Arquitectura muscular y momento de fuerza: relación en el erector espinal durante extensión isométrica máxima

During a lumbar extension at 45° from the vertical, the 2 independent variables (angle of pennation and muscle thickness) obtained of the ES muscle achieved an R2 value higher than 0.8 on the linear regression analysis. This would explain the very high relationship between these and the dependent variable (torque).