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Agreement between the Open Barbell and Tendo Linear Position Transducers for Monitoring Barbell Velocity during Resistance Exercise

To determine the agreement between the Open Barbell (OB) and Tendo weightlifting analyzer (TWA) for measuring barbell velocity, eleven men (19.4 ± 1.0 y) performed one set of 2–3 repetitions at four sub-maximal percentage loads, [i.e., 30, 50, 70, and 90% one-repetition maximum (1RM)] in the back (B...

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Autores principales: Gonzalez, Adam M., Mangine, Gerald T., Spitz, Robert W., Ghigiarelli, Jamie J., Sell, Katie M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6572172/
https://www.ncbi.nlm.nih.gov/pubmed/31126039
http://dx.doi.org/10.3390/sports7050125
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author Gonzalez, Adam M.
Mangine, Gerald T.
Spitz, Robert W.
Ghigiarelli, Jamie J.
Sell, Katie M.
author_facet Gonzalez, Adam M.
Mangine, Gerald T.
Spitz, Robert W.
Ghigiarelli, Jamie J.
Sell, Katie M.
author_sort Gonzalez, Adam M.
collection PubMed
description To determine the agreement between the Open Barbell (OB) and Tendo weightlifting analyzer (TWA) for measuring barbell velocity, eleven men (19.4 ± 1.0 y) performed one set of 2–3 repetitions at four sub-maximal percentage loads, [i.e., 30, 50, 70, and 90% one-repetition maximum (1RM)] in the back (BS) and front squat (FS) exercises. During each repetition, peak and mean barbell velocity were recorded by OB and TWA devices, and the average of the 2–3 repetitions was used for analyses. Although the repeated measures analysis of variance revealed significantly (p ≤ 0.005) greater peak and mean velocity scores from OB across all intensities, high intraclass correlation coefficients (ICC(2,K) = 0.790–0.998), low standard error of measurement (SEM(2,K) = 0.040–0.119 m·s(−1)), and coefficients of variation (CV = 2–4%) suggested consistency between devices. Positive (r = 0.491–0.949) Pearson correlations between averages and differences (between devices) in peak velocity, as well as associated Bland-Altman plots, showed greater differences occurred as the velocity increased, particularly at low-moderate intensity loads. OB consistently provides greater barbell velocity scores compared to TWA, and the differences between devices were more apparent as the peak velocity increased with low-to-moderate loads. Strength coaches and athletes may find better agreement between devices if the mean velocity scores are only considered.
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spelling pubmed-65721722019-06-18 Agreement between the Open Barbell and Tendo Linear Position Transducers for Monitoring Barbell Velocity during Resistance Exercise Gonzalez, Adam M. Mangine, Gerald T. Spitz, Robert W. Ghigiarelli, Jamie J. Sell, Katie M. Sports (Basel) Article To determine the agreement between the Open Barbell (OB) and Tendo weightlifting analyzer (TWA) for measuring barbell velocity, eleven men (19.4 ± 1.0 y) performed one set of 2–3 repetitions at four sub-maximal percentage loads, [i.e., 30, 50, 70, and 90% one-repetition maximum (1RM)] in the back (BS) and front squat (FS) exercises. During each repetition, peak and mean barbell velocity were recorded by OB and TWA devices, and the average of the 2–3 repetitions was used for analyses. Although the repeated measures analysis of variance revealed significantly (p ≤ 0.005) greater peak and mean velocity scores from OB across all intensities, high intraclass correlation coefficients (ICC(2,K) = 0.790–0.998), low standard error of measurement (SEM(2,K) = 0.040–0.119 m·s(−1)), and coefficients of variation (CV = 2–4%) suggested consistency between devices. Positive (r = 0.491–0.949) Pearson correlations between averages and differences (between devices) in peak velocity, as well as associated Bland-Altman plots, showed greater differences occurred as the velocity increased, particularly at low-moderate intensity loads. OB consistently provides greater barbell velocity scores compared to TWA, and the differences between devices were more apparent as the peak velocity increased with low-to-moderate loads. Strength coaches and athletes may find better agreement between devices if the mean velocity scores are only considered. MDPI 2019-05-23 /pmc/articles/PMC6572172/ /pubmed/31126039 http://dx.doi.org/10.3390/sports7050125 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gonzalez, Adam M.
Mangine, Gerald T.
Spitz, Robert W.
Ghigiarelli, Jamie J.
Sell, Katie M.
Agreement between the Open Barbell and Tendo Linear Position Transducers for Monitoring Barbell Velocity during Resistance Exercise
title Agreement between the Open Barbell and Tendo Linear Position Transducers for Monitoring Barbell Velocity during Resistance Exercise
title_full Agreement between the Open Barbell and Tendo Linear Position Transducers for Monitoring Barbell Velocity during Resistance Exercise
title_fullStr Agreement between the Open Barbell and Tendo Linear Position Transducers for Monitoring Barbell Velocity during Resistance Exercise
title_full_unstemmed Agreement between the Open Barbell and Tendo Linear Position Transducers for Monitoring Barbell Velocity during Resistance Exercise
title_short Agreement between the Open Barbell and Tendo Linear Position Transducers for Monitoring Barbell Velocity during Resistance Exercise
title_sort agreement between the open barbell and tendo linear position transducers for monitoring barbell velocity during resistance exercise
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6572172/
https://www.ncbi.nlm.nih.gov/pubmed/31126039
http://dx.doi.org/10.3390/sports7050125
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