Comparison between the rescuer fatigue levels when using the superimposed-thumb and alongside-thumb techniques
| Mean±SD | |||||||||
| Time (min) | ∆ Heart rate (bpm) | p Value | ∆ Respiratory rate (bpm) | p Value | ∆ ETCO2 (mm Hg) | p Value | Likert scale | p Value | |
| 1 | OP | 15.47±10.01 | 0.76 | 3.63±3.63 | 0.15 | 1.97±2.58 | 0.30 | 1.75±0.57 | 0.23 |
| AP | 17.81±10.63 | 3.41±2.50 | 3.00±5.04 | 1.91±0.64 | |||||
| 2 | OP | 20.78±10.36 | 0.27 | 4.22±3.72 | 0.06 | 3.28±3.06 | 0.92 | 2.19±0.90 | 0.03 |
| AP | 22.66±10.05 | 6.19±4.77 | 3.41±5.48 | 2.59±0.80 | |||||
| 3 | OP | 23.19±11.10 | 0.21 | 4.72±4.77 | 0.95 | 3.50±3.32 | 0.30 | 2.72±0.68 | 0.01 |
| AP | 25.59±11.18 | 4.66±4.05 | 2.59±2.18 | 3.13±0.91 | |||||
| 4 | OP | 25.50±12.16 | 0.18 | 4.66±3.54 | 0.97 | 3.75±3.32 | 0.15 | 3.06±0.88 | 0.13 |
| AP | 28.19±13.37 | 4.69±3.97 | 2.56±2.51 | 3.38±1.01 | |||||
| 5 | OP | 27.22±10.66 | 0.19 | 4.50±3.42 | 0.62 | 3.41±3.34 | 0.63 | 3.34±0.94 | <0.01 |
| AP | 30.19±14.75 | 5.03±3.84 | 2.91±2.05 | 3.84±0.81 | |||||
AP, adjacent thumb position; ETCO2, end-tidal CO2; OP, overlapping thumb position.