Coastal Fishermen as Lifesavers While Sailing at High Speed: A Crossover Study
Table 2
Quality and effective CPR. Perceived exertion and quality variables.
At port
At 10 knots
At 20 knots
At port versus 10 knots
At port versus 20 knots
10 knots versus 20 knots
Mean (DE)
95% IC
Mean (DE)
95% IC
Mean (DE)
95% IC
value
ES
Rating
value
ES
Rating
value
ES
Rating
Quality maneuvers
QCC
71(16)
63–79
49 (20)
39–58
46 (18)
37–54
0.001
1.42
Large
<0.001
1.60
Large
0.47
0.46
Small
QV
14 (14)
8–21
12 (17)
4–20
6 (11)
1–12
0.59
0.15
Small
0.13
0.47
Medium
0.17
0.33
Medium
QCPR
43 (10)
38–47
30 (15)
23–37
26 (12)
20–32
0.01
1.05
Large
0.001
1.45
Large
0.27
0.56
Medium
Effective maneuvers
EV
83 (23)
72–94
70 (36)
53–87
68 (38)
50–85
0.47
0.23
Small
0.07
0.43
Medium
0.59
0.22
Small
ECPR
77 (14)
71–83
59 (18)
51–67
57 (21)
47–66
0.01
1.46
Large
0.01
1.44
Large
1.00
0.35
Small
Perceived variables
RPA
59 (12)
53–64
58 (10)
54–63
53 (10)
48–57
1.00
0.10
Small
0.02
0.50
Large
0.06
0.51
Large
RPE
3 (1)
3-4
4 (1)
3–5
5 (2)
4-5
0.01
0.57
Large
<0.001
0.72
Large
0.01
0.55
Large
Bonferroni test. Friedman test. QCC: chest compression quality (percentage of TCC with 50 and 60 mm of depth, with full chest recovery, keeping a rate between 100 and 120 compressions per minute). QV: quality of ventilations in percentage with a tidal volume between 500 and 600 ml. QCPR: quality of CPR, calculated with the formula [(QCC + QV)/2]. EV: effective ventilation with visible air intake (from 100 ml onwards) in percentage. ECPR: effectiveness of CRP in percentage, calculated with the formula [(QCC + EV)/2]. RPA: rating of perceived ability (in percentage). RPE: rating of perceived exertion (modified 10-point Borg’s scale).
