This job is only for academic writers
I'm looking for whatever you can find about muscular conctracture (different from physiological contraction) in scientific : articles, review, referens.
In particular its definition and if you can find a correlation with acoustic waves (not ultrasound).
Of course you can use pubmed (and if you can find the integral review is the best)
It's required one article and one reference for sample
ONLY scientific articles (it means with reference)