• 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 ...
    • Asthma, atopy and lung function in young adults after hospitalisation for bronchiolitis in infancy: impact of virus and sex 

      Sørensen, Karen Galta; Øymar, Knut Asbjørn Alexander; Dalen, Ingvild; Halvorsen, Thomas; Mikalsen, Ingvild Bruun (Journal article; Peer reviewed, 2022)
      Background: Hospitalisation for bronchiolitis is a risk factor for asthma and impaired lung function during childhood, but outcomes in young adults are poorly described. Our primary aim was to study the prevalence of asthma ...
    • 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 ...
    • 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 (Journal article; Peer reviewed, 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 health-related quality of life and subjective health complaints in adults born extremely preterm: a longitudinal cohort study 

      Benestad, Merete; Drageset, Jorunn; Eide, Geir Egil; Vollsæter, Maria; Halvorsen, Thomas; Vederhus, Bente Johanne (Journal article; Peer reviewed, 2022)
      Purpose To study development trajectories to 34 years of age of health-related quality of life (HRQoL) and subjective health complaints in extremely preterm (EP) born subjects with and without disability, and to compare ...
    • 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 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 (Journal article; Peer reviewed, 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 (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 ...
    • 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 (Journal article; Peer reviewed, 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 ...
    • 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 ...