PeerJ Author 100 Points Contributions by role Author 100 Contributions by subject area Geriatrics Kinesiology Orthopedics Rheumatology Ramon Machado PeerJ Author Summary Geriatrics Kinesiology Orthopedics Rheumatology PeerJ Contributions Articles 1 August 7, 2019 Muscle quality index and isometric strength in older adults with hip osteoarthritis Daniel Jerez-Mayorga, Luis Javier Chirosa Ríos, Alvaro Reyes, Pedro Delgado-Floody, Ramon Machado Payer, Isabel María Guisado Requena https://doi.org/10.7717/peerj.7471 PubMed 31410316