PeerJ Author & Reviewer 115 Points Contributions by role Author 100 Reviewer 15 Contributions by subject area Anatomy and Physiology Kinesiology Orthopedics Anesthesiology and Pain Management Gynecology and Obstetrics Women's Health Gemma Biviá-Roig PeerJ Author & Reviewer Summary Anesthesiology & Pain Management Gynecology & Obstetrics Kinesiology Orthopedics Women's Health 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