Title: Galaxy properties in the infall region of groups of galaxies Abstract: We study the effects of the environment upon galaxies falling into massive groups. We use groups of galaxies identified in the SDSS-DR7 to detect the filamentary structures that connect massive groups. We classify infalling galaxies according to whether (i) they are reaching groups along filamentary structures, or (ii) they are falling isotropically. We study the impact of the different environments on several galaxy properties: specific star formation rate, age, colour and luminosity. Authors: H.J. Martinez, H. Muriel & V. Coenda