Laza-Cagigas, Roberto, Goss-Sampson, Mark ORCID: 0000-0002-2662-559X , Larumbe-Zabala, Eneko, Termkolli, Leke and Naclerio, Fernando ORCID: 0000-0001-7405-4894 (2018) Validity and reliability of a novel optoelectronic device to measure movement velocity, force and power during the back squat exercise. Journal of Sports Sciences, 37 (7). pp. 795-802. ISSN 0264-0414 (Print), 1466-447X (Online) (doi:https://doi.org/10.1080/02640414.2018.1527673)

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Abstract

This study analysed the validity and reliability of a new optoelectronic device (Velowin) for the measurement of vertical displacement and velocity as well as to estimate force and mechanical power. Eleven trained males with Mean (SD) age = 27.4 (4.8) years, completed an incremental squat exercise test with 5 different loads (<30 – 90% of their 1−repetition maximum) while displacement and vertical velocity of the barbell were simultaneously measured using an integrated 3D system (3D motion capture system + force platform) and Velowin. Substantial to almost perfect correlation (concordance correlation coefficient = 0.75 – 0.96), root mean square error as coefficient of variation ±90% confidence interval  10% and good to excellent intraclass correlation coefficient = 0.84 – 0.99 were determined for all the variables. Passing and Bablock regression methods revealed no differences for average velocity. However, significant but consistent bias were determined for average or peak force and power while systematic and not proportional bias was found for displacement. In conclusion, Velowin, holds some potential advantages over traditionally used accelerometer or linear transducers, represents a valid and reliable alternative to monitor vertical displacement and velocity as well as to estimate average force and mechanical power during the squat exercise.

Item Type:	Article
Uncontrolled Keywords:	Resistance training; 3­D motion captures systems; force plate; accelerometers; linear transducers.
Subjects:	Q Science > QP Physiology
Faculty / School / Research Centre / Research Group:	Faculty of Education, Health & Human Sciences Faculty of Engineering & Science Faculty of Education, Health & Human Sciences > School of Human Sciences (HUM) Faculty of Education, Health & Human Sciences > Institute for Lifecourse Development > Centre for Exercise Activity and Rehabilitation
Last Modified:	22 Nov 2021 11:49
URI:	http://gala.gre.ac.uk/id/eprint/21535

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