1. Laboratory of Adapted Motor Activity (LAMA), Department of Public Health, Experimental Medicine and Forensic Science, University of Pavia, 27100 Pavia, Italy
2. Pediatric Department, “V. Buzzi” Children’s Hospital, 20154 Milan, Italy
3. Department of Industrial Engineering, University of Rome Tor Vergata, 00133 Rome, Italy
4. Associazione Vivi Down Onlus, 20158 Milan, Italy
5. Department of Biomedical and Clinical Science “L. Sacco”, University of Milan, 20157 Milan, Italy
6. Pediatric and Adolescent Unit, Department of Internal Medicine, University of Pavia, 27100 Pavia, Italy