PDF] Validation of the Brzycki equation for the estimation of 1-RM

The results suggest that the Brzycki equation seems to be a fairly attractive alternative for the estimation of 1-RM values in the bench press from the performance of submaximal tests of 7-10-RM, in sedentary or moderately active male adults. The aim of the present study was to analyze the validation of the equation proposed by Brzycki for the prediction of a maximum repetition (1-RM) in the bench press. Fifty sedentary or moderately active male subjects (22.2 ± 3.5 years; 64.7 ± 8.6 kg), were initially submitted to six test sessions of 1-RM in the bench press, with 48 hours of interval between each session, in order to determine the maximum workload. A protocol of force resistance was then performed for the determination of 7-10-RM. The used criteria for the validation included: t-Student test for dependent samples, for comparison among the mean values obtained by the predictive equation and by the 1-RM test; Pearson correlation coefficient for analysis of the association degree among the measurements; standard error of estimate (SEE) for evaluation of the mean deviation degree of the individual data along the produced line; total error (TE) for the verification of the mean deviation of the individual values of the identity line; constant error (CE) for analysis of the difference among the mean values obtained in the 1-RM test and predicted by the proposed equation. None statistically significant difference was verified among the values produced by the 1-RM test and the Brzycki equation (P > 0.05). Both the SEE and the TE were relatively low (2.42 kg or 3.4% and 1.55 kg or 2.2%, respectively), as well as the CE found (0.22 kg or 0.3%). Moreover, the correlation coefficient value found was extremely high (r = 0.99; P < 0.05), thus showing a strong association between the values found by the 1-RM test and the Brzycki equation. Therefore, the equation analyzed by this study satisfied the validation criteria established by the literature. The results suggest that the Brzycki equation seems to be a fairly attractive alternative for the estimation of 1-RM values in the bench press from the performance of submaximal tests of 7-10-RM, in sedentary or moderately active male adults.

Short-term supervised virtual training maintains intensity of effort and represents an efficacious alternative to traditional studio-based, supervised strength training - ScienceDirect

PDF) Prediction of one repetition maximum strength (1RM) based on a submaximal strength in adult males

Nutrients, Free Full-Text

The Predictive Validity of Individualised Load–Velocity Relationships for Predicting 1RM: A Systematic Review and Individual Participant Data Meta-analysis

The Predictive Validity of Individualised Load–Velocity Relationships for Predicting 1RM: A Systematic Review and Individual Participant Data Meta-analysis

Full article: Modelling the relationship between load and repetitions to failure in resistance training: A Bayesian analysis

PDF] APPLICATION OF THE 1RM ESTIMATION FORMULAS FROM THE RM IN BENCH PRESS IN A GROUP OF PHYSICALLY ACTIVE MIDDLE-AGED WOMEN

RPE: FITSPO JARGON OR TRAINING EPIPHANY?, by Ben Scott STCfit, STCfit

Validity of one-repetition maximum predictive equations in men with spinal cord injury

PDF) Application of the 1RM estimation formulas from the RM in bench press in a group of physically active middle-aged women

The Effectiveness of Two Methods of Prescribing Load on Maximal Strength Development: A Systematic Review

Validation of the Brzycki and Epley Equations for the 1 Repetition Maximum Back Squat Test in Division I College Football Players

Frontiers “Just One More Rep!” – Ability to Predict Proximity to Task Failure in Resistance Trained Persons