A design rationale for safer terrain park jumps that limit equivalent fall height
نویسندگان
چکیده
منابع مشابه
Modelling the “Pop” in Winter Terrain Park Jumps
Epidemiological studies of injuries at ski resorts have found that jumping generally poses a significantly greater risk of spine and head injuries to patrons. Jumping activities in resorts are now focused in terrain parks over man-made features which provides an opportunity to mitigate injury rates through better engineering design. However, the use of engineering design has been questioned by ...
متن کاملSafer Ski Jump Landing Surface Design Limits Normal Impact Velocity
Skiing and snowboarding have become more acrobatic with terrain park jumps and other manmade features playing a prominent role in an increase in serious spinal cord injuries. Yet these jumps rarely, if ever, involve formal or detailed design or engineering. This paper presents a coherent theory and methodology for the design of ski jump landing surfaces. The motion of the skier center of mass i...
متن کاملTerrain Park Injuries
BACKGROUND This study examined demographics, injury pattern, and hospital outcome in patients injured in winter resort terrain parks. METHODS The study included patients >/=12 years of age who presented to a regional trauma center with an acute injury sustained at a winter resort. Emergency department (ED) research assistants collected patient injury and helmet use information using a prospec...
متن کاملA cockroach that jumps.
We report on a newly discovered cockroach (Saltoblattella montistabularis) from South Africa, which jumps and therefore differs from all other extant cockroaches that have a scuttling locomotion. In its natural shrubland habitat, jumping and hopping accounted for 71 per cent of locomotory activity. Jumps are powered by rapid and synchronous extension of the hind legs that are twice the length o...
متن کاملinvestigating the feasibility of a proposed model for geometric design of deployable arch structures
deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
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ژورنال
عنوان ژورنال: Sports Engineering
سال: 2015
ISSN: 1369-7072,1460-2687
DOI: 10.1007/s12283-015-0182-6