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Table 1 Summary of E- and A- velocities and E/A ratios at rest and following exercise.

From: Exercise cardiac MR assessment of diastolic function

Subjects

Condition

E (cm/s)

A (cm/s)

E/A

All (N=12)

Rest

82.0±18.7

(61.6-134.4)

53.0±17.3

(34.2-95.6)

1.63±0.43

(1.00-2.35)

 

Exercise

89.1±6.7

(76.5-98.3)

P=0.25

56.5±16.1

(32.4-94.5)

P=0.63

1.69±0.45

(0.81-2.50)

P=0.73

<20bpm increase in HR (N=5)

Rest

92.7±24.7

(68.4-134.4)

55.9±17.7

(42.1-83.6)

1.74±0.50

(1.00-2.12)

 

Exercise

88.2±6.1

(79.8-95.3)

P=0.74

53.3±13.7

(32.4-66.1)

P=0.75

1.74±0.43

(1.41-2.46)

P=0.99

>20bpm increase in HR (N=7)

Rest

73.6±11.8

(61.6-95.6)

51.1±20.7

(34.2-95.6)

1.56±0.45

(1.00-2.35)

 

Exericse

89.8±7.4

(76.5-98.3)

P=0.01

58.8±18.4

(35.4-94.5)

P=0.50

1.66±0.50

(0.81-2.50)

P=0.71

  1. Values are reported as mean ± standard deviation (range). There were trends of higher E- and A- velocities and E/A ratios, but the increase in E-velocity was only significant in subjects in whom heart rate increased >20bpm relative to rest.