0.304 0.101 −0.316
DLCO −0.186 −0.309 −0.250 −0.298 −0.201
ISWT −0.332 −0.401 −0.123 0.439 −0.059

Note:

a

P<0.05.

Abbreviations: PA, physical activity; ISWT, incremental shuttle walking test; METs, metabolic equivalents; METs·hr, METs multiplied by hours; VC, vital capacity; IC, inspiratory capacity; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; FRC, functional residual capacity; RV, residual volume; TLC, total lung capacity; DLCO, pulmonary carbon monoxide diffusing capacity.