  The effective potential for the Wilson loop in the SU(2) gauge theory with
N_f massive fundamental and N_a massive adjoint fermions on S^1 x M^4 is
computed at the one-loop level, assuming periodic boundary conditions for the
gauge field and general boundary conditions for fermions. It is shown that
there are critical values for the bare mass, and the boundary condition
parameter for the adjoint fermions, beyond which the symmetry pattern changes.
However, neither bare mass, nor the boundary condition parameter for the
fundamental fermion play any role on the vacuum structure, thus the symmetry
breaking pattern. When the two different types of fermions with equal masses
exist together the pattern of the fundamental fermion dominate, and SU(2) gauge
symmetry remains intact independent of the fermion masses.
