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Article

IceSense Proof of Concept: Calibrating an Instrumented Figure Skating Blade to Measure On-Ice Forces

1
Department of Exercise Sciences, Brigham Young University, Provo, UT 84602, USA
2
Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602, USA
3
Department of Exercise Science and Athletic Training, Ithaca College, Ithaca, NY 14850, USA
4
Blue Elm Consulting, Farmington, UT 84025, USA
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(24), 7082; https://doi.org/10.3390/s20247082
Received: 19 October 2020 / Revised: 30 November 2020 / Accepted: 4 December 2020 / Published: 10 December 2020
(This article belongs to the Section Physical Sensors)
Competitive figure skaters often suffer from overuse injuries, which may be due to the high impact forces endured during jump repetitions performed in practice and competition. However, to date, forces during on-ice figure skating have not been quantified due to technological limitations. The purpose of this study was to determine the optimal calibration procedure for a previously developed instrumented figure skating blade (IceSense). Initial calibration was performed by collecting data from the blade while 11 skaters performed off-ice jumps, landing on a force plate in the lab. However, mean peak force measurements from the blade were greater than the desired error threshold of ±10%. Therefore, we designed a series of controlled experiments which included measuring forces from a load cell rigidly attached to the top of the blade concurrently with strain data from the strain gauges on the blade. Forces were applied to the blade by adding weight to a drop tower or by manually applying force in a quasi-static manner. Both methods showed similar accuracy, though using the drop tower allowed precise standardization. Therefore, calibration was performed using the weighted drop method. This calibration was applied to strain gauge data from out-of-sample drop trials, resulting in acceptable estimates of peak force (less than 10% error). Using this calibration, we collected data on one figure skater and present results from an exemplar on-ice double flip jump. Using the IceSense device to quantify on-ice forces in a research setting may help inform training, technique, and equipment design. View Full-Text
Keywords: force; validation; calibration; figure skating; on ice force; validation; calibration; figure skating; on ice
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MDPI and ACS Style

Ridge, S.; Bruening, D.; Charles, S.; Stahl, C.; Smith, D.; Reynolds, R.; Adamo, B.; Harper, B.; Adair, C.; Manwaring, P.; King, D. IceSense Proof of Concept: Calibrating an Instrumented Figure Skating Blade to Measure On-Ice Forces. Sensors 2020, 20, 7082. https://doi.org/10.3390/s20247082

AMA Style

Ridge S, Bruening D, Charles S, Stahl C, Smith D, Reynolds R, Adamo B, Harper B, Adair C, Manwaring P, King D. IceSense Proof of Concept: Calibrating an Instrumented Figure Skating Blade to Measure On-Ice Forces. Sensors. 2020; 20(24):7082. https://doi.org/10.3390/s20247082

Chicago/Turabian Style

Ridge, Sarah, Dustin Bruening, Steven Charles, Cody Stahl, Daniel Smith, Riley Reynolds, Brandon Adamo, Blake Harper, Chris Adair, Preston Manwaring, and Deborah King. 2020. "IceSense Proof of Concept: Calibrating an Instrumented Figure Skating Blade to Measure On-Ice Forces" Sensors 20, no. 24: 7082. https://doi.org/10.3390/s20247082

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