1. Physical Medicine and Rehabilitation, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy
2. Physical Medicine and Rehabilitation Unit, Sapienza University of Rome, Sant'Andrea Hospital, Rome, Italy
3. Rheumatology Unit, Department of Internal Medicine, Sapienza University of Rome, Policlinico Umberto I, Italy
4. Rheumatology Unit, Sapienza University of Rome, Sant'Andrea Hospita, Rome, Italy
5. Research Centre for Sport, Exercise and Health, Vila Real, Portugal
6. University of Rome "Foro Italico", Italy