The comparison between parameterisations of the perturbation results for the decay width of the Standard Model Higgs boson to bar{b}b-quarks pairs, based on application of bar{MS}-scheme running quark mass and pole b-quark mass, are presented. In the
case of the latter parameterisation taking into account of order O(alpha_s^3) term is rather important. It is minimising deviations of the results obtained at the O(alpha_s^2) level from the results, which follow from the running quark mass approach
