Effects of Exercise and Sleep on Motor Learning and Functional Abilities in Multiple Sclerosis

The ExSiMS-project consists of both a proof-of-concept study and a longitudinal study. In both studies, participants will perform a visuomotor accuracy tracking task (VATT) with their dominant hand on the main experimental days. The participants will wear EEG and EMG electrodes during the VATT. This will make it possible to investigate cortical activity during skill acquisition and later analyse the corticomuscular coherence. After the VATT, the participants will be randomized to either 20 min aerobic exercise on an ergometer bike, a short 30-minute nap or control (sitting rest). The interventions will run over a longer period of time in the longitudinal study. The participants will be asked to do a retention test of the visuomotor accuracy tracking task 24 hours later. The studies will run over more experiment days divided into two experiment blocks of at least two experiment days separated by between two weeks to three months. Methods: * Electroencephalography (EEG) and Electromyography (EMG) * Actigraphy/Accelerometry * Visuomotor Accuracy Tracking Task (VATT) * Training on an Ergometerbike: Graded Exercise Test (GXT), High Intensity Interval Training (HIIT) * Polysomnography (PSG)