• Continuous positive airway pressure in cluster headache: A randomized, placebo-controlled, triple-blind, crossover study 

      Gravdahl, Gøril Bruvik; Aakerøy, Lars; Stovner, Lars Jacob; Engstrøm, Morten; Müller, Kai Ivar; Bjørk, Marte-Helene; Tronvik, Erling Andreas (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-09)
      Background - Oxygen inhalation aborts cluster headache attacks, and case reports show the effect of continuous positive airway pressure. The aim of this study was to investigate the prophylactic effect of continuous positive airway pressure in chronic cluster headache.<p> <p>Methods - This was a randomized placebo-controlled triple-blind crossover study using active and sham continuous positive ...
    • Sleep Characteristics in Adults With and Without Chronic Musculoskeletal Pain. The Role of Mental Distress and Pain Catastrophizing 

      Abeler, Karin; Friborg, Oddgeir; Engstrøm, Morten; Sand, Trond; Bergvik, Svein (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-15)
      <p>Objectives: Sleep disturbance is associated with persistence and exacerbation of chronic pain. As this relationship seems to be bidirectional, factors underpinning sleep disturbance may prove important in multimodal rehabilitation approaches. The aim of this cross-sectional study was to examine the impact of psychological symptoms on subjective and objective sleep measures in patients with chronic ...