The impact of exercise training on fatigue in patients with chronic obstructive pulmonary disease: a systematic review and meta-analysis Mara Paneroni, Michele Vitacca, Massimo Venturelli, Carla Simonelli, Laura Bertacchini, Simonetta Scalvini, Federico Schena, Nicolino Ambrosino

High altitudes and partial pressure of arterial oxygen in patients with chronic obstructive pulmonary disease - A systematic review and meta-analysis A. Sevik, T. Gaisl, A. Forrer, L. Graf, S. Ulrich, K.E. Bloch, M. Lichtblau, M. Furian

Unsupervised physical activity interventions for people with COPD: A systematic review and meta-analysis C. Paixão, V. Rocha, D. Brooks, A. Marques