Number of repetitions performed before and after reaching velocity loss thresholds : First repetition versus fastest repetition-mean velocity versus peak velocity

Journal article


García-Ramos, Amador, Weakley, Jonathon, Janicijevic, Danica and Jukic, Ivan. (2021). Number of repetitions performed before and after reaching velocity loss thresholds : First repetition versus fastest repetition-mean velocity versus peak velocity. International Journal of Sports Physiology and Performance. 16(7), pp. 950-957. https://doi.org/10.1123/ijspp.2020-0629
AuthorsGarcía-Ramos, Amador, Weakley, Jonathon, Janicijevic, Danica and Jukic, Ivan
Abstract

Purpose: To explore the effect of several methodological factors on the number of repetitions performed before and after reaching certain velocity loss thresholds (VLTs). Method: Fifteen resistance-trained men (bench press 1-repetition maximum = 1.25 [0.16] kg·kg−1) performed with maximum intent a total of 182 sets (77 short sets [≤12 repetitions] and 105 long sets [>12 repetitions]) leading to failure during the Smith machine bench press exercise. Fifteen percent, 30%, and 45% VLTs were calculated, considering 2 reference repetitions (first and fastest repetitions) and 2 velocity variables (mean velocity [MV] and peak velocity [PV]). Results: The number of repetitions performed before reaching all VLTs were affected by the reference repetition and velocity variable (P ≤ .001). The fastest MV and PV during the short sets (75.3%) and PV during the long sets (72.4%) were predominantly observed during the first repetition, while the fastest MV during long sets was almost equally distributed between the first (37.1%) and second repetition (40.0%). Failure occurred before reaching the VLTs more frequently using PV (4, 8, and 33 occasions for 15%, 30%, and 45% VLTs, respectively) than MV (only 1 occasion for the 45% VLT). The participants rarely produced a velocity output above a VLT once this threshold was exceeded for the first time (≈10% and 30% of occasions during the short and long sets, respectively). Conclusions: The reference repetition and velocity variable are important factors to consider when implementing VLTs during resistance training. The fastest repetition (instead of the first repetition) and MV (instead of PV) are recommended.

Keywordsbench press; fatigue; training prescription; velocity-based training
Year2021
JournalInternational Journal of Sports Physiology and Performance
Journal citation16 (7), pp. 950-957
PublisherHuman Kinetics Publishers
ISSN1555-0273
Digital Object Identifier (DOI)https://doi.org/10.1123/ijspp.2020-0629
PubMed ID33691279
Scopus EID2-s2.0-85112133268
Research or scholarlyResearch
Page range950-957
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All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Online10 Mar 2021
Publication process dates
Deposited20 Dec 2021
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