Effects of Pilates Matwork Core Exercises on Functioning in Middle-Aged Adult Women with Chronic Nonspecific Low Back Pain Through Flexion Relaxation Phenomenon Analysis: A Pilot RCT. - Marotta, Nicola; de Sire, Alessandro; Pisani, Federica; Mercurio, Michele; Lopresti, Ennio; Scozzafava, Lorenzo; Parente, Andrea; Gasparini, Giorgio; Longo, Umile Giuseppe; Ammendolia, Antonio (Journal of Functional Morphology & Kinesiology, 2025)