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Reference:
Principals of Anatomy and Physiology : 6th Edition

01/10/1999 - Page created and on www.brianmac.demon.co.uk

01/01/07 - Page moved to new site www.brianmac.co.uk
01/01/07 - Dreamweaver used to manage the website allowing design notes - no history of updates to date

Muscle Fibre 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 objective of the muscle fibre test is to determine the fibre composition of the muscles used for a particular exercise. Two test protocols are described: The Dr F. Hatfield muscle fibre test and the Charles Poliquin muscle fibre test (Hale 2006)[1].

Required Resources

To undertake this test you will require:

  • Weight training facilities
  • An assistant/spotter
  • Selection of exercises

How to conduct the Dr F. Hatfield muscle fibre test

Analysis

  • Less than 7 repetitions - fast twitch (FT) dominant
  • 7 or 8 repetitions - mixed fibre type
  • more than 8 repetitions - slow twitch (ST) dominant

If you are FT dominant, then you should use heavier loads and lower repetitions predominantly in your training. ST dominant individuals, on the other hand, will respond better to lighter loads and higher repetitions

How to conduct the Charles Poliquin muscle fibre test

Analysis

  • Less than 5 repetitions - fast twitch (FT) dominant
  • 5 repetitions - mixed fibre type
  • more than 5 repetitions - slow twitch (ST) dominant

If you are FT dominant, then you should use heavier loads and lower repetitions predominantly in your training. ST dominant individuals, on the other hand, will respond better to lighter loads and higher repetitions

Target Group

This test is suitable for all athletes but not for individuals 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 determine the fibre composition of the muscles used for a particular exercise.

Advantages

  • Minimal equipment required
  • Simple to set up and conduct

Disadvantages

  • Specialist equipment required
  • Assistant required to administer the test

Referenced Material

  1. HALE J. (2006) Adapting your workout to suit your muscle fibre type. Brian Mackenzie's Successful Coaching, 37, p. 6-7

Page Reference

The reference for this page is:

  • MACKENZIE, B. (2006) Muscle Fibre Test [WWW] Available from: http://www.brianmac.co.uk/musclefibre.htm [Accessed

Associated Pages

The following Sports Coach pages should be read in conjunction with this page: