Internal rotation profiles of the model with Ṁ = 10^-3M_⊙ yr^-1 and j_accr≃ 4 × 10¹⁸cm² s^-1 (fastest rotator of Fig. 6) for M = 5, 10, 15, 20, 25, 30 M_⊙, as a function of the Lagrangian coordinate M_r. Upper panel: profiles of the specific angular moment , and second panel: profiles of the angular velocity Ω. On the bottom panel timescales for angular momentum transport by shear diffusion and meridional circulation at M = 15M_⊙, and compare it with the PMS timescale M_ZAMS/Ṁ≃ 35 000 yr. The arrows indicate the direction of the angular momentum transport by meridional currents, outwards or inwards.