Frykholm, E., Klijn, P., Saey, D., van Hees, H. W. H., Stål, P., Sandström, T., . . . Nyberg, A. (2019). Effect and feasibility of non-linear periodized resistance training in people with COPD: Study protocol for a randomized controlled trial. Trials.

Frykholm, Erik, Peter Klijn, Didier Saey, Hieronymus W. H. van Hees, Per Stål, Thomas Sandström, Ann Sörlin, François Maltais, och André Nyberg. "Effect and Feasibility of Non-linear Periodized Resistance Training in People With COPD: Study Protocol for a Randomized Controlled Trial." Trials 2019.

Frykholm, Erik, et al. "Effect and Feasibility of Non-linear Periodized Resistance Training in People With COPD: Study Protocol for a Randomized Controlled Trial." Trials 2019.