• Breathing patterns in people with exercise-induced laryngeal obstruction 

      Lie, Astrid Haugen; Grønnevik, Ingvild; Frisk, Bente; Røksund, Ola Drange; Hammer, Ida; Vollsæter, Maria; Halvorsen, Thomas; Clemm, Hege Synnøve Havstad (Peer reviewed; Journal article, 2021)
      Exercise-induced laryngeal obstruction (EILO) is common, but we lack readily available diagnostic tools. The larynx represents an important point of resistance in the airways, and we therefore hypothesized that EILO is ...
    • Bronchial hyper-responsiveness after preterm birth 

      Clemm, Hege Synnøve Havstad; Engeseth, Merete Salveson; Vollsæter, Maria; Kotecha, Sailesh; Halvorsen, Thomas (Journal article; Peer reviewed, 2018)
      Being born preterm often adversely affects later lung function. Airway obstruction and bronchial hyperresponsiveness (BHR) are common findings. Respiratory symptoms in asthma and in lung disease after preterm birth might ...
    • Clinical responses following inspiratory muscle training in exercise-induced laryngeal obstruction 

      Sandnes, Astrid; Andersen, Tiina Maarit; Clemm, Hege Synnøve Havstad; Hilland, Magnus; Heimdal, John-Helge; Halvorsen, Thomas; Røksund, Ola Drange; Vollsæter, Maria (Peer reviewed; Journal article, 2021)
      Purpose Exercise-induced laryngeal obstruction (EILO) is relatively common in young people. Treatment rests on poor evidence; however, inspiratory muscle training (IMT) has been proposed a promising strategy. We aimed to ...
    • Conundrums in the breathless athlete; exercise-induced laryngeal obstruction or asthma? 

      Jansrud, Ida; Halvorsen, Thomas; Vollsæter, Maria; Hilland, Magnus; Heimdal, John-Helge; Røksund, Ola Drange; Clemm, Hege Synnøve Havstad (Peer reviewed; Journal article, 2022)
      Purpose Exercise-induced bronchoconstriction (EIB) and exercise-induced laryngeal obstruction (EILO) are the two disorders commonly considered when athletes complain of exertional dyspnea. They are highly different but ...
    • Development of lung diffusion to adulthood following extremely preterm birth 

      Satrell, Emma Elsa Carolina; Clemm, Hege Synnøve Havstad; Røksund, Ola Drange; Hufthammer, Karl Ove; Thorsen, Einar; Halvorsen, Thomas; Vollsæter, Maria (Peer reviewed; Journal article, 2021)
      Background Gas exchange in extremely preterm (EP) infants must take place in fetal lungs. Childhood lung diffusing capacity of the lung for carbon monoxide (DLCO) is reduced; however, longitudinal development has not been ...
    • Exercise induced laryngeal obstructions in humans and equines. A comparative review 

      Fretheim-Kelly, Zoe Louise; Halvorsen, Thomas; Clemm, Hege Synnøve Havstad; Roksund, Ola Drange; Heimdal, John-Helge; Vollsæter, Maria; Fintl, Constanze; Strand, Eric (Journal article; Peer reviewed, 2019)
      Dynamic obstructions of the larynx are a set of disorders that occur during exercise in equines and humans. There are a number of similarities in presentation, diagnosis, pathophysiology and treatment. Both equines and ...
    • Exercise inducible laryngeal obstruction: diagnostics and management 

      Røksund, Ola Drange; Heimdal, John-Helge; Clemm, Hege Synnøve Havstad; Vollsæter, Maria; Halvorsen, Thomas (Journal article; Peer reviewed, 2016)
      Obstruction of the central airways is an important cause of exercise-induced inspiratory symptoms (EIIS) in young and otherwise healthy individuals. This is a large, heterogeneous and vastly understudied group of patients. ...
    • Exercise related respiratory problems in the young—Is it exercise-induced bronchoconstriction or laryngeal obstruction? 

      Vollsæter, Maria; Stensrud, Trine; Maat, Robert; Halvorsen, Thomas; Røksund, Ola Drange; Sandnes, Astrid; Clemm, Hege Synnøve Havstad (Peer reviewed; Journal article, 2022)
      Complaints of breathlessness during heavy exercise is common in children and adolescents, and represent expressions of a subjective feeling that may be difficult to verify and to link with specific diagnoses through objective ...
    • Exercise-induced laryngeal obstruction in athletes treated with inspiratory muscle training 

      Sandnes, Astrid; Andersen, Tiina Maarit; Clemm, Hege Synnøve Havstad; Hilland, Magnus; Vollsæter, Maria; Heimdal, John-Helge; Eide, Geir Egil; Halvorsen, Thomas; Røksund, Ola Drange (Journal article; Peer reviewed, 2019)
      Background Exercise-induced laryngeal obstruction (EILO) is common in athletes and presents with dyspnoea, chest tightness, inspiratory stridor and sometimes panic reactions. The evidence for conservative treatment is weak, ...
    • Exercise-induced Laryngeal Obstruction: Protocol for a Randomized Controlled Treatment Trial 

      Clemm, Hege Synnøve Havstad; Røksund, Ola Drange; Andersen, Tiina Maarit; Heimdal, John-Helge; Karlsen, Tom; Hilland, Magnus; Fretheim-Kelly, Zoe; Hufthammer, Karl Ove; Sandnes, Astrid; Hjelle, Sigrun Margrethe; Vollsæter, Maria; Halvorsen, Thomas (Peer reviewed; Journal article, 2022)
      Background: Exercise-induced laryngeal obstruction (EILO) is a common cause of exertional breathing problems in young individuals, caused by paradoxical inspiratory adduction of laryngeal structures, and diagnosed by ...
    • Impaired Lung Function in Extremely Preterm-Born Adults in Their Fourth Decade of Life 

      Bårdsen, Tonje; Røksund, Ola Drange; Eagan, Tomas Mikal Lind; Hufthammer, Karl Ove; Benestad, Merete Røineland; Clemm, Hege Synnøve Havstad; Halvorsen, Thomas; Vollsæter, Maria (Peer reviewed; Journal article, 2023)
    • Laryngeal response patterns influence the efficacy of mechanical assisted cough in amyotrophic lateral sclerosis. 

      Andersen, Tiina Maarit; Sandnes, Astrid; Brekka, Anne Kristine; Hilland, Magnus; Clemm, Hege; Fondenes, Ove; Tysnes, Ole Bjørn; Heimdal, John-Helge; Halvorsen, Thomas; Vollsæter, Maria; Røksund, Ola Drange (Peer reviewed; Journal article, 2016)
    • Larynx during exercise: the unexplored bottleneck of the airways 

      Røksund, Ola Drange; Heimdal, John-Helge; Olofsson, Jan; Maat, Robert; Halvorsen, Thomas (Peer reviewed; Journal article, 2014)
    • Left Vocal Cord Paralysis After Patent Ductus Arteriosus Ligation: A Systematic Review. 

      Engeseth, Merete Salveson; Olsen, Nina Rydland; Mæland, Silje; Halvorsen, Thomas; Goode, Adam; Røksund, Ola Drange (Journal article; Peer reviewed, 2017)
      Context Extremely premature (EP) infants are at increased risk of left vocal cord paralysis (LVCP) following surgery for patent ductus arteriosus (PDA). Objective A Systematical Review was conducted to investigate the ...
    • Left vocal cord paralysis, lung function and exercise capacity in young adults born extremely preterm with a history of neonatal patent ductus arteriosus surgery—A national cohort study 

      Engan, Mette; Engeset, Merete Salveson; Sandvik, Lorentz; Gamlemshaug, Ole C.O.; Engesæter, Ingvild Øvstebø; Øymar, Knut Asbjørn Alexander; Vollsæter, Maria; Røksund, Ola Drange; Hufthammer, Karl Ove; Halvorsen, Thomas; Clemm, Hege Synnøve Havstad (Peer reviewed; Journal article, 2022)
      Background: Left vocal cord paralysis (LVCP) is a known complication of patent ductus arteriosus (PDA) surgery in extremely preterm (EP) born neonates; however, consequences of LVCP beyond the first year of life are ...
    • Lifelong exposure to air pollution and greenness in relation to asthma, rhinitis and lung function in adulthood 

      Kuiper, Ingrid Nordeide; Svanes, Cecilie; Markevych, Iana; Accordini, Simone; Bertelsen, Randi Jacobsen; Bråbäck, Lennart; Christensen, Jesper Heile; Forsberg, Bertil; Halvorsen, Thomas; Heinrich, Joachim; Hertel, Ole; Hoek, Gerard; Holm, Mathias; De Hoogh, Kees; Janson, Christer; Malinovschi, Andrei; Marcon, Alessandro; Nilsen, Roy Miodini; Sigsgaard, Torben; Johannessen, Ane (Journal article; Peer reviewed, 2021)
      Objectives To investigate if air pollution and greenness exposure from birth till adulthood affects adult asthma, rhinitis and lung function. Methods: We analysed data from 3428 participants (mean age 28) in the RHINESSA ...
    • Predicting physical activity in a national cohort of children born extremely preterm 

      Engan, Mette; Engeseth, Merete Salveson; Fevang, Silje Katrine Elgen; Vollsæter, Maria; Eide, Geir Egil; Røksund, Ola Drange; Halvorsen, Thomas; Clemm, Hege Havstad (Peer reviewed; Journal article, 2020)
      Predicting physical activity in a national cohort of children born extremely preterm. Objectives To compare physical activity among school-aged children born extremely preterm or with extremely low birthweight (EP/ELBW) ...
    • Prevalence and impact of exercise-induced laryngeal obstruction in asthma: a study protocol for a cross-sectional and longitudinal study 

      Rogde, Åse Johnsen; Lehmann, Sverre; Halvorsen, Thomas; Clemm, Hege Synnøve Havstad; Røksund, Ola Drange; Hufthammer, Karl Ove; Kvidaland, Haakon Kristian; Vollsæter, Maria; Andersen, Tiina Maarit (Peer reviewed; Journal article, 2023)
      Introduction Exercise-induced laryngeal obstruction (EILO) and exercise-induced asthma can cause troublesome respiratory symptoms that can be difficult to distinguish between. Further, there is now a growing appreciation ...
    • Reliability of maximum oxygen uptake in cardiopulmonary exercise testing with continuous laryngoscopy 

      Engan, Mette; Jansrud, Ida; Bekken, Marianne; Halvorsen, Thomas; Fretheim-Kelly, Zoe Louise; Vollsæter, Maria; Bovim, Lars Peder Vatshelle; Røksund, Ola Drange; Clemm, Hege Havstad (Journal article; Peer reviewed, 2021)
      Aims A cardiopulmonary exercise test (CPET) is the gold standard to evaluate symptom-limiting exercise intolerance, while continuous laryngoscopy performed during exercise (CLE) is required to diagnose exercise-induced ...
    • Reliability of translaryngeal airway resistance measurements during maximal exercise 

      Fretheim-Kelly, Zoe; Engan, Mette; Clemm, Hege Synnøve Havstad; Andersen, Tiina Maarit; Heimdal, John-Helge; Strand, Eric; Halvorsen, Thomas; Røksund, Ola Drange; Vollsæter, Maria (Peer reviewed; Journal article, 2022)
      Objective Exercise-induced laryngeal obstruction is an important cause of exertional dyspnoea. The diagnosis rests on visual judgement of relative changes of the laryngeal inlet during continuous laryngoscopy exercise (CLE) ...