• 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)
    • Factors associated with adherence to antiretroviral therapy in HIV-infected patients in Kathmandu District, Nepal 

      Shigdel, Rajesh; Klouman, Elise; Bhandari, Anita; Ahmed, Luai Awad (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 ...
    • Leisure time computer use and adolescent bone health - findings from the Tromsø Study, Fit Futures: a cross sectional study 

      Winther, Anne; Ahmed, Luai Awad; Furberg, Anne-Sofie; Grimnes, Guri; Jorde, Rolf; Nilsen, Ole-Andreas; Dennison, Elaine; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-03-20)
      <p>Objectives: Low levels of physical activity may have considerable negative effects on bone health in adolescence, and increasing screen time in place of sporting activity during growth is worrying. This study explored the associations between self-reported screen time at weekends and bone mineral density (BMD). <p>Design: In 2010/2011, 1038 (93%) of the region’s first-year upper-secondary ...
    • Low Serum Levels of 25-Hydroxyvitamin D Predict Hip Fracture in the Elderly: A NOREPOS Study 

      Holvik, Kristin; Ahmed, Luai Awad; Forsmo, Siri; Gjesdal, Clara Gram; Grimnes, Guri; Samuelsen, Sven Ove; Schei, Berit; Blomhoff, Rune; Tell, Grethe S; Meyer, Haakon E (Journal article; Tidsskriftartikkel; Peer reviewed, 2013-08-01)
      <p><i>Background</i>: Despite considerable interest, the relationship between circulating 25-hydroxyvitamin D and the risk of hip fracture is not fully established.</p> <p><i>Objective</i>: The objective of the study was to study the association between serum 25-hydroxyvitamin D concentrations [s-25(OH)D] and the risk of hip fracture in Norway, a high-latitude country that has some of the highest ...
    • Measurement of cortical porosity of the proximal femur improves identification of women with nonvertebral fragility fractures 

      Ahmed, Luai Awad; Shigdel, Rajesh; Joakimsen, Ragnar Martin; Eldevik, Odd Petter; Eriksen, Erik Fink; Ghasem-Zadeh, Ali; Bala, Yohann; Zebaze, Roger; Seeman, Ego; Bjørnerem, Åshild (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-16)
      Summary We tested whether cortical porosity of the proximal femur measured using StrAx1.0 software provides additional information to areal bone mineral density (aBMD) or Fracture Risk Assessment Tool (FRAX) in differentiating women with and without fracture. Porosity was associated with fracture independent of aBMD and FRAX and identified additional women with fractures than by osteoporosis or ...
    • The Tromsø Study: Fit Futures: a study of Norwegian adolescents' lifestyle and bone health 

      Winther, Anne; Dennison, Elaine; Ahmed, Luai Awad; Furberg, Anne-Sofie; Grimnes, Guri; Jorde, Rolf; Gjesdal, Clara Gram; Emaus, Nina (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-06-04)
      Summary: Bone mass achievement predicts later fracture risk. This population-based study describes bone mineral density levels (BMD) and associated factors in Norwegian adolescents. Compared with international reference ranges, BMD levels appear higher and physical activity levels are positively associated with BMD. <p>Purpose: Norway has one of the highest reported incidences of osteoporotic ...