PeerJ Author 100 Points Contributions by role Author 100 Contributions by subject area Anatomy and Physiology Kinesiology Orthopedics Juan Francisco Lisón PeerJ Author Summary Anatomy & Physiology Kinesiology Orthopedics PeerJ Contributions Articles 1 October 18, 2019 Determining the optimal maximal and submaximal voluntary contraction tests for normalizing the erector spinae muscles Gemma Biviá-Roig, Juan Francisco Lisón, Daniel Sánchez-Zuriaga https://doi.org/10.7717/peerj.7824 PubMed 31637121