Exercise training with negative pressure ventilation improves exercise capacity in patients with severe restrictive lung disease: a prospective controlled study.

Respir Res · 2013 · PMC3598345 · PMID 23421438

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did not reach statistical significanceno p-value reported

However, the between group differences in either ΔFVC or ΔFEV 1 did not reach statistical significance (Figures 2 B and 3 B).

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