Top panel: evolution of the total angular momentum loss as a function of the rotation rate. The long-dashed curve is the angular momentum loss when the mass loss is supposed isotropic and spherically symmetric (, case 1). The solid curve is the angular momentum loss when the deformation of the star is accounted for, but the mass loss is assumed to be isotropic (, case 2). The dotted curve is the angular momentum loss when both the deformation and the anisotropy of the winds are accounted for (, case 3) (see text for more details). Bottom panel: as a function of ω.