Blar i forfatter "Johansen, Kristoffer Robin"

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    • 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)

    • Females display lower risk of myocardial infarction from higher estimated cardiorespiratory fitness than males. The Tromsø Study 1994-2014 

      Sagelv, Edvard Hamnvik; Casolo, Andrea; Eggen, Anne Elise; Heitmann, Kim Arne; Johansen, Kristoffer Robin; Løchen, Maja-Lisa; Mathiesen, Ellisiv B.; Morseth, Bente; Njølstad, Inger; Osborne, John Owen; Hagerupsen, Karianne; Pedersen, Sigurd; Wilsgaard, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-06)
      Objective - To examine the dose-response association between estimated cardiorespiratory fitness (eCRF) and risk of myocardial infarction (MI).<p> <p>Patients and Methods - Adults who attended Tromsø Study surveys 4-6 (Janurary 1,1994-December 20, 2008) with no previous cardiovascular disease were followed up through December 31, 2014 for incident MI. Associations were examined using restricted ...

    • Occupational physical activity and risk of mortality in women and men: the Tromsø Study 1986–2021 

      Sagelv, Edvard Hamnvik; Dalene, Knut Eirik; Eggen, Anne Elise; Ekelund, Ulf; Fimland, Marius Steiro; Heitmann, Kim Arne; Holtermann, Andreas; Johansen, Kristoffer Robin; Løchen, Maja-Lisa; Morseth, Bente; Wilsgaard, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-01)
      Objective - Associations between occupational physical activity (OPA) and mortality risks are inconclusive. We aimed to examine associations between (1) OPA separately and (2) jointly with leisure time physical activity (LTPA), and risk of all-cause, cardiovascular disease (CVD) and cancer mortality, over four decades with updated exposure and covariates every 6–8 years.<p> <p>Methods - Adults ...

    • 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: ...