Force transducer system for measurement of ice hockey skating force

Stidwill, T. J.; Turcotte, R.; Dixon, Philippe C.; Pearsall, David J.

doi:10.1007/s12283-009-0033-4

Cited by 15 publications

(20 citation statements)

References 10 publications

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“…The study on the construction and calibration of an instrumented ice hockey skate did [9]. The RMS errors of the instrumented klapskates are similar to those of the ice hockey skates, with an RMS in normal direction of 42 N for the klapskates versus 68 N for the ice hockey skates and an RMS in lateral direction of 27 N for the klapskates and 40 N for the ice hockey skates.…”

Section: Construction and Calibrationmentioning

confidence: 87%

“…Since also the relationship between the forward velocity (performance) and the measured forces had not completely been grasped yet, literature did not provide us with an adequate benchmark for the accuracy requirement for an instrumented skate. One study has been published on the construction and calibration of an instrumented ice hockey skate, which measured the forces in normal direction and lateral direction, with strain gauges, and reported on the calibration accuracies in the separate directions [9]. Their skates were calibrated with an error of 68 N in normal direction and 40 N in lateral direction.…”

Section: Introductionmentioning

confidence: 99%

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Wireless instrumented klapskates for long-track speed skating

et al. 2016

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In the current project, we aim to provide speed skaters with real-time feedback on how to improve their skating performance within an individual stroke. The elite skaters and their coaches wish for a system that determines the mechanical power per stroke. The push-off force of the skater is a crucial variable in this power determination. In this study, we present the construction and calibration of a pair of wireless instrumented klapskates that can continuously and synchronously measure this push-off force in both the lateral direction and normal direction of the skate and the centre of pressure of these forces. The skate consists of a newly designed rigid bridge (0.6 kg), embedding two three-dimensional force sensors (Kistler 9602, Kistler Group, Winterthur, Switzerland), which fits between most individual skate shoes and Maple skate blades. The instrumented klapskates were calibrated on a tensile testing machine, where they proved to be unaffected to temperature conditions and accurate up to an RMS of 42 N (SEM = 1 N) in normal and up to an RMS of 27 N (SEM = 1 N) in lateral direction. Furthermore, the centre of pressure of these forces on the blade was determined up to a mean error of 10.1 mm (SD = 6.9 mm). On-ice measurements showed the possibility of recording with both skates simultaneously and synchronously, straights as well as curves. The option to send data wirelessly and realtime to other devices makes it possible to eventually provide skaters and coaches with visual real-time feedback during practice.

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Section: Construction and Calibrationmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Wireless instrumented klapskates for long-track speed skating

et al. 2016

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“…These non-zero blade angles and dynamic loading rates may have contributed to the reduction in accuracy for the Static LSQ crossvalidation landing. Stidwill et al [4] reported a small dependence on loading rate in their straingauge instrumented hockey blade. The dynamic cross-validation resulted in measurements from the blade that were more similar to those obtained from the force plate than when using the Static LSQ.…”

Section: Discussionmentioning

confidence: 99%

“…Due to the intricacy of figure skating jumps, adding weight and height to a skater's boot could markedly change their ability to perform these skills. Other researchers measured forces experienced by ice-hockey skaters using strain gauges attached directly to the blade holder of hockey boots [4]. Although the instrumentation carried in a backpack in that study is not practical for figure skaters, their data showed that measuring on-ice impact forces through the use of strain gauges was possible.…”

Section: Introductionmentioning

confidence: 96%

“…Non-normal forces may be substantial in skating due to the large angles between the blade and ice during take-off and landing. Forces have been measured during other on-ice sports, specifically speed skating and ice hockey [4,5]. In one study measuring on-ice forces during speed skating, a custom-made force transducer was inserted between the skating boot and the blade [5].…”

Section: Introductionmentioning

confidence: 99%

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Instrumented figure skating blade for measuring on-ice skating forces

Smith

Robinson

Hawks

et al. 2014

Meas. Sci. Technol.

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Competitive figure skaters experience substantial, repeated impact loading during jumps and landings. Although these loads, which are thought to be as high as six times body weight, can lead to overuse injuries, it is not currently possible to measure these forces on-ice. Consequently, efforts to improve safety for skaters are significantly limited. Here we present the development of an instrumented figure skating blade for measuring forces on-ice. The measurement system consists of strain gauges attached to the blade, Wheatstone bridge circuit boards, and a data acquisition device. The system is capable of measuring forces in the vertical and horizontal directions (inferior-superior and anterior-posterior directions, respectively) in each stanchion with a sampling rate of at least 1000 Hz and a resolution of approximately one-tenth of body weight. The entire system weighs 142 g and fits in the space under the boot. Calibration between applied and measured force showed excellent agreement (R > 0.99), and a preliminary validation against a force plate showed good predictive ability overall (R ≥ 0.81 in vertical direction). The system overestimated the magnitude of the first and second impact peaks but detected their timing with high accuracy compared to the force plate.

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