Freezing of gait (FoG) is often described in subjects with Parkinson's disease (PD) as a sudden inability to continue the forward walking progression. FoG occurs most often during turning, especially at sharp angles. Here, we investigated 180 and 360 degrees turns in two groups: PD subjects reporting FoG (FoG+), and PD subjects without FoG (FoG-). Forty-three subjects (25 FoG+, 18 FoG-) wore an inertial sensor on their back while walking back and forth continuously for 2 min (reversing direction with a 180° turn), and while turning in place for 1 min (alternating 360° turning in opposite directions). Objective measures (turn duration, peak velocity, jerkiness and range of acceleration) were computed during the turns and compared across FoG+ and FoG-groups. Results showed that FoG+ compared to FoG-took significantly a longer time to complete 360° turns than 180° turns. A significant lower turn peak velocity, higher jerkiness and an increased range of medio-lateral acceleration was also found in FoG+. Significant differences between the two groups across the two turning tasks validated the hypothesis that sharper turns might cause higher instability in FoG+ compared to FoG-.

An objective assessment to investigate the impact of turning angle on freezing of gait in Parkinson's disease / Bertoli, Matilde; Cereatti, Andrea; Della Croce, Ugo; Mancini, Martina. - ELETTRONICO. - (2017), pp. 1-4. (Intervento presentato al convegno 2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017 tenutosi a Torino; Italy) [10.1109/BIOCAS.2017.8325122].

An objective assessment to investigate the impact of turning angle on freezing of gait in Parkinson's disease

Bertoli, Matilde
;
Della Croce, Ugo;
2017

Abstract

Freezing of gait (FoG) is often described in subjects with Parkinson's disease (PD) as a sudden inability to continue the forward walking progression. FoG occurs most often during turning, especially at sharp angles. Here, we investigated 180 and 360 degrees turns in two groups: PD subjects reporting FoG (FoG+), and PD subjects without FoG (FoG-). Forty-three subjects (25 FoG+, 18 FoG-) wore an inertial sensor on their back while walking back and forth continuously for 2 min (reversing direction with a 180° turn), and while turning in place for 1 min (alternating 360° turning in opposite directions). Objective measures (turn duration, peak velocity, jerkiness and range of acceleration) were computed during the turns and compared across FoG+ and FoG-groups. Results showed that FoG+ compared to FoG-took significantly a longer time to complete 360° turns than 180° turns. A significant lower turn peak velocity, higher jerkiness and an increased range of medio-lateral acceleration was also found in FoG+. Significant differences between the two groups across the two turning tasks validated the hypothesis that sharper turns might cause higher instability in FoG+ compared to FoG-.
2017
2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017
PD; FoG; turn; inertial sensor
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
An objective assessment to investigate the impact of turning angle on freezing of gait in Parkinson's disease / Bertoli, Matilde; Cereatti, Andrea; Della Croce, Ugo; Mancini, Martina. - ELETTRONICO. - (2017), pp. 1-4. (Intervento presentato al convegno 2017 IEEE Biomedical Circuits and Systems Conference, BioCAS 2017 tenutosi a Torino; Italy) [10.1109/BIOCAS.2017.8325122].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1105885
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