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Validity of Hololens Augmented Reality Head Mounted Display for Measuring Gait Parameters in Healthy Adults and Children with Cerebral Palsy

1
Pôle Recherche & Innovation, Fondation Ellen Poidatz, 77310 Saint-Fargeau-Ponthierry, France
2
IBISC Lab, University Paris-Saclay, University Evry, 91020 Evry, France
*
Author to whom correspondence should be addressed.
Academic Editor: Susanna Spinsante
Sensors 2021, 21(8), 2697; https://doi.org/10.3390/s21082697
Received: 23 February 2021 / Revised: 31 March 2021 / Accepted: 8 April 2021 / Published: 11 April 2021
Serious games are a promising approach to improve gait rehabilitation for people with gait disorders. Combined with wearable augmented reality headset, serious games for gait rehabilitation in a clinical setting can be envisaged, allowing to evolve in a real environment and provide fun and feedback to enhance patient’s motivation. This requires a method to obtain accurate information on the spatiotemporal gait parameters of the playing patient. To this end, we propose a new algorithm called HoloStep that computes spatiotemporal gait parameters using only the head pose provided by an augmented reality headset (Hololens). It is based on the detection of peaks associated to initial contact event, and uses a combination of locking distance, locking time, peak amplitude detection with custom thresholds for children with CP. The performance of HoloStep was compared during a walking session at comfortable speed to Zeni’s reference algorithm, which is based on kinematics and a full 3D motion capture system. Our study included 62 children with cerebral palsy (CP), classified according to Gross Motor Function Classification System (GMFCS) between levels I and III, and 13 healthy participants (HP). Metrics such as sensitivity, specificity, accuracy and precision for step detection with HoloStep were above 96%. The Intra-Class Coefficient between steps length calculated with HoloStep and the reference was 0.92 (GMFCS I), 0.86 (GMFCS II/III) and 0.78 (HP). HoloStep demonstrated good performance when applied to a wide range of gait patterns, including children with CP using walking aids. Findings provide important insights for future gait intervention using augmented reality games for children with CP. View Full-Text
Keywords: spatiotemporal gait parameters; augmented reality; wearable device; cerebral palsy; concurrent validity spatiotemporal gait parameters; augmented reality; wearable device; cerebral palsy; concurrent validity
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MDPI and ACS Style

Guinet, A.-L.; Bouyer, G.; Otmane, S.; Desailly, E. Validity of Hololens Augmented Reality Head Mounted Display for Measuring Gait Parameters in Healthy Adults and Children with Cerebral Palsy. Sensors 2021, 21, 2697. https://doi.org/10.3390/s21082697

AMA Style

Guinet A-L, Bouyer G, Otmane S, Desailly E. Validity of Hololens Augmented Reality Head Mounted Display for Measuring Gait Parameters in Healthy Adults and Children with Cerebral Palsy. Sensors. 2021; 21(8):2697. https://doi.org/10.3390/s21082697

Chicago/Turabian Style

Guinet, Anne-Laure, Guillaume Bouyer, Samir Otmane, and Eric Desailly. 2021. "Validity of Hololens Augmented Reality Head Mounted Display for Measuring Gait Parameters in Healthy Adults and Children with Cerebral Palsy" Sensors 21, no. 8: 2697. https://doi.org/10.3390/s21082697

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