An intelligent curve warning system for road cycling races
AbstractTo mitigate the incidence of the crashes in road cycling races, new technologies that can help the riders in evaluating risks in advance are called for. An advanced rider assistance system has been developed to warn the riders before they negotiate a corner during a fast-descending section. The advanced rider assistance system was based on the optimal manoeuvre method applied to a state-of-the-art cycling locomotion model. Global positioning system data collected at 1 Hz were used to compute initial conditions for the optimal manoeuvre calculation. The advanced rider assistance system was deployed on a mobile dev...
Source: Sports Engineering - September 1, 2021 Category: Sports Medicine Source Type: research
Performance of a novel football helmet technology on head impact kinematics
AbstractIn the effort to reduce concussions in American football, helmet manufacturers are seeking new technologies to reduce peak head impact kinematics. However, the efficacy of these new helmet technologies is unknown. Therefore, the purpose of this study was to evaluate the influence of an intermediary liner on the blunt impact kinematic performance of an American football helmet using a custom test similar to the NOCSAE (ND-081) and NFL linear impactor test methods. Twelve Schutt F7 football helmets with the Radian Diffusion System technology were evaluated under three conditions: with the system (hypothesized to func...
Source: Sports Engineering - August 28, 2021 Category: Sports Medicine Source Type: research
New initiative: & quot;Ten Questions in Sports Engineering & quot; papers
(Source: Sports Engineering)
Source: Sports Engineering - August 23, 2021 Category: Sports Medicine Source Type: research
Thermoregulatory sex differences among surfers during a simulated surf session
AbstractThe purpose of this study was to test the hypothesis that under controlled surf conditions, sex differences in skin temperature exist, but core temperature would not vary between sexes when performing a simulated surf session while wearing a 2-mm wetsuit. Twenty male and 13 female surfers engaged in a 60-min simulated surf protocol using a custom 2-mm wetsuit in an Endless Pool Elite Flume with water temperature set to 15.6 °C. Participants were instrumented with a heart rate monitor, eight skin temperature sensors, and a disposable sensor for measurement of core temperature. The surf simulation consisted of pad...
Source: Sports Engineering - August 9, 2021 Category: Sports Medicine Source Type: research
Computational methods for the investigation of ski boots ergonomics
AbstractSki boots are known to cause vasoconstriction in the wearer ’s lower limbs and, thus, cause a “cold leg” phenomenon. To address this problem, this work provides a computational framework for analysing interactions between the ski boot and the lower limb. The geometry of the lower limb was derived from magnetic resonance imaging and computed tomography techniques and anthropometric data. The geometry of the ski boot shell was obtained by means of three-dimensional computer aided design models from a manufacturer. Concerning the ski boot liner, laser scanning techniques were implemented to capture the geometry ...
Source: Sports Engineering - June 25, 2021 Category: Sports Medicine Source Type: research
Correction to: Aerodynamic analysis of uphill drafting in cycling
A correction to this paper has been published: https://doi.org/10.1007/s12283-021-00351-4 (Source: Sports Engineering)
Source: Sports Engineering - June 14, 2021 Category: Sports Medicine Source Type: research
Dynamic testing to determine and predict trampoline function
AbstractSafety standards for domestic trampolines are based on static-load testing using a factor of five times the maximum intended user mass. This paper presents a dynamic test method for trampolines, and provides measures of the users ’ performance (e.g., peak acceleration, Accmax) and injury risk (e.g., mean rate of change of acceleration, Jerkmean). Uniform masses (41 –116 kg) were dropped from 0.66 m onto the bed centre of nineteen different trampolines. Trampoline bed and spring stretches, mass flight time (FlightT) and accelerations were recorded using motion capture and accelerometers. Thirty-seven percent o...
Source: Sports Engineering - May 22, 2021 Category: Sports Medicine Source Type: research
Customised pressure profiles of made-to-measure sports compression garments
AbstractThe purpose of this study was to make made-to-measure compression garments that elicit pressures within and below clinical standards. The study also examined whether pressures and gradients can be replicated within and between participants ’ legs, and between separate compression garment conditions. Ten males volunteered to participate. Based on three-dimensional scans of the participants’ lower body, three different made-to-measure garments were manufactured: control, symmetrical and asymmetrical. Garment pressures were assessed from the malleolus to the gluteal fold using a pressure monitoring device. A root ...
Source: Sports Engineering - May 22, 2021 Category: Sports Medicine Source Type: research
Dynamic testing to determine and predict trampoline function
AbstractSafety standards for domestic trampolines are based on static-load testing using a factor of five times the maximum intended user mass. This paper presents a dynamic test method for trampolines, and provides measures of the users ’ performance (e.g., peak acceleration, Accmax) and injury risk (e.g., mean rate of change of acceleration, Jerkmean). Uniform masses (41 –116 kg) were dropped from 0.66 m onto the bed centre of nineteen different trampolines. Trampoline bed and spring stretches, mass flight time (FlightT) and accelerations were recorded using motion capture and accelerometers. Thirty-seven percent o...
Source: Sports Engineering - May 22, 2021 Category: Sports Medicine Source Type: research
Customised pressure profiles of made-to-measure sports compression garments
AbstractThe purpose of this study was to make made-to-measure compression garments that elicit pressures within and below clinical standards. The study also examined whether pressures and gradients can be replicated within and between participants ’ legs, and between separate compression garment conditions. Ten males volunteered to participate. Based on three-dimensional scans of the participants’ lower body, three different made-to-measure garments were manufactured: control, symmetrical and asymmetrical. Garment pressures were assessed from the malleolus to the gluteal fold using a pressure monitoring device. A root ...
Source: Sports Engineering - May 22, 2021 Category: Sports Medicine Source Type: research
Methods for estimating moment of inertia of cricket bats
This study showed that a two-section beam model and first moment method for estimating cricket bat moment of inertia could be used to improve bat selection. (Source: Sports Engineering)
Source: Sports Engineering - May 8, 2021 Category: Sports Medicine Source Type: research
