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Prediction of the Maximum Number of Repetitions and Repetitions in Reserve From Barbell Velocity.

Abstract：

PURPOSE:To provide 2 general equations to estimate the maximum possible number of repetitions (XRM) from the mean velocity (MV) of the barbell and the MV associated with a given number of repetitions in reserve, as well as to determine the between-sessions reliability of the MV associated with each XRM. METHODS:After determination of the bench-press 1-repetition maximum (1RM; 1.15 ± 0.21 kg/kg body mass), 21 men (age 23.0 ± 2.7 y, body mass 72.7 ± 8.3 kg, body height 1.77 ± 0.07 m) completed 4 sets of as many repetitions as possible against relative loads of 60%1RM, 70%1RM, 80%1RM, and 90%1RM over 2 separate sessions. The different loads were tested in a randomized order with 10 min of rest between them. All repetitions were performed at the maximum intended velocity. RESULTS:Both the general equation to predict the XRM from the fastest MV of the set (CV = 15.8-18.5%) and the general equation to predict MV associated with a given number of repetitions in reserve (CV = 14.6-28.8%) failed to provide data with acceptable between-subjects variability. However, a strong relationship (median r2 = .984) and acceptable reliability (CV < 10% and ICC > .85) were observed between the fastest MV of the set and the XRM when considering individual data. CONCLUSIONS:These results indicate that generalized group equations are not acceptable methods for estimating the XRM-MV relationship or the number of repetitions in reserve. When attempting to estimate the XRM-MV relationship, one must use individualized relationships to objectively estimate the exact number of repetitions that can be performed in a training set.

journal_name

Int J Sports Physiol Perform

journal_title

International journal of sports physiology and performance

authors

García-Ramos A,Torrejón A,Feriche B,Morales-Artacho AJ,Pérez-Castilla A,Padial P,Haff GG

doi

10.1123/ijspp.2017-0302

subject

Has Abstract

pub_date

2018-03-01 00:00:00

pages

353-359

issue

3

eissn

1555-0265

issn

1555-0273

journal_volume

13

pub_type

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