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. 2021 Jul 24;14:3569–3585. doi: 10.2147/JIR.S318758

Table 3.

Ventilatory Parameters

Placebo (n = 15) PBMT-sMF (n = 15) Placebo vs PBMT-sMF
Baseline Day 10 Endpoint Baseline Day 10 Endpoint Between Groups Comparisons Mean Difference
[95% CI]
Effect Size
Cohen d
Thickness fraction diaphragm (%) 25.28 (± 12.85) 22.90 (± 7.58) 23.76 (± 13.15) 29.55 (± 13.56) 37.09 (± 17.02) 44.22 (± 12.59)** Baseline: p=0.99
Day 10: p=0.0117
Endpoint: p=0.0001
Baseline: 4.27
[−7.41 to 15.95]
Day 10: 14.19
[2.50 to 25.87]
Endpoint: 20.46
[8.77 to 32.14]
Day 10: 1.1 (large)
Endpoint: 1.6 (large)
PEEP (cmH2O) 9.13 (± 2.64) 8.93 (± 2.46) 8.20 (± 4.09) 9.00 (± 1.96) 7.53 (± 2.82) 6.60 (± 2.82) Baseline: p=0.99
Day 10: p=0.5540
Endpoint: p=0.3931
Baseline: −0.13
[−2.69 to 2.43]
Day 10: −1.40
[−3.96 to 1.16]
Endpoint: −1.60
[- 4.16 to 0.96]
Day 10: 0.5 (moderate)
Endpoint: 0.5 (moderate)
PO2 (mmHg) 91.46 (± 20.78) 99.74 (± 29.93) 92.74 (± 28.00) 108.22 (± 29.68) 106.46 (± 33.98) 109.29 (± 26.16) Baseline: p=0.99
Day 10: p=0.99
Endpoint: p=0.34
Baseline: 16.76
[−8.64 to 42.16]
Day 10: 6.72
[−18.68 to 32.12]
Endpoint: 16.55
[−8.85 to 41.95]
Day 10: 0.2 (small)
Endpoint: 0.6 (moderate)
FiO2 (%) 69.66 (± 21.91) 63.20 (± 26.72) 75.46 (± 31.59) 62.33 (± 21.03) 51.26 (± 26.07) 51.53 (± 29.68) Baseline: p= 0.33
Day 10: p=0.6590
Endpoint: p=0.0456
Baseline: −7.33
[−30.92 to 16.26]
Day 10: −11.94
[- 35.53 to 11.65]
Endpoint:- 23.93
[−47.52 to −0.34]
Day 10: 0.5 (moderate)
Endpoint: 0.8 (large)
PO2/FiO2 (mmHg) 146.71 (± 61.85) 183.32 (± 81.85) 158.26 (± 102.37) 199.65 (± 109.82) 261.28 (± 156.21) 276.15 (± 163.07) Baseline: p=0.67
Day 10: p=0.2246
Endpoint: p=0.0233
Baseline: 52.94
[−53.63 to 158.50]
Day 10: 77.95
[−27.63 to 183.50]
Endpoint: 117.90
[12.31 to 223.50]
Day 10: 0.6 (moderate)
Endpoint: 0.9 (large)

Notes: **Intragroup difference (PBMT-sMF) compared to the baseline (p<0.01). Continuous variables are expressed as mean (SD).

Abbreviations: PBMT-sMF, photobiomodulation therapy combined with static magnetic field; PEEP, positive end-expiratory pressure levels; PO2, arterial partial pressure of oxygen; FiO2, fraction of inspired oxygen; PO2/FiO2, ratio of arterial partial pressure of oxygen and fraction of inspired oxygen.