After three months of pulmonary rehabilitation (3 times a week), patients with COPD will be randomized to either an intervention group which receives an additional telecoaching program on top of the pulmonary rehabilitation, or to the usual care group, which only receives rehabilitation program. Apart from the added telecoaching program to the intervention group, the rehabilitation program will be identical and last for another three months (2 times a week). After discharge, both groups will be followed up for six months.