Bench press 1-repetition maximum estimation through the individualized load-velocity relationship : Comparison of different regression models and minimal velocity thresholds
Journal article
Janicijevic, Danica, Jukic, Ivan, Weakley, Jonathon and García-Ramos, Amador. (2021). Bench press 1-repetition maximum estimation through the individualized load-velocity relationship : Comparison of different regression models and minimal velocity thresholds. International Journal of Sports Physiology and Performance. 16(8), pp. 1074-1081. https://doi.org/10.1123/IJSPP.2020-0312
Authors | Janicijevic, Danica, Jukic, Ivan, Weakley, Jonathon and García-Ramos, Amador |
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Abstract | Purpose: To compare the accuracy of nine 1-repetition maximum (1RM) prediction methods during the paused and touch-and-go bench press exercises performed in a Smith machine. Method: A total of 86 men performed 2 identical sessions (incremental loading test until reaching the 1RM followed by a set to failure) in a randomized order during the paused and touch-and-go bench press exercises. Individualized load–velocity relationships were modeled by linear and polynomial regression models considering 4 loads (45%–60%–75%–90% of 1RM) (multiple-point methods) and considering only 2 loads (45%–90% of 1RM) by a linear regression (2-point method). Three minimal velocity thresholds were used: the general velocity of 0.17 m·s−1 (general velocity of the 1RM [V1RM]), the velocity obtained when lifting the 1RM load (individual V1RM), and the velocity obtained during the last repetition of a set to failure. Results: The 1RM prediction methods were generally valid (range: r = .96–.99, standard error of the estimate = 2.8–4.9 kg or 4.6%–8.0% of 1RM). The multiple-point linear method (2.79 [2.29] kg) was more precise than the multiple-point polynomial method (3.54 [3.31] kg; P = .013), but no significant differences were observed when compared with the 2-point method (3.09 [2.66] kg, P = .136). The velocity of the last repetition of a set to failure (3.47 [2.97] kg) was significantly less precise than the individual V1RM (2.91 [2.75] kg, P = .009) and general V1RM (3.00 [2.65] kg, P = .010). Conclusions: Linear regression models and a general minimal velocity threshold of 0.17 m·s−1 should be recommended to obtain a quick and precise estimation of the 1RM during the bench press exercise performed in a Smith machine. |
Keywords | linear position transducer; maximum dynamic strength; multiple-point method; 2-point method; based training |
Year | 2021 |
Journal | International Journal of Sports Physiology and Performance |
Journal citation | 16 (8), pp. 1074-1081 |
Publisher | Human Kinetics Publishers Inc. |
ISSN | 1555-0265 |
Digital Object Identifier (DOI) | https://doi.org/10.1123/IJSPP.2020-0312 |
Scopus EID | 2-s2.0-85110150411 |
Research or scholarly | Research |
Page range | 1074-1081 |
Publisher's version | License All rights reserved File Access Level Controlled |
Output status | Published |
Publication dates | |
Online | 25 Mar 2021 |
Publication process dates | |
Deposited | 11 Nov 2021 |
https://acuresearchbank.acu.edu.au/item/8x092/bench-press-1-repetition-maximum-estimation-through-the-individualized-load-velocity-relationship-comparison-of-different-regression-models-and-minimal-velocity-thresholds
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