Open Access
Validation of inertial measurement units for tracking 100m sprint data
Lucy Parrington,Elissa Phillips,Andrew K. C. Wong,Mark Finch,Elizabeth Wain,Clare MacMahon +5 more
- Vol. 34, Iss: 1
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TLDR
In this paper, the accuracy of an inertial measurement unit during 100m sprints against a criterion measure from a tripod-mounted Laveg laser was evaluated using the LAVA laser.Abstract:
Wearable micro sensor measurement devices are a promising development in sports technology. This paper presents preliminary data evaluating the accuracy of an inertial measurement unit during 100m sprints against a criterion measure from a tripod-mounted Laveg laser. The inertial measurement units were found to be a valid tool for the analysis of peak velocity (r = 0.92) and average split velocities for splits after the first 10m (r = 0.85 - 0.95). Validation data suggests some caution should be taken in interpretation of the first lorn split (r = 0.32). Whilst data from the two devices for this split were correlated, the inertial measurement unit showed an overestimation for this parameter in comparison to the athlete velocity as measured by the laser. Further in-depth analysis should investigate this period.read more
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Journal ArticleDOI
Closing the Wearable Gap: Mobile Systems for Kinematic Signal Monitoring of the Foot and Ankle
Tony Luczak,David Saucier,Reuben F. Burch V.,John E. Ball,Harish Chander,Adam C. Knight,Pan Wei,Tashfin Iftekhar +7 more
TL;DR: In this article, the authors investigated the use of liquid metal sensors, specifically Liquid Wire sensors, as a potential solution for accurately capturing ankle complex movements such as plantar flexion, dorsiflexion, inversion, and eversion.
Journal ArticleDOI
Validity and inter-device reliability of dominant and non-dominant wrist worn activity trackers in suburban walking
TL;DR: The findings suggest that inter-device measurement from dominant and non-dominant hands is reasonably reliable, however less valid as compared to more robust research-grade devices.
Journal ArticleDOI
An adaptive filtering algorithm to estimate sprint velocity using a single inertial sensor
TL;DR: In this paper, an adaptive filtering algorithm was proposed to estimate sprint velocity using a single, sacrum-worn magneto-inertial measurement unit, which is comparable to other wearable sensor-based methods and suggests its potential use to assess sprint performance.
Proceedings ArticleDOI
Using Wavelet-based Fractal Analysis of Inertial Measurement Unit Signals to Examine Gait Data from Men and Women during a Load Carriage Task
Nizam Uddin Ahamed,Kellen T. Krajewski,Camille C. Johnson,Adam J. Sterczala,Julie P. Greeves,Sophie L. Wardle,Thomas J. O'Leary,Qi Mi,Shawn D. Flanagan,Bradley C. Nindl,Chris Connaboy +10 more
TL;DR: In this article, the authors used wavelet transform and calculated the power spectral density (PSD) of stride-to-stride fractal patterns of the gait stride interval dynamics of men and women during loaded ruck marching.
Journal ArticleDOI
Inertial measurement units are ‘all g’: Inter-trial reliability when assessing upper and lower body impact loading in artistic gymnastics:
Rhiannon A Campbell,Rhiannon A Campbell,Elizabeth J. Bradshaw,Elizabeth J. Bradshaw,Nick Ball,Adam Hunter,Wayne Spratford +6 more
TL;DR: Overall, the IMU PRA measures showed very good inter-trial reliability, however filtered signals improved reliability statistics for five variables compared to raw, and forearm- and tibia-mounted IMUs demonstrated improved reliability (very good reliability) compared to back positions.
References
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Proceedings ArticleDOI
Estimation of IMU and MARG orientation using a gradient descent algorithm
TL;DR: This paper presents a novel orientation algorithm designed to support a computationally efficient, wearable inertial human motion tracking system for rehabilitation applications, applicable to inertial measurement units (IMUs) consisting of tri-axis gyroscopes and accelerometers, and magnetic angular rate and gravity sensor arrays that also include tri- axis magnetometers.
Journal ArticleDOI
Agreement Between Methods of Measurement with Multiple Observations Per Individual
J M Bland,Douglas G. Altman +1 more
TL;DR: Methods for analysing clustered observations, both when the underlying quantity is assumed to be changing and when it is not, are described.
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Validity and reliability of GPS for measuring instantaneous velocity during acceleration, deceleration, and constant motion
TL;DR: Newer GPS may provide an acceptable tool for the measurement of constant velocity, acceleration, and deceleration during straight-line running and have sufficient sensitivity for detecting changes in performance in team sport, but researchers must account for the inherent match-to-match variation reported when using these devices.
Journal ArticleDOI
Validation of trunk mounted inertial sensors for analysing running biomechanics under field conditions, using synchronously collected foot contact data
TL;DR: A qualitative assessment of the system output indicates that the centre-of-mass acceleration provides valuable insight into the use of accelerometers for investigating the biomechanics of, in this case, middle distance runners.
Journal ArticleDOI
Inertial sensor, 3D and 2D assessment of stroke phases in freestyle swimming
James B. Lee,James B. Lee,Brendan Burkett,Brendan Burkett,David V. Thiel,Daniel Arthur James,Daniel Arthur James +6 more
TL;DR: In this paper, an inertial system was used to measure temporal kinematics of a freestyle armstroke on a swimming bench and compared with 2D video capture and a 3D infrared camera system.