**Sprint Bound Index Test.**The objective of this test is to monitor the development of the athlete’s elastic leg strength.

**Required resources**

To undertake this test you will require:

- 400m track – 30m marked section on the straight
- Cones
- Stop watch
- Two assistants.

**How to conduct the test**

- Begin with one foot on the start line and place the other foot 2 to 3 feet behind you
- Place both of your helpers at the finish line – one to count the number of foot contacts and the other to time your sprint-bound effort over the 30m distance
- On your own command, sprint-bound down the track for the entire 30m distance
- The timer should start the watch when the foot on the start line breaks contact with the ground and then stop the watch when your torso crosses the finish line
- The time is recorded by rounding up to the nearest tenth of a second
- Your second helper is responsible for counting the number of bounds it takes you to reach the finish line
- The number of bounds should be rounded down to the nearest half-bound
- Perform three trials, with 3 to 5 minutes between each trial
- Record the results of all three trials.

**Analysis**

Calculate the ‘sprint-bounding index’ for each trial using the following formula:

- Sprint-bound index (SBI) = (no. of bounds) x (time for 30m)

Example:

You have taken 15.5 bounds to cover the 30m, in a time of 4.5 seconds.

- SBI = 15.5×4.5 = 69.75.

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. A reduction in the Sprint-bound index indicates an improvement.

**Target group**

This test is suitable for active 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 no published tables to relate results to potential performance in competition.

**Reference**

Mackenzie, Brian. 2005.

*101 Performance Evalution Test.*Electric World Plc. London.(Visited 19 times, 1 visits today)

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