  We present an effective Lagrangian parameterization describing scalar,
vector, and axial-vector bound states, originating from a strong breaking of
the electroweak symmetry, based on the global symmetry $SU(N)_L\otimes
SU(N)_R$. In this approach vector and axial-vector bound states are gauge
bosons associated to a hidden $SU(N)_L\otimes SU(N)_R$ symmetry. After the
gauging of the electroweak symmetry, the corrections to the self-energies of
the standard model gauge bosons are calculated and bounds on the parameter
space of the model arising from precision measurements are studied. The
self-energy corrections arise from spin 1 mixings, pseudogoldstones loops,
pseudogoldstone-spin 1 loops, and tadpole terms. The one-loop terms tend to
decrease both isospin conserving and isospin violating corrections. Careful
calculation for standard $SU(8)$ QCD-scaled technicolor shows that strictly
this model (which has however serious theoretical difficulties on his own) is
still marginally allowed at present experimental precision.
