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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.