Agreement between Optoelectronic System and Wearable Sensors for the Evaluation of Gait Spatiotemporal Parameters in Progressive Supranuclear Palsy
Carlo Ricciardi,
Noemi Pisani,
Leandro Donisi,
Filomena Abate,
Marianna Amboni,
Paolo Barone,
Marina Picillo,
Mario Cesarelli,
Francesco Amato
Affiliations
Carlo Ricciardi
Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy
Noemi Pisani
Department of Advanced Biomedical Sciences, University of Naples Federico II, 80131 Naples, Italy
Leandro Donisi
Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, 80138 Naples, Italy
Filomena Abate
Center for Neurodegenerative Diseases (CEMAND), Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84131 Salerno, Italy
Marianna Amboni
Center for Neurodegenerative Diseases (CEMAND), Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84131 Salerno, Italy
Paolo Barone
Center for Neurodegenerative Diseases (CEMAND), Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84131 Salerno, Italy
Marina Picillo
Center for Neurodegenerative Diseases (CEMAND), Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84131 Salerno, Italy
Mario Cesarelli
Department of Engineering, University of Sannio, 82100 Benevento, Italy
Francesco Amato
Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy
The use of wearable sensors for calculating gait parameters has become increasingly popular as an alternative to optoelectronic systems, currently recognized as the gold standard. The objective of the study was to evaluate the agreement between the wearable Opal system and the optoelectronic BTS SMART DX system for assessing spatiotemporal gait parameters. Fifteen subjects with progressive supranuclear palsy walked at their self-selected speed on a straight path, and six spatiotemporal parameters were compared between the two measurement systems. The agreement was carried out through paired data test, Passing Bablok regression, and Bland-Altman Analysis. The results showed a perfect agreement for speed, a very close agreement for cadence and cycle duration, while, in the other cases, Opal system either under- or over-estimated the measurement of the BTS system. Some suggestions about these misalignments are proposed in the paper, considering that Opal system is widely used in the clinical context.
