• The ambiguity of physical activity, exercise and atrial fibrillation 

      Morseth, Bente; Løchen, Maja-Lisa; Ariansen, Inger Kristine Holtermann; Myrstad, Marius; Thelle, Dag Steinar (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-07)
      Although commonly associated with cardiovascular disease or other medical conditions, atrial fibrillation may also occur in individuals without any known underlying conditions. This manifestation of atrial fibrillation has been linked to extensive and long-term exercise, as prolonged endurance exercise has shown to increase prevalence and risk of atrial fibrillation. In contrast, more modest physical ...
    • Atrial fibrillation in female endurance athletes 

      Myrstad, Marius; Johansen, Kristoffer Robin; Sørensen, Eivind; Løchen, Maja-Lisa; Hylen Ranhoff, Anette; Morseth, Bente (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-21)
    • Increased risk of atrial fibrillation among elderly Norwegian men with a history of long-term endurance sport practice 

      Myrstad, Marius; Løchen, Maja-Lisa; Graff-Iversen, Sidsel; Gulsvik, Anne Kristine; Thelle, Dag Steinar; Stigum, Hein; Ranhoff, Anette Hylen (Journal article; Tidsskriftartikkel; Peer reviewed, 2013-11-21)
      Atrial fibrillation (AF) is the most common cardiac arrhythmia. The prevalence increases with increasing age. In middle-aged men, endurance sport practice is associated with increased risk of AF but there are few studies among elderly people. The aim of this study was to investigate the role of long-term endurance sport practice as a risk factor for AF in elderly men. A crosssectional study ...
    • Lower bone mineral density in older female endurance skiers – a cross-sectional, observational study 

      Gulsvik, Anne Kristine; Myrstad, Marius; Landgraff, Ida Wilson; Emaus, Nina; Ranhoff, Anette Hylen (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-17)
      <p><i>Background</i>: Physical activity (PA) is generally beneficial for bone health, but the effect of high levels of PA over many years, in older women, is unknown.</p> <p><i>Methods</i>: T-score from Dual-energy X-ray absorptiometry (DXA), and self-reported baseline characteristics were recorded for 24 female, cross-country-skiing-competitors, aged 68–76 years, from the Birkebeiner Ageing ...
    • Rationale and design of the Birkebeiner Ageing Study – a prospective cohort study of older endurance athletes 

      Myrstad, Marius; Johansen, Kristoffer Robin; Sørensen, Eivind; Ranhoff, Anette Hylen (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-13)
      Background - While regular physical activity is associated with reduced mortality and morbidity in general populations, health outcomes and functional capacity related to upholding strenuous endurance exercise beyond the age of 65 years are only sparsely studied. The aim of this study is to assess associations of prolonged strenuous endurance sport practice with ageing, functional decline, morbidity ...
    • Risk of atrial fibrillation and stroke among older men exposed to prolonged endurance sport practice: a 10-year follow-up. The Birkebeiner Ageing Study and the Tromsø Study 

      Johansen, Kristoffer Robin; Ranhoff, Anette Hylen; Sørensen, Eivind; Nes, Bjarne; Heitmann, Kim Arne; Apelland, Turid; Bucher Sandbakk, Silvana; Wilsgaard, Tom; Løchen, Maja-Lisa; Thelle, Dag Steinar; Morseth, Bente; Myrstad, Marius (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-17)
      <p><b> Aims</b> Endurance sport practice is associated with a high prevalence of atrial fibrillation (AF), which increases the risk of stroke in the general population. However, stroke risk in endurance athletes with AF is sparsely investigated. Most studies have been limited by design and are largely restricted to younger and middle-aged populations. Thus, we aimed to investigate AF and stroke ...
    • Ten-year mortality among older male recreational endurance athletes in the Birkebeiner Aging Study in comparison with older men from the Tromsø Study 

      Johansen, Kristoffer Robin; Hylen Ranhoff, Anette; Sørensen, Eivind; Nes, Bjarne Martens; Sandbakk, Silvana Bucher; Wilsgaard, Tom; Løchen, Maja-Lisa; Thelle, Dag Steinar; Morseth, Bente; Myrstad, Marius (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-10)
      Background: Physical activity (PA) is associated with reduced mortality. However, whether there is an added benefit of long-term endurance training is unclear. Thus, we aimed to examine 10-year mortality in older male endurance athletes compared with an older male general population. <p><p>Method: Male athletes (n=503) participating in an annual long-distance ski race (median years of participation: ...