{"id":78169,"date":"2026-01-19T11:21:28","date_gmt":"2026-01-19T10:21:28","guid":{"rendered":"https:\/\/www.he-arc.ch\/?post_type=he-arc_project&p=78169"},"modified":"2026-01-19T11:24:33","modified_gmt":"2026-01-19T10:24:33","slug":"racing-r-based-attractor-complexity-index-for-gait","status":"publish","type":"he-arc_project","link":"https:\/\/www.he-arc.ch\/en\/projets-recherche\/racing-r-based-attractor-complexity-index-for-gait\/","title":{"rendered":"RACING (R-based Attractor Complexity INdex for Gait)"},"content":{"rendered":"\n

Start: 2025 – End: 2026<\/p>\n\n\n\n

RACING (R-based Attractor Complexity INdex for Gait)<\/strong><\/p>\n\n\n\n

Portage vers R des codes d’analyse de la marche pour la pr\u00e9vention des chutes<\/em><\/p>\n\n\n\n

Equipe: <\/strong>Philippe Terrier<\/a><\/p>\n\n\n\n

Contexte:<\/strong><\/p>\n\n\n\n

Les chutes chez les personnes \u00e2g\u00e9es repr\u00e9sentent un enjeu de sant\u00e9 majeur. Notre \u00e9tude ACIER (2021-2024) a \u00e9tudi\u00e9 un algorithme capable d’\u00e9valuer les risques de chute en analysant les subtilit\u00e9s de la d\u00e9marche. Gr\u00e2ce \u00e0 un simple acc\u00e9l\u00e9rom\u00e8tre miniature port\u00e9 au bas du dos, nous pouvons mesurer l’attention n\u00e9cessaire \u00e0 la marche et identifier les personnes vuln\u00e9rables. Le projet RACING cherche \u00e0 mieux diffuser les outils d’analyse d\u00e9velopp\u00e9s pendant cette \u00e9tude.<\/p>\n\n\n\n

Projet en d\u00e9tail:<\/strong><\/p>\n\n\n\n

Entre 2021 et 2024, le projet ACIER a d\u00e9velopp\u00e9 et valid\u00e9 de nouveaux algorithmes d’analyse de la marche utilisant des acc\u00e9l\u00e9rom\u00e8tres portables. Ces algorithmes permettent d’\u00e9valuer le degr\u00e9 d’attention qu’une personne \u00e2g\u00e9e porte \u00e0 sa d\u00e9marche \u2013 un indicateur important du risque de chute. L’\u00e9tude a d\u00e9montr\u00e9 que ces m\u00e9thodes sont plus fiables que les approches existantes.<\/p>\n\n\n\n

Cependant, ces algorithmes ont \u00e9t\u00e9 d\u00e9velopp\u00e9s en Matlab, un logiciel commercial co\u00fbteux. Cette barri\u00e8re financi\u00e8re limite l’acc\u00e8s de nombreux chercheurs et cliniciens \u00e0 ces outils innovants. De plus, les codes sources n’avaient pas encore \u00e9t\u00e9 partag\u00e9s publiquement, emp\u00eachant leur r\u00e9utilisation et leur am\u00e9lioration par la communaut\u00e9 scientifique.<\/p>\n\n\n\n

Objectifs:<\/strong><\/p>\n\n\n\n

Le but de ce projet est triple :<\/p>\n\n\n\n

1. Accessibilit\u00e9 : Porter les algorithmes vers R, un langage de programmation gratuit et open source largement utilis\u00e9 dans la recherche biom\u00e9dicale. Cela permettra \u00e0 davantage de chercheurs et d’institutions d’acc\u00e9der \u00e0 ces outils sans barri\u00e8re financi\u00e8re.<\/p>\n\n\n\n

2. Interop\u00e9rabilit\u00e9 : R dispose d’un \u00e9cosyst\u00e8me riche en packages pour l’analyse de donn\u00e9es biom\u00e9dicales. Le portage facilitera l’int\u00e9gration des m\u00e9thodes ACIER dans les workflows de recherche existants et leur combinaison avec d’autres outils d’analyse.<\/p>\n\n\n\n

3. R\u00e9utilisabilit\u00e9 : Les codes seront document\u00e9s selon les principes FAIR (Findable, Accessible, Interoperable, Reusable) et d\u00e9pos\u00e9s sur la plateforme Zenodo. Cette documentation standardis\u00e9e et les conventions des packages R faciliteront l’adoption et l’am\u00e9lioration par d’autres chercheurs.<\/p>\n\n\n\n

D\u00e9roulement et dur\u00e9e:<\/strong><\/p>\n\n\n\n

Le projet se d\u00e9roule sur 8 mois, de septembre 2025 \u00e0 avril 2026.<\/p>\n\n\n\n

Impact attendu:<\/strong><\/p>\n\n\n\n

Ce projet permettra une diffusion scientifique plus large des m\u00e9thodes innovantes d’analyse de la marche d\u00e9velopp\u00e9es \u00e0 la HE-Arc. Les algorithmes rendus accessibles pourront \u00eatre utilis\u00e9s par d’autres \u00e9quipes de recherche pour \u00e9valuer la qualit\u00e9 de la marche en conditions \u00e9cologiques, favorisant ainsi les collaborations interdisciplinaires et l’innovation dans le domaine de la pr\u00e9vention des chutes.<\/p>\n\n\n\n

\u00c0 terme, cette ouverture des donn\u00e9es et des outils contribuera \u00e0 am\u00e9liorer le d\u00e9pistage pr\u00e9coce des personnes \u00e2g\u00e9es \u00e0 risque de chute, permettant des interventions pr\u00e9ventives plus efficaces et une meilleure pr\u00e9servation de l’autonomie.<\/p>\n\n\n\n

Financement:<\/strong><\/p>\n\n\n\n

Appel \u00e0 projets Open Research Data 2025. Rectorat HES-SO.<\/p>\n\n\n\n

Contact:<\/strong><\/p>\n\n\n\n

\n
\n
\n Philippe Terrier\n <\/div>\n
\n +41 32 930 12 55\n <\/div>\n
\n philippe.terrier@he-arc.ch<\/a>\n <\/div>\n <\/div>\n<\/div>\n\n\n\n

Pour en savoir plus:<\/strong><\/p>\n\n\n\n

Publications issues du projet ACIER :<\/p>\n\n\n\n

\u2022 Piergiovanni, S., Terrier, P. (2024). Validity of Linear and Nonlinear Measures of Gait Variability to Characterize Aging Gait with a Single Lower Back Accelerometer. Sensors<\/em> 24:7427.<\/p>\n\n\n\n

\u2022 Piergiovanni, S., Terrier, P. (2024). Effects of metronome walking on long-term attractor divergence and correlation structure of gait: a validation study in older people. Scientific Reports<\/em> 14.<\/p>\n\n\n\n

Donn\u00e9es brutes de l’\u00e9tude ACIER disponibles sur : https:\/\/doi.org\/10.5281\/zenodo.10148824<\/a><\/p>\n\n\n\n

\u00a9 image: libre de droit<\/p>\n\n\n\n

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