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. 2021 Nov 10;16(11):e0257549. doi: 10.1371/journal.pone.0257549

Fig 4. Airborne particulate generation during anaerobic exercise using the laminar airflow ventilation system (LFVS).

Fig 4

(A) Representative graphs of the concentration of airborne particulates (<0.3 μm) (red dots) in activating the LFVS during constant exercise 4 minutes after reaching 85% of the expected maximum heart rate. (B) Concentration of airborne particulates (>0.3 μm) before and after the activation of the LFVS (n = 10). ##p<0.001 compared with the off LFVS, 85%, constant-load exercise at 85% of the expected maximum heart rate, LT, lactate threshold.