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. Author manuscript; available in PMC: 2012 Sep 15.
Published in final edited form as: Int J Cardiol. 2010 Jun 30;151(3):278–283. doi: 10.1016/j.ijcard.2010.05.056

Table 2.

Cardiopulmonary Exercise Test Data According to Age and Event Status

Overall
Group
(n=1605)		 ≤45 years:
No event
(n=218)		 ≤45 years:
Event
(n=45)		 46-65
years: No
event
(n=700)		 46-65
years:
Event
(n=107)		 ≥65 years:
No event
(n=462)		 ≥65 years:
Event
(n=73)
Peak VO2,
ml● kg−1●min−1a 		16.7 ±6.6 19.2 ±7.7 14.0 ±4.7 17.4 ±6.6 12.3 ±4.3 16.5 ±5.8 12.4 ±3.8
Percent-Predicted
Peak VO2, %b 		70.8 ±36.9 59.5 ±25.5 43.3 ±17.6 71.3 ±35.2 46.0 ±20.5 84.6 ±41.6 66.4 ±37.5
VE/VCO2 slope c 34.5 ±9.5 32.2 ±9.2 39.9 ±10.1 33.0 ±8.2 42.1 ±11.7 34.2 ±8.4 42.3 ±11.0
Peak RER 1.09 ±0.14 1.09 ±0.13 1.08 ±0.10 1.09 ±0.15 1.09 ±0.15 1.09 ±0.14 1.10 ±0.16
a

≤45 years age group significantly different from other two groups (p<0.01); Significant difference within each age group according to event status (p<0.001))

b

All three age groups significantly different (p<0.001); Significant difference within each age group according to event status (p<0.001)

c

≤45 years age group significantly different from ≥65 age group (p<0.05); Significant difference within each age group according to event status (p<0.001)