Towards a better understanding of physical activity in people with COPD: predicting physical activity after pulmonary rehabilitation using an integrative competence model - Carl, Johannes Alexander; Geidl, Wolfgang; Schuler, Michael; Mino, Eriselda; Lehbert, Nicola; Wittmann, Michael; Schultz, Konrad; Pfeifer, Klaus (Friedrich-Alexander-Universität Erlangen-Nürnberg, 2021)