Changes in heart rate comparing different types of face mask worn during exercise
| Comparison | Average heart rate (bpm), with mask | Average heart rate (bpm), no mask | Estimated average difference (bpm, 95% CI) | Non-inferior @ +7 bpm |
| During exercise (N=69) | ||||
| Cloth—none | 157.5 | 157.3 | 0.10 (−2.90 to 3.10) | True |
| Surgical—none | 157.8 | 157.3 | 0.78 (−2.33 to 3.89) | True |
| FFP3—none | 159.9 | 157.3 | 2.84 (−0.24 to 5.91) | True |
| End of exercise (N=69) | ||||
| Cloth—none | 156.9 | 158.2 | −1.20 (−4.56 to 2.15) | True |
| Surgical—none | 158.7 | 158.2 | 0.36 (−3.01 to 3.73) | True |
| FFP3—none | 158.9 | 158.2 | 0.52 (−2.85 to 3.89) | True |
| 1 min after the end of exercise (N=67) | ||||
| Cloth—none | 124.8 | 124.2 | 0.40 (−2.15 to 2.95) | True |
| Surgical—none | 124.6 | 124.2 | 0.49 (−2.03 to 3.02) | True |
| FFP3—none | 125.3 | 124.2 | 1.45 (−1.11 to 4.01) | True |
FFP, filtering face piece.