The COMPASS results on longitudinal spin effects and future measurements

A short review of the COMPASS results obtained in inelastic polarized muon scattering off the longitudinally polarized proton and deuteron targets is given. The measured gluon polarization inside the nucleon is presented including the final value of ΔG/G from the open charm LO analysis. New results on A1p and the Bjorken Sum Rule test are shown. Finally the plans and goals of the future COMPASS measurements are presented.