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Table 4 Between-group differences in pulmonary function at baseline and post-program

From: Effect of high-intensity interval training on cardiorespiratory fitness, physical activity and body composition in people with schizophrenia: a randomized controlled trial

   Intervention group Comparison group  
N Mean (SD) N Mean (SD) Mean diff 95% CI P
FVC (L) Baseline 43 4.4 (1.3) 39 4.2 (1.1) 0.2 −0.3, 0.7 0.4
Post-program 32 4.3 (1.3) 37 4.2 (1.1) 0.0 −0.5, 0.6 0.7
FVC % pred (%) Baseline   100 (20)   96 (15) 3.3 −4.9, 11.6 0.4
Post-program   99 (17)   98 (14) −1.3 −8.5, 5.9 0.7
FEV1 (L) Baseline 43 3.4 (1.0) 39 3.3 (1.0) 0.1 −0.3, 0.6 0.5
Post-program 32 3.3 (1.0) 37 3.1 (0.9) 0.1 −0.3, 0.6 0.4
FEV1 pred (%) Baseline   93 (16)   90 (19) 2.7 −56, 11.1 0.5
Post-program   93 (18)   89 (17) 1.8 −5.8, 9.6 0.6
FEV1/FVC (%) Baseline 42 77 (11) 37 77 (10) −0.1 −4.9, 4.6 0.9
Post-program 32 78 (8) 37 75 (11) 2.5 −2.2, 7.3 0.2
FEV1/FVC pred (%) Baseline   95 (13)   95 (12) −0.3 −6.2, 5.6 0.9
Post-program   96 (9)   93 (14) 3.7 − 2.2, 9.7 0.2
MEF50 (L· s−1) Baseline 42 3.9 (1.5) 37 3.9 (1.4) 0.0 −0.5, 0.7 0.8
Post-program 32 3.8 (1.6) 37 3.4 (1.3) 0.4 −0.3, 1.1 0.2
MEF50 pred (%) Baseline   78 (25)   78 (25) 0.2 −11.6, 12.1 0.9
Post-program   78 (27)   70 (25) 8.0 −5.0, 21 0.2
MVV (L) Baseline 40 120 (37) 37 114 (36) 5.7 −11, 22 0.5
Post-program 32 118 (37) 35 110 (31) 7.8 −9, 24 0.3
BR (%) Baseline 37 26 (18) 32 22 (26) 4.2 −7, 15 0.4
Post-program 25 21 (20) 27 20 (23) 0.8 −11, 13 0.8
  1. Presented values are the mean ± SD. SD, standard deviation. CI, confidence interval. Pred, predicted. FVC, forced vital capacity. FEV1, forced expiratory volume in 1 s. MEF 50%, maximal expiratory flow 50%. MVV, maximal voluntary ventilation. BR, breathing reserve