Base contraction

What I mean when I use the term is a contraction of the external anal sphincter muscle that is sustained over time. As you continue to use the aneros your ability the sustain a contraction of this muscle will improve. This muscle along with your PC muscle of your pelvic floor are the muscles you have voluntary control over and can develop.

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The idea of a base or basal contraction that I had in mind in most of my writings involves the above definition and something more as well.

A basal contraction forms a starting point as a measure of intensity, a foundation from which all other contractions begin and end. Generally it will be of a level that is just above that of relaxation. Stronger contractions will begin from this place and return to it.

BF Mayfield