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. 2014 Oct 1;9:1069–1079. doi: 10.2147/COPD.S68011

Table 3.

Changes in ventilatory parameters measured at iso-levels before and after PR

Accumulated exercise time ΔVE (L/min) ΔRR (breaths/min) ΔTV (L) ΔIC (L)
Ramponi et al23 at 75% VE 810 minutes at maximum duration Only reported at peak end-exercise −2.0±4.0** +0.08±0.44*
Gigliotti et al20 at WR maximum pre-PR assessment 360 minutes −3.2±7.39** −4.5±6.59** +0.1±0.36** +0.2±0.49**
Skumlien et al22 at 70% of maximum WR 900 minutes −2.6±2.1* −3.1±1.8** +0.02±0.09 +0.06±0.15
Wadell et al21 Iso-time at pre-PR assessment end time 240 minutes at maximum duration −1.8±4.5 Only graphed results Only graphed results +0.06±0.14

Notes: Δ, change in; +, increase; −, decrease;

*

P<0.01;

**

P< 0.05.

Abbreviations: IC, inspiratory capacity; PR, pulmonary rehabilitation; RR, respiratory rate; TV, tidal volume; VE, minute ventilation; WR, work rate.