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Table 1 Subject Characteristics, Rest and Exercise Hemodynamics and Oxygen Uptake

From: Cardiac mechanisms for low aerobic power in anthracycline treated, older, long-term breast cancer survivors

 

BC (n = 9)

Control (n = 8)

P Value

Age (years)

67 (3)

67 (5)

0.96

BSA (m2)

1.77 (0.14)

1.72 (0.07)

0.38

BMI (kg/m2)

27.6 (4.3)

24.3 (2.2)

0.08

Self-Reported Physical Activity (minutes/week)

125 (100)

126 (135)

0.96

Time post-anthracycline chemotherapy completion (years)

9.8 (5.2)

Rest

 VO2 (l/min)

0.19 (0.03)

0.20 (0.04)

0.34

 VO2 (ml/kg/min)

2.7 (0.5)

3.0 (0.5)

0.16

 Qc (l/min)

3.34 (0.40)

4.13 (0.52)

0.003

 HR (bpm)

71 (9)

71 (8)

0.99

 SVAR (ml)

48 (7)

58 (8)

0.01

 MAP (mmHg)

101 (10)

93 (13)

0.2

 EDVEcho (ml)

64 (9)

79 (11)

0.04

 ESVEcho (ml)

30 (5)

32 (7)

0.70

 EF (%)

52 (7)

60 (5)

0.06

 E/e’

8.7 (2.4)

8.2 (2.1)

0.69

 e’average

7.0 (1.7)

7.4 (2.1)

0.71

 E/A

0.89 (0.09)

0.96 (0.23)

0.47

Submaximal Exercise, 20 W

 VO2 (l/min)

0.55 (0.08)

0.57 (0.07)

0.60

 VO2 (ml/kg/min)

7.8 (1.4)

8.9 (1.2)

0.10

 Qc (l/min)

6.36 (0.97)

7.24 (0.81)

0.06

 HR (bpm)

94 (14)

92 (6)

0.71

 SVAR (ml)

68 (10)

79 (8)

0.03

 MAP (mmHg)

110 (13)

105 (14)

0.49

 EDVEcho (ml)

69 (9)

91 (23)

0.07

 ESVEcho (ml)

28 (5)

36 (10)

0.14

 EF (%)

60 (6)

61 (2)

9.72

 E/e’

8.0 (1.3)

8.2 (1.8)

0.76

 e’average

11.1 (1.7)

9.9 (1.7)

0.18

 E/A

1.00 (0.22)

0.96 (0.19)

0.73

Submaximal Exercise, 40 W

 VO2 (l/min)

0.73 (0.13)

0.77 (0.09)

0.50

 VO2 (ml/kg/min)

10.5 (2.5)

11.5 (1.6)

0.35

 Qc (l/min)

7.44 (0.81)

8.01 (0.72)

0.17

 HR (bpm)

112 (19)

103 (10)

0.25

 SVAR (ml)

68 (11)

78 (6)

0.04

 MAP (mmHg)

116 (15)

107 (11)

0.22

Peak Exercise

 Power output (Watts)

81 (12)

99 (13)

0.01

 VO2 (l/min)

1.11 (0.09)

1.32 (0.15)

0.003

 VO2 (ml/kg/min)

15.9 (2.0)

19.9 (3.1)

0.006

 RER

1.15 (0.07)

1.17 (0.08)

0.67

 Qc (l/min)

9.49 (1.05)

11.40 (1.03)

0.003

 a-vO2Diff (ml/dL)

11.8 (0.9)

11.8 (0.8)

0.87

 HR (bpm)

159 (16)

156 (7)

0.71

 SVAR (ml)

60 (9)

72 (9)

0.02

 MAP (mmHg)

125 (21)

120 (11)

0.63

Reserve

 Qc (l/min)

6.14 (0.81)

7.21 (0.75)

0.02

 HR (bpm)

88 (9)

85 (10)

0.62

 SVAR (ml)

13 (6)

13 (9)

0.94

  1. BSA body surface area, BMI body mass index, VO2 oxygen uptake, RER respiratory exchange ratio, Qc cardiac output, HR heart rate, SV stroke volume, AR acetylene rebreathe, MAP mean arterial pressure, Echo Echocardiography, EDV end diastolic volume, ESV end systolic volume, EF ejection fraction, E/e’ ratio of early diastolic mitral inflow to myocardial tissue velocity, E/A ratio of early diastolic to late mitral inflow, a-vO2 Diff arterial-venous oxygen content difference