**Balke Treadmill Test Instrument**

The objective of Balke Treadmill Test is to monitor the development of the athlete’s general endurance (VO2max).

**Required Resources for Balke Treadmill Test**

To undertake this test you will require:

- Treadmill where speed and grade of slope can be adjusted
- Stop watch
- Assistant.

**How to conduct the Balke Treadmill Test**

The athlete walks on a treadmill to exhaustion. At timed stages during the test the grade of slope (%) of the treadmill is increased as follows:

1. Active and sedentary men

- Treadmill speed set at 3.3 mph (5.3km/hr)
- Start – Grade is 0%
- After 1 minute – Grade set at 2%
- After 2 minutes and each minute thereafter the grade is increased by 1%

2. Active and sedentary women

- Treadmill speed set at 3.0 mph (4.5 km/hr)
- Start – Grade is 0%
- After 3 minutes and every 3 minutes thereafter the grade is increased by 2.5%

3. The assistant starts the stop watch at the start of the test and stops it when the athlete is unable to continue – this ideally should be between 9 and 15 minutes.

**Analysis**

Analysis of the result is by comparing it with the results of previous tests. It is expected that, with appropriate training between each test, the analysis would indicate an improvement.

**Active and sedentary men – Pollock et al. 1976**

From the total time an estimate of the athlete’s VO2max can be calculated as follows:

VO2max = 1 444 x T + 14.99

“T” is the total time of the test expressed in minutes and fractions of a minute e.g 13 minutes. 15 seconds = 13.25 minutes.

VO2max = 1 444 x T + 14.99

“T” is the total time of the test expressed in minutes and fractions of a minute e.g 13 minutes. 15 seconds = 13.25 minutes.

**Active and sedentary women – Pollock et al. 1982**

From the total time an estimate of the athlete’s V02max can be calculated as follows:

VO2max = 1.38 x T + 5.22

“T” is the total time of the test expressed in minutes and fractions of a minute.

VO2max = 1.38 x T + 5.22

“T” is the total time of the test expressed in minutes and fractions of a minute.

**Target group**

This test is suitable for active and sedentary individuals but not for those where the test would be contraindicated.

**Reliability**

Reliability would depend upon how strict the test is conducted and the individual’s level of motivation to perform the test.

**Validity**

There are published VO2max tables and the correlation to actual VO2max is high.

**Reference**

Mackenzie, Brian. 2005. *101 Perforamnce Evalution Test. *Electric World Plc. London.

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