Table 20.2-1. Bruce protocol for treadmill exercise stress testing

Stage

Belt speed (km/h)

Grade (%)

Time (min)

Stage (MET)

1

2.7

10

3

5

2

4.0

12

3

7

3

5.5

14

3

10

4

6.8

16

3

13

5

8.0

18

3

15

1 MET (metabolic equivalent of task) = resting oxygen consumption 3.5 mL/kg/min.