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Home / Exercising / Fitness tests / Body & exercise tests / Muscle / Muscle fibre
Muscle fibre test
Introduction
Coaches perform the Muscle Fibre Test to assess their athletes' muscle composition.
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What is the point?
Composition of muscle fibre is important for athletes - if you are primarily a strength or speed athlete, you want fast twitch fibres. For endurance athletes, a preponderance of slow twitch fibres is optimal.
The Muscle Fibre Test will help you to analyse which type you primarily have for any given muscle group.
What do you need?
- Weight training facilities
- Assistant/spotter
- Knowledge of a variety of exercises
How do you do the test?
Taking this assessment involves the following protocol:
- Determine your one repetiti on maximum (1RM) on a given exercise
- Rest for 15 minutes
- Using 80% of your 1RM, perform as many repetitions as possible
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What results you'll get :
The results are analysed as follows:
Less than 7 repetitions at 80% - mostly fast twitch (FT) dominant
7 or 8 repetitions - mixed fibre type
More than 8 repetitions - slow twitch (ST) dominant
What is being measured again?
The objective of the muscle fibre test is to determine the fibre composition of the muscles used for a particular exercise.
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