Table 3.

Ratings of perceived exertion on the Borg Scale (6 = very light and 17 = very hard; mean ± SE)

Hands-Only CPR
	Younger	Older	All
5 minute	13.4 ± 0.2	13.4 ± 0.2	13.4 ± 0.2
End	15.5 ± 0.2	15.6 ± 0.2	15.5 ± 0.2
Across time	14.4 ± 0.3	14.5 ± 0.3	14.5 ± 0.2
30:2 CPR
5 minute	12.3 ± 0.2	12.0 ± 0.2	12.2 ± 0.2
End	14.4 ± 0.2	16.7 ± 0.2	14.5 ± 0.2
Across time	13.4 ± 0.3	13.3 ± 0.3	13.3 ± 0.2
Hands-Only CPR and 30:2 CPR
5 minute	12.8 ± 0.2	12.7 ± 0.2	12.8 ± 0.2
End	14.9 ± 0.2	15.1 ± 0.2	15.0 ± 0.2
Across time and type of CPR	13.9 ± 0.3	13.9 ± 0.3	13.8 ± 1.6