Abstract

PARODI FEYE, Andrés Santiago. Critical review of Henneman's Law. Educ. fís. cienc. [online]. 2017, vol.19, n.2, pp.00-00. ISSN 2314-2561.

Henneman's Law (also known as "size principle") states that, considering that motor neuron's size determines its excitation threshold, during the application of a muscular force the smaller motor units are the first to be recruited, and if the effort is stronger, the other motor units are going to be recruited in a stereotyped way, according to their progressive size. However, during daily living or sport activities, this principle has a number of exemptions. The purpose of this review is to describe, according to the scientific evidence, the conditions under which this principle does not apply or is significantly affected.

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