Accuracy and reproducibility of a novel device for monitoring resistance training performed at self-selected movement velocity
Article
Külkamp, W., Kons, R., de Souza, J., Kunzler, D.H. and Bishop, C. 2024. Accuracy and reproducibility of a novel device for monitoring resistance training performed at self-selected movement velocity. Sports Engineering. 27 (1). https://doi.org/10.1007/s12283-024-00450-y
Type | Article |
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Title | Accuracy and reproducibility of a novel device for monitoring resistance training performed at self-selected movement velocity |
Authors | Külkamp, W., Kons, R., de Souza, J., Kunzler, D.H. and Bishop, C. |
Abstract | Resistance training does not necessarily require repetition failure, whereas Velocity-Based training and “training not to failure” are available alternatives to know the optimal point to interrupt the sets. Nevertheless, Velocity-Based training require exclusively maximal intended velocities and training not to failure currently relies on subjectivity to estimate repetitions in reserve. This study evaluated the accuracy and precision of a linear encoder in estimating the maximum number of repetitions during sets performed until failure at self-selected movement velocity. Fifty-seven males were evaluated in three resistance exercises: close-grip lat pulldown, knee extension, and bench press. Accuracy was evaluated by comparing the mean and median of actual and estimated repetitions using t-tests and Wilcoxon signed-rank tests, respectively. Additionally, the fatigue effect in consecutive sets was analyzed using two-way ANOVA for repeated measures. Levels of agreement were assessed through Bland-Altman analysis, and reproducibility was determined by calculating the Intraclass Correlation Coefficient (ICC). The results showed no significant difference between actual and estimated repetitions (t178 = 0.307; p > 0.05; ES = 0.02; Z = -0.45; p > 0.05; ES = -0.02), even in the presence of fatigue between consecutive sets. The reproducibility for estimating maximal repetitions was good (ICC3,2 = 0.88 [95% CI = 0.83-0.91], F177,177 = 8.07, p < 0.001), with an acceptable degree of agreement. Errors of less than or equal to two repetitions occurred in over 90% of the series for the close-grip lat pulldown and bench press, with knee extension exhibiting a slightly lower frequency. Hence, practitioners and trainers should consider using this linear encoder for the evaluated exercises, especially when failure is not desired under self-selected velocity conditions. |
Keywords | Velocity-based training; Resistance training; Movement velocity; Ecological validity; Repetitions; Strength training |
Sustainable Development Goals | 3 Good health and well-being |
Middlesex University Theme | Health & Wellbeing |
Publisher | Springer |
Journal | Sports Engineering |
ISSN | 1369-7072 |
Electronic | 1460-2687 |
Publication dates | |
Online | 21 Feb 2024 |
Jun 2024 | |
Publication process dates | |
Accepted | 08 Jan 2024 |
Deposited | 10 Jan 2024 |
Output status | Published |
Accepted author manuscript | File Access Level Open |
Copyright Statement | This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use (https://www.springernature.com/gp/open-research/policies/accepted-ma...), but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s12283-024-00450-y |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s12283-024-00450-y |
Web of Science identifier | WOS:001168314000001 |
Language | English |
https://repository.mdx.ac.uk/item/y796v
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