• Associations of preconception exposure to air pollution and greenness with offspring asthma and hay fever 

      Kuiper, Ingrid Nordeide; 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, Anderi; Marcon, Alessandro; Sigsgaard, Torben; Svanes, Cecilie; Johannessen, Ane (Journal article; Peer reviewed, 2020)
      We investigated if greenness and air pollution exposure in parents’ childhood affect offspring asthma and hay fever, and if effects were mediated through parental asthma, pregnancy greenness/pollution exposure, and offspring ...
    • 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 (Journal article; Peer reviewed, 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 (Peer reviewed; Journal article, 2018-03)
      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 ...
    • Bruk av BOPPS-modellen i undervisning av medisin-studenter 

      Rørtveit, Guri; Halvorsen, Thomas (UPED-skrift, Working paper, 2015)
    • Children born preterm at the turn of the millennium had better lung function than children born similarly preterm in the early 1990s. 

      Vollsæter, Maria; Skromme, Kaia; Satrell, Emma; Clemm, Hege; Røksund, Ola; Øymar, Knut; Markestad, Trond; Halvorsen, Thomas (Peer reviewed; Journal article, 2015-12-07)
      Objective. Compare respiratory health in children born extremely preterm (EP) or with extremely low birthweight (ELBW) nearly one decade apart, hypothesizing that better perinatal management has led to better outcome. ...
    • 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 (Journal article; Peer reviewed, 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 ...
    • Comparison of physical activity and body composition in a cohort of children born extremely preterm or with extremely low birth weight to matched term-born controls: a follow-up study 

      Engan, Mette; Vollsæter, Maria; Øymar, Knut; Markestad, Trond; Eide, Geir Egil; Halvorsen, Thomas; Juliusson, Petur Benedikt; Clemm, Hege Synnøve Havstad (Peer reviewed; Journal article, 2019)
      Objectives: To compare physical activity and body composition in a cohort of children born extremely preterm/extremely low birth weight (EP/ELBW) with term-born (TB) controls. Methods: A regional cohort of children ...
    • Early life growth and associations with lung function and bronchial hyperresponsiveness at 11-years of age 

      Mikalsen, Ingvild Bruun; Halvorsen, Thomas; Juliusson, Pétur Benedikt; Magnus, Maria Christine; Nystad, Wenche; Stensrud, Trine; Størdal, Ketil; Vollsæter, Maria; Øymar, Knut Asbjørn Alexander (Journal article; Peer reviewed, 2021)
      Low birthweight and being born small-for-gestational age (SGA) are linked to asthma and impaired lung function. Particularly, poor intrauterine growth followed by rapid catch-up growth during childhood may predispose for ...
    • 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 (Peer reviewed; Journal article, 2019-10-30)
      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 (Peer reviewed; Journal article, 2017-01)
      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-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 (Peer reviewed; Journal article, 2019-01-18)
      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: natural history and effect of surgical treatment 

      Maat, Robert Christiaan; Hilland, Magnus; Røksund, Ola Drange; Halvorsen, Thomas; Olofsson, Jan; Aarstad, Hans Jørgen; Heimdal, John-Helge (Peer reviewed; Journal article, 2011-06-05)
      The current follow-up study concerning the supraglottic type of exercise-induced laryngeal obstruction (EILO) was performed to reveal the natural history of supraglottic EILO and compare the symptoms, as well as the laryngeal ...
    • Exhaled nitric oxide is related to atopy, but not asthma in adolescents with bronchiolitis in infancy 

      Mikalsen, Ingvild Bruun; Halvorsen, Thomas; Øymar, Knut (Peer reviewed; Journal article, 2013-11-17)
      Background: The fraction of exhaled nitric oxide (FeNO) has been suggested as a non-invasive marker of eosinophilic inflammation in asthma, but lately rather as a biomarker of atopy than of asthma itself. Asthma after ...
    • Feasibility and tolerability of measuring translaryngeal pressure during exercise 

      Kelly, Zoe Louise; Halvorsen, Thomas; Heimdal, John-Helge; Strand, Eric; Vollsæter, Maria; Clemm, Hege Synnøve Havstad; Røksund, Ola Drange (Peer reviewed; Journal article, 2019)
      Objectives/Hypothesis: To determine if simultaneous tracheal and supraglottic pressure measurement performed during a continuous laryngoscopy exercise (CLE) test is possible, tolerable, and feasible, and if so, whether ...
    • Health related quality of life after extremely preterm birth: a matched controlled cohort study 

      Vederhus, Bente Johanne; Markestad, Trond; Eide, Geir Egil; Graue, Marit; Halvorsen, Thomas (Peer reviewed; Journal article, 2010-05-23)
      Background: The majority of infants born before the last trimester now grow up. However, knowledge on subsequent health related quality of life (HRQoL) is scarce. We therefore aimed to compare HRQoL in children born extremely ...
    • Health-related quality of life and emotional and behavioral difficulties after extreme preterm birth: developmental trajectories 

      Vederhus, Bente Johanne; Eide, Geir Egil; Natvig, Gerd Karin; Markestad, Trond; Graue, Marit; Halvorsen, Thomas (Peer reviewed; Journal article, 2015-01-20)
      Background: Knowledge of long-term health related outcomes in contemporary populations born extremely preterm (EP) is scarce.We aimed to explore developmental trajectories of health-related quality of life (HRQoL) and ...
    • 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, 2017)
      Background: Most patients with amyotrophic lateral sclerosis (ALS) are treated with mechanical insufflation–exsufflation (MI-E) in order to improve cough. This method often fails in ALS with bulbar involvement, allegedly ...
    • 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, 2014-07-18)
      Exercise-induced shortness of breath is not uncommon in otherwise healthy young people. Based on the presenting symptoms alone, it is challenging to distinguish exercise-induced asthma (EIA) from exercise-induced obstruction ...
    • 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 (Peer reviewed; Journal article, 2018)
      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 (Journal article; Peer reviewed, 2022-01-03)
      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 ...