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Sprint Bound Index Test

Testing and measurement are the means of collecting information upon which subsequent performance evaluations and decisions are made but in the analysis we need to bear in mind the factors that may influence the results.

Objective

The Sprint Bound Index Test (Young 1992)[1] can be used to monitor the development of the athlete's elastic leg strength.

Required Resources

To undertake this test you will require:

  • Flat non-slip surface
  • Cones
  • Stopwatch
  • Two assistants

How to conduct the test

This test requires the athlete to bound over 30 metres as fast as possible.

  • The athlete warms up for 10 minutes
  • The 1st assistant, using cones, marks out a 30m section
  • The athlete begins with one foot on the start line and the other foot two to three feet behind
  • The two assistants stand by the finish line – 2nd assistant counts the number of foot contacts to complete the 30m section and the 1st assistant the time to complete the 30 metre distance
  • The 1st  assistant gives the command “GO” and starts the stopwatch
  • The athlete bounds down the 30m section as fast as possible
  • The 1st assistant stops the stopwatch when the athlete's torso crosses the finish line
  • The 2nd assistant counts the number of bounds to the nearest ½ bound
  • The 1st assistant records the time and the number of bounds
  • The athlete repeats the test after a three minute recovery

Assessment

I have been unable to locate any normative data for this test.

Enter the time, number of bounds and then select the "calculate" button for an analysis of the results.

Time - seconds Number of bounds -     Sprint Bound Index =

The 'sprint-bounding index' is determined as follows:

  • Sprint-bound index (SBI) = (number of bounds) × (time for 30 metres)

A reduction in the SBI indicates an improvement

Analysis

Analysis of the test result is by comparing it with the athlete's previous results for this test. It is expected that, with appropriate training between each test, the analysis would indicate an improvement in the athlete's leg strength.

Target Group

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

Reliability

Test reliability refers to the degree to which a test is consistent and stable in measuring what it is intended to measure. Reliability will depend upon how strict the test is conducted and the individual's level of motivation to perform the test. The following link provides a variety of factors that may influence the results and therefore the test reliability.

Validity

Test validity refers to the degree to which the test actually measures what it claims to measure and the extent to which inferences, conclusions, and decisions made on the basis of test scores are appropriate and meaningful. This test provides a means to monitor the effect of training on the athlete's physical development.

Advantages

  • Minimal equipment required
  • Simple to set up and conduct
  • Can be conducted almost anywhere

Disadvantages

  • Specific facilities required
  • Assistant required to administer the test


References

  1. YOUNG, W. (1992) Sprint Bounding and the Sprint-Bound Index. NSCA Journal, 14 (4), p. 18-21

Related References

The following references provide additional information on this topic:

  • RIMMER, E. and SLEIVERT, G. (2000) Effects of a plyometrics intervention program on sprint performance. The Journal of Strength & Conditioning Research, 14 (3), p. 295-301
  • BENTON, D. and DUTHIE, G. (2014) Lateral Speed Bound Index for Field Sport Agility
  • SINGH, W. (2010) Temporal evaluation of sprint bounding in sprinters and jumpers. British Journal of Sports Medicine, 44 (Suppl 1), p.i24-i24

Page Reference

If you quote information from this page in your work then the reference for this page is:

  • MACKENZIE, B. (2001) Sprint Bound Index Test [WWW] Available from: https://www.brianmac.co.uk/sbi.htm [Accessed

Related Pages

The following Sports Coach pages provide additional information on this topic: