<abstract xmlns="http://www.w3.org/1999/xhtml">

To control and monitor strength training with a barbell various systems are on the consumer market. They provide the user with information regarding velocity, acceleration and trajectory of the barbell. Some systems additionally calculate the 1-repetition-maximum (1RM) of exercises and use it to suggest individual intensities for future training. Three systems were tested: GymAware, PUSH Band 2.0 and Vmaxpro. The GymAware system bases on linear position transducers, PUSH Band 2.0 and Vmaxpro base on inertial measurement units. The aim of this paper was to determine the accuracy of the three systems with regard to the determination of the average velocity of each repetition of three barbell strength exercises (squat, barbell rowing, deadlift). The velocity data of the three systems were compared to a Vicon system using linear regression analyses and Bland-Altman-diagrams.
In the linear regression analyses the smallest coefficient of determination (R2.) in each exercise can be observed for PUSH Band 2.0. In the Bland-Altman diagrams the mean value of the differences in the average velocities is near zero for all systems and all exercises. PUSH Band 2.0 has the largest differences between the Limits of Agreement. For GymAware and Vmaxpro these differences are comparable.
</abstract>

To control and monitor strength training with a barbell various systems are on the consumer market. They provide the user with information regarding velocity, acceleration and trajectory of the barbell. Some systems additionally calculate the 1-repetition-maximum (1RM) of exercises and use it to suggest individual intensities for future training. Three systems were tested: GymAware, PUSH Band 2.0 and Vmaxpro. The GymAware system bases on linear position transducers, PUSH Band 2.0 and Vmaxpro base on inertial measurement units. The aim of this paper was to determine the accuracy of the three systems with regard to the determination of the average velocity of each repetition of three barbell strength exercises (squat, barbell rowing, deadlift). The velocity data of the three systems were compared to a Vicon system using linear regression analyses and Bland-Altman-diagrams.
In the linear regression analyses the smallest coefficient of determination (R2.) in each exercise can be observed for PUSH Band 2.0. In the Bland-Altman diagrams the mean value of the differences in the average velocities is near zero for all systems and all exercises. PUSH Band 2.0 has the largest differences between the Limits of Agreement. For GymAware and Vmaxpro these differences are comparable.

Validation of Velocity Measuring Devices in Velocity Based Strength Training

International Journal of Computer Science in Sport

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Validation of Velocity Measuring Devices in Velocity Based Strength Training"}

To control and monitor strength training with a barbell various systems are on the consumer market. They provide the user with information regarding velocity,...

Validation of Velocity Measuring Devices in Velocity Based Strength Training

Online veröffentlicht: 25. Sept. 2021

Seitenbereich: 106 - 118

DOI: https://doi.org/10.2478/ijcss-2021-0007

Schlüsselwörter
VELOCITY BASED TOOLS, VICON, PUSH, GYMAWARE, VMAXPRO

© 2021 Thorben Menrad et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Validation of Velocity Measuring Devices in Velocity Based Strength Training

Online veröffentlicht: 25. Sept. 2021

Seitenbereich: 106 - 118

DOI: https://doi.org/10.2478/ijcss-2021-0007

SchlüsselwörterVELOCITY BASED TOOLS, VICON, PUSH, GYMAWARE, VMAXPRO

© 2021 Thorben Menrad et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Schlüsselwörter
VELOCITY BASED TOOLS, VICON, PUSH, GYMAWARE, VMAXPRO