# Bruce treadmill test

The Bruce treadmill test is a maximal running test performed on a treadmill. It is one of the most commonly used tests in USA.

**Instructions:**

1. You need a treadmill that has reliable incline and speed possibilities.

2. Follow the protocol described below. (printer friendly pdf-sheet click here)

3. Note the time at the point of exhaustion.

Every three minutes speed and grade is changed as follows:

Time (min) |
3 | 6 | 9 | 12 | 15 | 18 | 21 |

Speed (mph) |
1.7 | 2.5 | 3.4 | 4.2 | 5.0 | 5.5 | 6.0 |

Grade (%) |
10 | 12 | 14 | 16 | 18 | 20 | 22 |

Should be read like this: the test begins with speed 1.7 mph and incline at 10%. After 3 minutes speed is increased to 2.5 mph and incline to 12%.

VO

_{2}maxml/kg/min

21.6

Gender

Age

Time

yrs

**Reference:**

ACSM's Guidelines for exercise testing and prescription. Seventh edition. pp 99-100

## Comments

12Treadmills perth

MORE EFFORT REQUIRED FROM PERSON OF 68 INCH HEIGHT THAN PERSON OF 74 INCH HEIGHT. HOW DO MEDICS ACCOUNT FOR THIS?

for example a 45 degree ange with the horizon describes a right angle. also a 45 degree angle with horizon.

rise over run is 1/1 equals a 100 persent grade at a angle of 45 degrees.

as is all falls out, the grade in % is about twice the angle in degrees with the horizon.

so if you complete stage 7 bruce protocol at 6 mph and 22% grade, you are exercising at about 11 degrees with the horizon.

I believe this correlates with incline 11/15 with most treadmills.

see grade and degrees on wikepedia.

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