About 4,200 athletes from about 165 countries competed for medals at the London 2012 Paralympic Games impressively demonstrating the high standards of international disabled sport. One example of this was the 24:50, 22 minutes that it took former Formula 1 racing driver Alessandro Zanardi to cover the specified 16km in the hand bike time trial to win the gold medal.
Whereas sports equipment such as hand bikes are individually built and totally customised to the specific requirements of the athletes and their physical impairment, as far as their clothing is concerned they frequently only have access to the ready-made clothes for able-bodied athletes. Within the framework of the research project (AiF-Nr. 17377 N), scientists at the Hohenstein Institute in Bönnigheim are aiming to optimise functionality and comfort of sportswear for wheelchair users.
Project leader Anke Klepser ascertained the physical dimensions of male wheelchair basket ball players and hand bikers: “By choosing these particular sports we are covering both indoor and outdoor sports which means that our research results can also be adapted to other sports disciplines.
A further benefit is that we are examining two different body postures, the more horizontal body position of the hand bikers and the upright sitting position of the wheelchair basketball players and this enables any results to be easily transferred to other sports.” The test persons were measured once in a stationary 3D Bodyscanner in their usual wheelchair and then also with a handscanner in their respective sports wheelchair.
Back in the 1980s clothing technology experts had already captured the physical dimensions of wheelchair users in order to improve the fit of everyday clothing. With the assistance of today's 3D scanner technology first of all the body can be captured in full and then a virtual twin (avatar) can be compiled which can be used to measure on the computer, as required, individual body measurements such as the back, legs or arms.
An important objective of the project is to use the measurement data to optimise the cuts and seam lines of sportswear. But also the physiological comfort, or in other words, the ability of the textiles to absorb body sweat and divert it away from the body as well as the heat insulation of the materials should also be adapted to the specific requirements of the athletes. Skin irritations caused by mechanical actions such as intensive friction of the arms on the upper body should be minimised in the demonstration/functional samples that are to be developed.
The sitting position of wheelchair users in particular creates specific requirements for clothing cuts. In order to achieve a horizontal waistband fit, the back part of the trousers must be cut longer than the front. The horizontal position of the handbikers on the other hand requires the exact opposite in functionalities if the sportswear is to sit in the optimum position. In the majority of wheelchair athletes the upper body and arms are very muscular which must be taken into consideration in the design of shirts and jackets. To create a good fit with extensive freedom of movement, the clothing items should therefore have adapted seam lines.
In addition to the anatomical specifics, as part of their project, the researchers also collated those special requirements which arise from the sports commitment of the athletes. Therefore, in addition to the 3D scanner measurements, Anke Klepser has also conducted a survey to collate the optimisation wishes of the test persons. For instance, the hand bikers said that they would like to see a narrow lower leg trouser width which would offer them better head wind protection.
The scientists also had to consider the specific requirements of disabled athletes in relation to the diversion of body sweat, also known as clothing moisture management. Due to the position of the back or back of the thigh which is in close contact with the hand bike or wheel chair, moisture can very quickly get trapped. This could be avoided through the use of various suitable materials and functional designs in these areas (Comfort-Mapping)
In contrast to this, depending on the type and degree of the spinal cord injury, for the majority of wheelchair athletes, the paralysis of the extremities is also linked to a restricted functionality of the body's own temperature control. For example, quadriplegics whose legs and arms are affected to a greater or lesser extent by the paralysis, do not sweat or only sweat to a limited extent and run the risk, especially in the case of very high external temperatures and/or high physical exertion, of suffering a circulatory collapse due to the body overheating. Water applied externally to the clothing can help in such cases by ensuring the necessary cooling through evaporation. Anke Klepser and her team also had to consider other specific aspects in their research work. "The clothing requirements for wheelchair athletes are extremely variable and complex. We hope that our data and information will form the basis for many optimised products which will make life easier for the athletes and will support them appropriately in their outstanding achievements. It is expected that the results of the project will be available for interested manufacturers from early 2014.Contact:
Rose-Marie Riedl | Hohenstein Institute
Graphene is strong, but is it tough?
05.02.2016 | DOE/Lawrence Berkeley National Laboratory
New Type of Nanowires, Built with Natural Gas Heating
05.02.2016 | Ulsan National Institute of Science and Technology (UNIST)
1,5 Millionen Euro für die Weiterentwicklung der Magnetresonanztomografie an Prof. Dr. Jürgen Hennig / Förderung durch die Deutsche Forschungsgemeinschaft (DFG) / Medizinische Relevanz: Direktes Beobachten schneller Veränderungen in Anatomie und Aktivität des Gehirns, etwa nach einem Schlaganfall / Bereits heute nicht-invasive Ortung von Epilepsieherden im Gehirn möglich
Bildgebende Verfahren für das Gehirn sind entweder schnell oder detailliert. Wie diese Faktoren bei der funktionellen Magnetresonanztomografie (fMRT)...
Pollens, the bane of allergy sufferers, could represent a boon for battery makers: Recent research has suggested their potential use as anodes in lithium-ion batteries.
"Our findings have demonstrated that renewable pollens could produce carbon architectures for anode applications in energy storage devices," said Vilas Pol, an...
Projekt OmniSteer startet mit 3,4 Millionen Euro Budget, um urbane Manövrierfähigkeit von Autos zu steigern
Autos steigern die Mobilität ihrer Nutzer. In engen Innenstädten jedoch stoßen sie an die Grenzen der eigenen Manövrierfähigkeit. Etwa für Vielparker wie...
Automobiles increase the mobility of their users. However, their maneuverability is pushed to the limit by cramped inner city conditions. Those who need to...
Hochautomatisiertes Fahren setzt voraus, dass Fahrzeuge Fehler selbstständig beheben können, bis der Fahrer in der Lage ist, selbst einzugreifen. Dazu muss im Bordnetz des Autos die Ausfallsicherheit kritischer Funktionen garantiert sein. Das Fraunhofer ESK zeigt auf der Embedded World in Nürnberg (23. bis 25. Februar), wie das mit Erweiterungen des aktuellen AUTOSAR-Standards umzusetzen ist. Hierfür stellen die ESK-Forscher auch eine Werkzeugkette vor, mit der solche Bordnetze entwickelt werden können (Halle 4 / Stand 460).
Fällt in einem hochautomatisierten Fahrzeug eine Steuerungseinheit aus, muss das Fahrzeug selbstständig reagieren, bis der Fahrer eingreifen und das Fahren...
08.02.2016 | Veranstaltungen
08.02.2016 | Veranstaltungen
08.02.2016 | Veranstaltungen
08.02.2016 | Unternehmensmeldung
08.02.2016 | Veranstaltungsnachrichten
08.02.2016 | Seminare Workshops