Risk of tripping, minimum foot clearance, and step length when crossing a barrier

Source avec lien : International Journal of Industrial Ergonomics, 83, . 10.1016/j.ergon.2021.103138

Cette étude a été conçue pour étudier les paramètres de la démarche lors du franchissement d’une barrière et les facteurs environnementaux influençant la perception du risque de trébuchement. Ces facteurs comprennent l’éclairage et les conditions de la barrière. Les conditions de la barrière ont été divisées en hauteur, type et couleur de la barrière. Les conditions d’illumination comprenaient des conditions normales et des conditions de gradation. Douze participants masculins ont été recrutés. Ils ont marché sur une passerelle, en passant au-dessus d’une barrière. Ils ont donné une évaluation subjective du risque de trébuchement (SRRT) avant et après la marche. Un assistant de recherche a enregistré une évaluation de la perturbation de la marche (GDR) du participant lors du franchissement de la barrière. Le dégagement minimal du pied (MFC) du pied avant et du pied arrière lors du passage de la barrière, ainsi que la longueur du pas du participant avant et après le passage de la barrière ont été calculés.

This study was designed to investigate gait parameters upon crossing a barrier and environmental factors influencing the perceived risk of tripping. These factors included illumination and barrier conditions. Barrier conditions were divided into height, type, and color of the barrier. Illumination conditions included normal and dimmed conditions. Twelve male participants were recruited. They walked on a walkway, moving over a barrier. They gave a subjective rating of risk of tripping (SRRT) both before and after the walk. A research assistant recorded a gait disturbance rating (GDR) of the participant upon barrier crossing. The minimum foot clearance (MFC) of both the leading and lagging foot when moving over the barrier, and the step length of the participant before and after crossing the barrier were calculated. The results indicated that the SRRT, both before and after the walk, was significantly (p < 0.0001) higher when the barrier height increased. Increased barrier height caused significantly (p < 0.0001) higher GDR. The barrier type (p < 0.01) and illumination conditions (p < 0.001) had significant effects on the MFC of both the leading and the lagging foot. The color (p < 0.05) and height (p < 0.05) of the barrier also influenced the MFC of the lagging foot significantly. Step length of the leading foot when crossing the barrier was significantly affected by illumination condition (p < 0.001) and barrier type (p < 0.05). The results of the study are helpful in understanding the mechanisms brought into play when moving over barriers on walkways. They provide meaningful information that will help in reducing trip and fall accidents. Consultez la page de l’article

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