• Ageing and mental health: Changes in self-reported health due to physical illness and mental health status with consecutive cross-sectional analyses 

      Lorem, Geir F; Schirmer, Henrik; Wang, Catharina Elisabeth Arfwedson; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-18)
      Objectives: It is known that self-reported health (SRH) declines with increasing age and that comorbidity increases with age. We wished to examine how age transfers its effect to SRH through comorbid disease and mental illness and whether these processes remained stable from 1994 until 2008. The hypothesis is that ageing and/or the increased age-related burden of pathology explains the declining ...
    • Are pro-inflammatory markers associated with psychological distress in a cross-sectional study of healthy adolescents 15–17 years of age? The Fit Futures study 

      Linkas, Jonas; Ahmed, Luai A.; Csifcsak, Gabor; Emaus, Nina; Furberg, Anne-Sofie; Grimnes, Guri; Pettersen, Gunn; Rognmo, Kamilla; Christoffersen, Tore (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-15)
      Background - Inflammatory markers have been associated with depression and anxiety disorder in adolescents. Less is known about the association between inflammation and subclinical symptoms in the form of psychological distress. We investigated prevalence of psychological distress and examined the associations between common pro-inflammatory markers and psychological distress in an adolescent ...
    • Arm use in patients with subacute stroke monitored by accelerometry : association with motor impairment and influence on self-dependence 

      Thrane, Gyrd; Emaus, Nina; Askim, Torunn; Anke, Audny (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      OBJECTIVE: To assess the effect of arm motor impairment on actual arm use in the early post-stroke period and explore its association with self-care dependency. SUBJECTS: Thirty-one patients recruited within the 30 first days after stroke. METHODS: Motor impairment of the upper extremity was measured with Fugl-Meyer Motor Assessment (FMA) and arm use was measured with accelerometry. Arm movement ...
    • The association between anthropometric measures of adiposity and the progression of carotid atherosclerosis 

      Imahori, Yume; Mathiesen, Ellisiv B.; Morgan, Katy E.; Frost, Chris; Hughes, Alun D.; Hopstock, Laila Arnesdatter; Johnsen, Stein Harald; Emaus, Nina; Leon, David Adrew (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-17)
      <i>Background</i> - Few reports are available on the contribution of general and abdominal obesity to the progression of carotid atherosclerosis in late adulthood. This study investigated the impact of four simple anthropometric measures of general and abdominal obesity on the progression of carotid atherosclerosis and the extent to which the association between adiposity and the progression of ...
    • The association between childhood fractures and adolescence bone outcomes: a population-based study, the Tromsø Study, Fit Futures 

      Christoffersen, Tore; Emaus, Nina; Dennison, Elaine; Furberg, Anne-Sofie; Gracia-Marco, Luis; Grimnes, Guri; Nilsen, Ole-Andreas; Vlachopoulos, Dimitris; Winther, Anne; Ahmed, Luai A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-16)
      <p><i>SUMMARY</i>: Childhood fracture may predict persistent skeletal fragility, but it may also reflect high physical activity which is beneficial to bone development. We observe a difference in the relationship between previous fracture and bone outcome across physical activity level and sex. Further elaboration on this variation is needed.</p> <p><i>PURPOSE</i>: Childhood fracture may be an ...
    • The association of grip strength from midlife onwards with all-cause and cause-specific mortality over 17 years of follow-up in the Tromsø Study 

      Strand, Bjørn Heine; Cooper, Rachel; Bergland, Astrid; Jørgensen, Lone; Schirmer, Henrik; Skirbekk, Vegard; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-25)
      <b>Background</b> Grip strength has consistently been found to predict all-cause mortality rates. However, few studies have examined cause-speci fi c mortality or tested age differences in these associations. <b>Methods</b> In 1994, grip strength was measured in the population-based Tromsø Study, covering the ages 50 – 80 years (N=6850). Grip strength was categorised into fi fths, and ...
    • Body weight and body mass index influence bone mineral density in late adolescence in a two-year follow-up study. The Tromsø Study: Fit Futures 

      Nilsen, Ole Andreas; Ahmed, Luai A.; Winther, Anne; Christoffersen, Tore; Thrane, Gyrd; Evensen, Elin; Furberg, Anne-Sofie; Grimnes, Guri; Dennison, Elaine; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-04)
      Determinants of bone acquisition in late adolescence and early adulthood are not well‐described. This 2‐year follow‐up study explored the associations of body weight (BW), body mass index (BMI), and changes in weight status with adolescent bone accretion in a sample of 651 adolescents (355 girls and 296 boys) between 15 and 19 years of age from The Tromsø Study: Fit Futures. This Norwegian ...
    • Bone mineral density at the hip and its relation to fat mass and lean mass in adolescents: the Tromsø Study, Fit Futures 

      Winther, Anne; Jørgensen, Lone; Ahmed, Luai A.; Christoffersen, Tore; Furberg, Anne-Sofie; Grimnes, Guri; Jorde, Rolf; Nilsen, Ole-Andreas; Dennison, Elaine M.; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-19)
      <p><i>Background</i>: Positive association between body weight and bone mass is well established, and the concept of body mass index (BMI) is associated with higher areal bone mineral density (aBMD) and reduced fracture risk. BMI, that comprises both fat mass (FM) and lean mass (LM) may contribute to peak bone mass achievement in different ways. This study explored the influence of body composition ...
    • Bone mineral density is associated with Vitamin D related rs6013897 and estrogen receptor polymorphism rs4870044: The Tromsø study 

      Martinaityte, Ieva; Jorde, Rolf; Emaus, Nina; Eggen, Anne Elise; Joakimsen, Ragnar Martin; Kamycheva, Elena (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-02)
      Background:<br>Bone mineral density (BMD) is determined by bone remodeling processes regulated by endocrine, autocrine and genetic mechanisms. Thus, some studies have reported that BMD is associated with single nucleotide polymorphisms (SNPs) associated with vitamin D receptor (VDR), serum 25(OH)D levels and estrogen receptor 1 (ESR1), but without consensus. Therefore, we aimed to map and compare ...
    • C-Reactive Protein and TGF-α Predict Psychological Distress at Two Years of Follow-Up in Healthy Adolescent Boys: The Fit Futures Study 

      Linkas, Jonas; Ahmed, Luai A.; Csifcsak, Gabor; Emaus, Nina; Furberg, Anne-Sofie; Grimnes, Guri; Pettersen, Gunn; Rognmo, Kamilla; Christoffersen, Tore (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-11)
      Objective: The scarcity of research on associations between inflammatory markers and symptoms of depression and anxiety during adolescence has yielded inconsistent results. Further, not all studies have controlled for potential confounders. We explored the associations between baseline inflammatory markers and psychological distress including moderators at follow-up in a Norwegian adolescent population ...
    • Can bone mineral density loss in the non-weight bearing distal forearm predict mortality? 

      Hauger, Annette Vogt; Bergland, Astrid; Holvik, Kristin; Emaus, Nina; Strand, Bjørn Heine (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-30)
      <i>Purpose</i> - Low bone mineral density (BMD) is associated with increased risk of fractures and mortality. We investigated if rate of BMD loss in the distal forearm over seven years predicted mortality.<br><br> <i>Methods</i> - 1725 postmenopausal women and 1879 men aged 50–74 who participated in the longitudinal Tromsø Study waves 4 (1994–95) and 5 (2001−2002) were included. Cox regression ...
    • Changes and tracking of bone mineral density in late adolescence: the Tromsø Study, Fit Futures 

      Nilsen, Ole Andreas; Ahmed, Luai A.; Winther, Anne; Christoffersen, Tore; Furberg, Anne-Sofie; Grimnes, Guri; Dennison, Elaine; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-08)
      <p><i>Summary</i>: Areal bone mineral density (aBMD) predicts future fracture risk. This study explores the development of aBMD and associated factors in Norwegian adolescents. Our results indicate a high degree of tracking of aBMD levels in adolescence. Anthropometric measures and lifestyle factors were associated with deviation from tracking.</p> <p><i>Purpose</i>: Norway has one of the highest ...
    • Changes in self-reported health trajectories with focus on ageing in the Tromsø study 

      Lorem, Geir F; Schirmer, Henrik; Emaus, Nina (Conference object; Konferansebidrag, 2016)
      Aim: We aim to describe factors that affect self-reported health (SRH) and to describe differences in trajectories in an ageing cohort according to comorbid diseases, mental health, physical condition, education, and physical activity. Methods: Prospective cohort study of a general population in Norway utilizing repeated surveys and physical examinations (1986-2008). We included 16 745 men and ...
    • Cohort profile: Norwegian Epidemiologic Osteoporosis Studies (NOREPOS) 

      Søgaard, Anne Johanne; Meyer, Haakon E; Emaus, Nina; Grimnes, Guri; Gjesdal, Clara Gram; Forsmo, Siri; Schei, Berit; Tell, Grethe Seppola (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-10-02)
      Aims: This paper describes the history, purpose, data collection and contributions in the research collaboration Norwegian Osteoporosis Epidemiologic Studies (NOREPOS). <br>Methods: NOREPOS encompasses almost 85,000 bone mineral density measurements within Cohort of Norway and data on almost 140,000 hip fractures in Norway 1994–2008. Included are anthropometric measurements, blood pressure, ...
    • Cross-sectional study of the differences between measured, perceived and desired body size and their relations with self-perceived health in young adults: The Tromsø Study - Fit Futures 2 

      Sand, Anne-Sofie; Furberg, Anne-Sofie; Lian, Olaug S; Nielsen, Christopher Sivert; Pettersen, Gunn; Winther, Anne; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-09)
      Aims: The aim of this study was to explore the relationships between measured body size (body mass index (BMI)), perceived body size, weight change wishes and self-perceived health in young adults. Methods: The participants were recruited from a school-based population study in Norway, the Tromsø Study: Fit Futures 2, carried out in 2012–2013. A total of 629 young women and men (aged 18–23 years) ...
    • Do More Recent Born Generations of Older Adults Have Stronger Grip? A Comparison of Three Cohorts of 66- to 84-Year-Olds in the Tromsø Study 

      Strand, Bjørn Heine; Bergland, Astrid; Jørgensen, Lone; Schirmer, Henrik; Emaus, Nina; Cooper, Rachel (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-11)
      <p><i>Background</i>: Evidence pertaining to whether more recent born generations of adults reaching old age have better physical capability than previous generations is scarce and inconclusive. We aimed to investigate birth cohort differences in grip strength.</p> <p><i>Methods</i>: The study comprised 5,595 individuals from the Tromsø study waves in 1994/1995, 2007/2008, and 2015/2016. Grip ...
    • Does the frequency and intensity of physical activity in adolescence have an impact on bone? The Tromsø Study, Fit Futures 

      Christoffersen, Tore; Winther, Anne; Nilsen, Ole-Andreas; Ahmed, Luai Awad; Furberg, Anne-Sofie; Grimnes, Guri; Dennison, Elaine; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-10)
      Background: Optimization of the genetic potential for bone accrual in early life may prevent future fractures. Possible modification factors include lifestyle factors such as nutrition and physical activity. Measured levels of bone mineral density (BMD) and bone mass content (BMC) are indicators of bone strength, and are correlated with fracture risk. This study explored the impact of self-reported ...
    • External Validation of the Garvan Nomograms for Predicting Absolute Fracture Risk: The Tromsø Study 

      Ahmed, Luai Awad; Nguyen, ND; Bjørnerem, Åshild; Joakimsen, Ragnar Martin; Jørgensen, Lone; Størmer, Jan; Bliuc, D; Center, Jacqueline R; Eisman, John; Nguyen, Tuan; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Fracture incidence rates in Norwegian children, The Tromsø Study, Fit Futures 

      Christoffersen, Tore; Ahmed, Luai Awad; Winther, Anne; Nilsen, Ole-Andreas; Furberg, Anne-Sofie; Grimnes, Guri; Dennison, Elaine; Center, Jacqueline R; Eisman, John A.; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-12-08)
      Summary: <br> This study describes childhood fracture rates in Norway, a country known for high fracture rates in the adult population. Fracture rates correspond with other reports from Scandinavia, although with a slightly higher proportion in girls. Indications of increased vulnerability during stages of puberty require further exploration. <p>Introduction: Fractures are common injuries during ...