|
|
Normals
|
CHF and Normal CO Response
|
CHF and Abnormal CO Response
|
p value
|
|
Rest
|
|
|
|
|
|
Standing
heart rate (beats·min-1)
|
75 (13)
|
74 (14)
|
77 (11)
|
.79
|
|
Systolic
blood pressure (mmHg)
|
125 (9)
|
118 (9)
|
118 (9)
|
.05
|
|
Ventilatory Threshold
|
|
|
|
|
|
Heart
rate (beats·min-1)
|
130 (22)
|
105 (23) †
|
97 (18) †
|
.001
|
|
Systolic
blood pressure (mmHg)
|
140 (7)
|
127 (11) †
|
126 (12) †
|
.008
|
|
Diastolic
blood pressure (mmHg)
|
84 (7)
|
82 (7)
|
73 (13)
|
.07
|
|
Oxygen
uptake (ml/min)
|
1487 (483)
|
1124 (419)
|
906 (460) †
|
.007
|
|
Oxygen
uptake (ml/kg/min)
|
19.8 (6.0)
|
11.4 (3.9) †
|
10.7 (4.2) †
|
<.001
|
|
Minute
ventilation (l/min)
|
38.2 (15.0)
|
32.3 (12.0)
|
25.7 (8.0) †
|
.05
|
|
CO2
production (ml/min)
|
1445 (580)
|
1027 (445) †
|
827 (428) †
|
.007
|
|
Perceived
exertion
|
--
|
5.3 (2.9)
|
3.2 (1.3)
|
.21
|
|
Maximal Exercise
|
|
|
|
|
|
Heart
rate (beats·min-1)
|
139 (24)
|
116 (27) †
|
112 (18) †
|
.008
|
|
Systolic
blood pressure (mmHg)
|
143 (12)
|
134 (12)
|
132 (19)
|
.09
|
|
Oxygen
uptake (ml/min)
|
1857 (464)
|
1494 (518)
|
1169 (628) *†
|
.009
|
|
Oxygen
uptake (ml/kg/min)
|
24.8 (6.2)
|
16.8 (5.5) †
|
14.1 (5.8) †
|
<.001
|
|
Minute
ventilation (l/min)
|
63.7 (16.0)
|
58.7 (20.0)†
|
43.7 (16.0)
|
.02
|
|
CO2
production
|
2173 (577)
|
1678 (674)
|
1298 (694) †
|
.006
|
|
Respiratory
exchange ratio
|
1.15 (.09)
|
1.12 (.10)
|
1.12 (.09)
|
.61
|
|
VE/VCO2
Slope
|
.28 (.03)
|
.35 (.08) †
|
.37 (.09) †*
|
.007
|
|
OUES
|
2.1 (.59)
|
1.61 (.55)
|
1.39 (.68) †
|
.01
|
|
Perceived
exertion
|
--
|
7.9 (1.8)
|
7.9 (2.5)
|
.94
|