“…While different molecules have been proposed as method to promote tendon's healing (Sirico et al, 2017) (Bruno Corrado, Mazzuoccolo, et al, 2019, few substances have been studied to promote muscle healing, like PRP (Hamid, Yusof, & Mohamed Ali, 2014). Knowing physiological mechanism behind muscle contraction could promote new rehabilitative approach and interventional procedures in musculoskeletal disorders, favouring more positive results for patients (Gustafsson, DeFreese, & Madigan, 2017), trainers, physiotherapists (Bruno Corrado, Ciardi, Fortunato, & Iammarrone, 2019) and doctors (Dewa, Loong, Bonato, Thanh, & Jacobs, 2014).…”