ISSUE ADDRESSED Australia has national, state and city targets to increase levels of cycling. The possible effect of repealing mandatory bicycle helmet legislation on the frequency of cycling in Sydney is examined. METHODS A cross sectional survey by a market research company was conducted, using quota sampling, in Sydney, Australia. Participants were 600 residents aged 16 years and older. Da...

In many domains risky health behavior is still only poorly understood. Analysis is often plagued by incomplete data and a general lack of information. In this study, we try to understand the determinants of helmet use among motorcyclists in Delhi, a context in which road safety is very low. We use a very detailed data set collected especially for the purpose of the study. To guide our empirical...

BACKGROUND Motorcycle crashes are the cause of severe morbidity and mortality especially because of head injuries. It seems that wearing a helmet has an effective role in protection against head injuries. Nevertheless, motorcyclists usually have no tendency to wear a helmet when driving in cities and have several reasons for this behavior. OBJECTIVES This study aimed to evaluate the use and r...

Safety helmets play a vital role in protecting workers’ heads. In order to improve the accuracy of detection model complex environments, such as backgrounds and different lighting distances, we propose safety helmet-wearing algorithm based on improved YOLOv7. backbone network, 16-channel features are used replace 3-channel RGB features. Structured pruning is performed head loss function replace...

BACKGROUND The effectiveness of helmets in reducing the risk of severe head injury in motorcyclists who were involved in a crash is well established. There is limited evidence however, regarding the extent to which helmets protect riders from facial injuries. The objective of this study was to determine the effect of helmet type, components and fixation status on the risk of facial injuries amo...

OBJECTIVE To determine the effectiveness of helmet therapy for positional skull deformation compared with the natural course of the condition in infants aged 5-6 months. DESIGN Pragmatic, single blinded, randomised controlled trial (HEADS, HElmet therapy Assessment in Deformed Skulls) nested in a prospective cohort study. SETTING 29 paediatric physiotherapy practices; helmet therapy was adm...

BACKGROUND Noninvasive ventilation (NIV) has proved to be a useful technique for breathing support. However, complications, discomfort, and failure of NIV were commonly caused by the mask. Therefore, the helmet was developed to improve performance and reduce complications; however, there has been no conclusive results on its effect until now. Thus, we performed a systematic review and meta-anal...

OBJECTIVE National Football League (NFL) concussions occur at an impact velocity of 9.3 +/- 1.9 m/s (20.8 +/- 4.2 mph) oblique on the facemask, side, and back of the helmet. There is a need for new testing to evaluate helmet performance for impacts causing concussion. This study provides background on new testing methods that form a basis for supplemental National Operating Committee on Standar...

The present work is focused on the aerodynamic study of different parameters, including both the posture of a cyclist's upper limbs and the saddle position, in time trial (TT) stages. The aerodynamic influence of a TT helmet large visor is also quantified as a function of the helmet inclination. Experiments conducted in a wind tunnel on nine professional cyclists provided drag force and frontal...