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. Author manuscript; available in PMC: 2010 Oct 1.

Published in final edited form as: Am Heart J. 2009 Oct;158(4 Suppl):S24–S30. doi: 10.1016/j.ahj.2009.07.017

Table 3.

Exercise endpoints by functional class and age.

NYHA II
	Age < 50	50−70	>70
Peak VO₂ (ml/kg/min)	17.7 ± 5.0 (265)	16.1 ± 4.4^* (633)	14.1 ± 3.8^* (201)
Ve/VCO₂ slope	30.0 ± 6.3 (263)	33.0 ± 7.6^* (630)	36.1 ± 8.2^* (198)
Peak RER	1.1 ± 0.1 (263)	1.1 ± 0.1 (630)	1.1 ± 0.1 (198)
Borg RPE	17.0 ± 2.4 (270)	16.8 ± 2.3 (642)	16.4 ± 2.2 (204)
Exercise time (min)	12.5 ± 4.4 (268)	10.9 ± 3.6^* (638)	9.3 ± 3.4^* (204)

NYHA III/IV
	Age < 50	50−70	>70
Peak VO₂ (ml/kg/min)	14.6 ± 5.2 (119)	13.0 ± 4.1^* (352)	11.7 ± 3.2^* (142)
Ve/VCO₂ slope	32.4 ± 9.0 (118)	36.4 ± 10.1^* (346)	41.4 ± 10.4^* (147)
Peak RER	1.1 ± 0.1 (118)	1.1 ± 0.1 (348)	1.1 ± 0.1 (146)
Borg RPE	17.1 ± 2.3 (121)	16.8 ± 2.3 (360)	16.1 ± 2.3 (150)
Exercise time (min)	9.5 ± 3.7 (120)	8.1 ± 3.3^* (360)	6.6 ± 2.7^* (152)

Values expressed as mean ± standard deviation (n). Abbreviations as in Table 2.

^*

- p value < 0.01 for within NYHA functional class comparisons.