spinfortec2022 : Tagungsband zum 14. Symposium der Sektion Sportinformatik und Sporttechnologie der Deutschen Vereinigung für Sportwissenschaft (dvs), Chemnitz 29. - 30. September 2022

Dieser Tagungsband enthält die Beiträge aller Vorträge und Posterpräsentationen des 14. Symposiums der Sektion Sportinformatik und Sporttechnologie der Deutschen Vereinigung für Sportwissenschaft (dvs) an der Technischen Universität Chemnitz (29.-30. September 2022). Mit dem Ziel, das Forschungsfeld der Sportinformatik und Sporttechnologie voranzubringen, wurden knapp 20 vierseitige Beiträge eingereicht und in den Sessions Informations- und Feedbacksysteme im Sport, Digitale Bewegung: Datenerfassung, Analyse und Algorithmen sowie Sportgeräteentwicklung: Materialien, Konstruktion, Tests vorgestellt.This conference volume contains the contributions of all oral and poster presentations of the 14th Symposium of the Section Sport Informatics and Engineering of the German Association for Sport Science (dvs) at Chemnitz University of Technology (September 29-30, 2022). With the goal of advancing the research field of sports informatics and sports technology, nearly 20 four-page papers were submitted and presented in the sessions Information and Feedback Systems in Sport, Digital Movement: Data Acquisition, Analysis and Algorithms, and Sports Equipment Development: Materials, Construction, Testing

Comparison of test methods to quantify shock attenuating properties of athletic footwear

AbstractThe purpose of the presented study was to compare the results of ASTM F 1614 Procedure A, Procedure B and the HIT method to quantify the shock attenuating properties of 29 commercially available running shoes. The performed tests revealed a different behavior of the three procedures regarding loading time (ASTM-A: material depending, x¯=16ms±2; ASTM-B: 20 ms; HIT: 35 ms) and peak force (ASTM-A: material depending, x¯=992N±92; ASTM-B: material depending, x¯=985N±110; HIT: 1500 N). Because of viscoelastic material behavior those test methods resulted in different ratings regarding the shock absorbing abilities of the investigated samples

Modelling Head Impact Safety Performance of Polymer-based Foam Protective Devices

The aim of this paper is to investigate an iterative statistical procedure, based on a small and censored sample of impact test experiments, useful for interval estimation of head impact safety parameter as critical fall height of protective devices. An adaptive testing routine was developed that was mainly constituted by a series of at least four impact test experiments, followed by the comparison of at least two parameter estimates based on incremental exponential regression fittings and a final confirmation experiment. A total number of 23 protective devices, mainly made of polyethylene foam, were investigated in order to validate the adaptive routine. The routine, applied to critical fall height of protective devices, was 19 times convergent within a maximum of 6 impact test experiments. 4 times the sample was censored because the iterative procedure has exceeded the available number of specimens. Confidence intervals at the 90 % level were always less than 0.18 m. The applicability of the adaptive routine was satisfactory demonstrated with reference to devices made of PE-foam and safety threshold of peak acceleration a-max equal to 200 g. The target of a confidence interval below the state-of-art was achieved

Towards innovative road cycle gloves for low vibration transmission

AbstractThis research activity aims to develop new cycling gloves. A first step was focused on the definition of the functional requirements through user centred design methods. Since vibrations coming to the hand-arm system of a cyclist have a considerable effect a second step was concentrated on the analysis of hand-arm vibrations in road cycling. The paper shows results of laboratory tests executed for three different hand sizes, three different frequency ranges, with two different type of gloves and without gloves. Load conditions used for the test were determined with a former field test. Results obtained were analysed using Analysis of Variance (ANOVA), that showed no significant effect of existing gloves in reducing vibration transmissibility. This led to the need of new kind of cycling gloves that could reduce those vibrations and increase the cyclist's comfort

Analyse von Einflussfaktoren auf die Gurtkräfte am Rucksack

Zur Evaluierung des mechanischen Tragekomforts von Rucksäcken wurden die Einflussfaktoren Geschlecht, Last und Bewegung auf die Gurtkräfte am Rucksack untersucht. Dazu wurde ein individuelles Messsystem entwickelt. Aus der Datenanalyse lässt sich folgern, dass die Gurtkraft nicht vom Geschlecht des Rucksackträgers abhängt. Die Rucksacklast und die Form der Aktivität hingegen sind relevante Indikatoren.To evaluate the mechanical wearing comfort of backpacks, the factors influencing the strap forces on the backpack were investigated, namely gender, load and movement. An individual measurement system was developed for this purpose. From the data analysis, it can be concluded that the strap force does not depend on the gender of the backpack wearer. The backpack load and the form of the activity, on the other hand, are relevant indicators

Evaluierung des mechanischen Komforts von Sitzpolstern in Radhosen - Eine initiale Datenanalyse

Um den Einfluss des Sitzpolsters in Radhosen auf den mechanischen Komfort besser zu verstehen, wurden der Satteldruck und die Beckenbewegung in Abhängigkeit der Belastungsintensität sowie -dauer beim Radfahren analysiert. Die Ergebnisse der initialen Datenanalyse deuten darauf hin, dass weniger die Stabilitätsparameter, sondern eher die Druckwahrnehmung für die Beurteilung des mechanischen Komforts maßgeblich ist.In order to better understand the influence of the seat pad in cycling shorts on mechanical comfort, saddle pressure and pelvic movement were analyzed as a function of load intensity as well as duration during cycling. The results of the initial data analysis indicate that it is not so much the stability parameters but rather the pressure perception that is decisive for the assessment of mechanical comfort