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. 2022 Oct 23;5(2):106–111. doi: 10.1016/j.smhs.2022.10.004

Fig. 2.

Fig. 2

Breathing reserve alteration in cardiopulmonary exercise testing during resting phase, main test and recovery, between the groups. ∗p < 0.05, #p < 0.001.

Abbreviations: % = ventilation/maximal voluntary ventilation ratio, COVID-19 = Coronavirus Disease 2019, km·h−1 = kilometers per hour.