Table of the values of chronaxy of the different body parts
Impulse parameters
Recent researches have explained that the muscle contracts in various ways according to the type of
stimulation it has received and according to the parameters that characterize it: intensity, frequency,
amplitude of the impulse, duration and recovery time.
The parameters that characterizes an electrical impulse are:
- frequency
- amplitude
- intensity
The frequency suggests how many impulse cycles occur in a second. It is expressed in Hertz. This
value affects the fibers that will be stimulated: the higher the frequency is, the more the stimulation
aims to fast fibers. At low frequencies, slow fibers are stimulated.
Image 2. In the first graphic the frequency is 10 Hz, in the second one it is 4 Hz.
EXAMPLE:
frequency fiber type (work)
10/50 Hz Slow fibers – Endurance
50/70 Hz Intermediate fibers
70/100 Hz Fast fibers - Strength
100/120 Hz Fast fibers
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