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. 2021 Mar 16;9(3):39. doi: 10.3390/sports9030039

Table 3.

Correlations (Pearson’s r) and mean average errors (MAE: mean ± SD) between actual one-repetition maximum data (1RM) and estimated 1RM data for the eccentric–concentric (Ecc-Conc) and concentric-only (Conc-only) bench-press with five different methods (Ind—individual MVT based estimation, Grp—group average MVT based estimation, OLS—ordinary least squares regression, LASSO—least absolute shrinkage and selection operator regression, ANN—artificial neural network).

Type Estimated 1RM
Ind MVT Grp MVT OLS LASSO ANN
Ecc-Conc r 0.970 0.971 0.979 0.979 0.980
MAE 3.4 ± 4.4 3.4 ± 4.4 2.8 ± 3.7 2.8 ± 3.7 2.9 ± 3.8
Conc-only r 0.987 0.988 0.988 0.988 0.987
MAE 2.9 ± 3.6 3.1 ± 3.7 2.7 ± 3.5 2.7 ± 3.5 3.1 ± 3.8

MVT—minimum velocity threshold (i.e., velocity at 1RM).