Effects of a taped filter mask on peak power, perceived breathlessness, heart rate, blood lactate and oxygen saturation during a graded exercise test in young healthy adults: a randomized controlled trial

Table 6 Post-exercise blood lactate concentrations

	No mask (mmol/L)	Surgical mask (mmol/L)	Taped filter mask (mmol/L)	ANOVA	No mask versus surgical mask	No mask versus taped filter mask	Surgical mask versus taped filter mask
Post 1 min	9.0 ± 2.0	7.5 ± 1.7	6.4 ± 1.9	0.012	0.111	0.011	0.188
Post 3 min	8.0 ± 2.2	7.2 ± 1.1	6.0 ± 2.4	0.040	0.256	0.039	0.239
Post 5 min	7.6 ± 2.2	6.6 ± 0.9	5.3 ± 2.8	0.019	0.202	0.017	0.202
Δ Post1–End	1.0 ± 1.0	0.6 ± 1.4	0.9 ± 1.2	0.797	1.000	1.000	1.000
Δ Post3–Post1	− 0.9 ± 0.5	− 0.2 ± 1.0	− 0.5 ± 1.3	0.448	0.667	0.803	0.803
Δ Post5–Post3	− 1.5 ± 1.9	− 0.7 ± 0.9	− 0.7 ± 0.6	0.377	0.670	0.670	0.965

Results of the blood lactate concentration are reported in mean ± standard deviation. mmol/L = millimoles per liter. ANOVA = Analysis of variance. Δ Post1-End = Change between post 1 min measurement and measurement at test termination. Δ Post3-Post1 = Change between post 3 min measurement and post 1 min measurement. Δ Post5-Post3 = Change between post 5 min measurement and post 3 min measurement
p Values are shown for statistical analysis
Significant results are indicated in bold

ISSN: 2052-1847