. 2021 Nov 20;42(1):43–52. doi: 10.1111/cpf.12734

Table 2.

Peak cardiorespiratory parameters recorded during graded exercise testing (GXT) and exercise performed above the ventilatory threshold (VT) to volitional exhaustion with and without a surgical mask

	GXT	WR_VT + 25% No mask	WR_VT + 25% Mask
VO_2peak (mL kg⁻¹ min⁻¹)	52.2 ± 7.0	51.7 ± 7.5	45.2 ± 6.3 ^a
Ve_peak (L min⁻¹)	119.7 ± 30.1	119.2 ± 32.3	85.9 ± 22.5 ^a
Heart rate_peak (bpm)	189.6 ± 9.0	186.3 ± 10.9	186.2 ± 10.3
O₂ pulse_peak (mL/beat)	18.8 ± 4.2	18.8 ± 4.6	16.3 ± 3.5 ^a

Values are mean ± SD.

Abbreviations: O₂ pulse_peak, peak oxygen pulse; Ve_peak, peak minute ventilation; VO_2peak, peak oxygen uptake.

^{^a}

Significantly different from the GXT condition (p < 0.05).