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Browsing NTNU Open by Author "Mai, Xiao-Mei"

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Now showing items 1-20 of 38

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    • Adiposity and asthma in adults: a bidirectional Mendelian randomization analysis of the HUNT Study 

      Sun, Yi-Qian; Brumpton, Ben Michael; Langhammer, Arnulf; Chen, Yue; Kvaløy, Kirsti; Mai, Xiao-Mei (Journal article; Peer reviewed, 2019)
      Background We aimed to investigate the potential causal associations of adiposity with asthma overall, asthma by atopic status or by levels of symptom control in a large adult population and stratified by sex. We also ...
    • Association between vitamin D status and long-term changes of lipid profile in healthy and younger adults 

      Eikås, Jørgen (Master thesis, 2016)
      Background Dyslipidaemia is the condition of abnormal lipid levels and is considered a criterion in the pathogenesis of arteriosclerosis. Vitamin D is considered to be beneficial for overall health, however the prevalence ...
    • Associations of serum 25-hydroxyvitamin D level with incidence of lung cancer and histologic types in Norwegian adults: a case-cohort analysis of the HUNT study 

      Sun, Yi-Qian; Langhammer, Arnulf; Wu, Chunsen; Skorpen, Frank; Chen, Yue; Nilsen, Tom Ivar Lund; Romundstad, Pål Richard; Mai, Xiao-Mei (Journal article, 2017)
      Background: Previous prospective studies have shown inconsistent associations between serum 25-hydroxyvitamin D [25(OH)D] level and lung cancer incidence. The aim of the present study was to explore the associations of ...
    • Body mass index and all cause mortality in HUNT and UK Biobank studies: linear and non-linear mendelian randomisation analyses 

      Sun, Yi-Qian; Burgess, Stephen; Staley, James R.; Wood, Angela M.; Bell, Steven; Kaptoge, Stephen; Guo, Qi; Bolton, Thomas R.; Mason, Amy M; Butterworth, Adam S.; Di Angelantonio, Emanuele; Vie, Gunnhild Åberge; Bjørngaard, Johan Håkon; Kinge, Jonas Minet; Chen, Yue; Mai, Xiao-Mei (Journal article; Peer reviewed, 2019)
      Objective To investigate the shape of the causal relation between body mass index (BMI) and mortality. Design Linear and non-linear mendelian randomisation analyses. Setting Nord-Trøndelag Health (HUNT) Study (Norway) ...
    • Chronic obstructive pulmonary disease (COPD): Influence of comorbidities on health status, morbidity and mortality in a 25 years follow-up populationbased study. The HUNT Study. 

      Vikjord, Sigrid Anna Aalberg (Doctoral theses at NTNU;2020:254, Doctoral thesis, 2020)
    • Cod liver oil intake and incidence of asthma in Norwegian adults-the HUNT study 

      Mai, Xiao-Mei; Langhammer, Arnulf; Chen, Yue; Camargo, Carlos Arthuro (Journal article; Peer reviewed, 2013)
      Background Cod liver oil is an important source of vitamin D, but also contains other fat-soluble components such as vitamin A. Before 1999, the cod liver oil formula in Norway contained a high concentration of vitamin A ...
    • Cross-Sectional and Prospective Cohort Study of Serum 25-Hydroxyvitamin D Level and Obesity in Adults 

      Mai, Xiao-Mei; Chen, Yue; Camargo, Carlos Arthuro; Langhammer, Arnulf (Journal article; Peer reviewed, 2012)
      Experimental studies suggest that vitamin D modulates the activity of adipocytes. The authors examined baseline serum 25-hydroxyvitamin D (25(OH)D) level in relation to prevalent and cumulative incident obesity in Norway. ...
    • Determinants of vitamin D supplement use in Canadians 

      McCormack, Daniel; Mai, Xiao-Mei; Chen, Yue (Journal article; Peer reviewed, 2015)
      To determine the prevalence of vitamin D supplement use in Canadian adults and associations with demographic and socio-economic variables. Data from the Healthy Aging module of the Canadian Community Health Survey were ...
    • Factors associated with vitamin D deficiency in a Norwegian population: the HUNT Study 

      Larose, Tricia L; Chen, Yue; Camargo, Carlos Arthuro; Langhammer, Arnulf; Romundstad, Pål Richard; Mai, Xiao-Mei (Journal article; Peer reviewed, 2014)
      Vitamin D deficiency occurs worldwide. Winter season and high Body Mass Index (BMI) are associated with low levels of serum 25-hydroxyvitamin D (25(OH)D). We estimated the prevalence of vitamin D deficiency in a Norwegian ...
    • General and abdominal obesity and incident asthma in adults: the HUNT study 

      Brumpton, Ben Michael; Langhammer, Arnulf; Romundstad, Pål Richard; Chen, Yue; Mai, Xiao-Mei (Journal article; Peer reviewed, 2013)
      Measures of body mass index (BMI) and waist circumference define general obesity and abdominal obesity respectively. While high BMI has been established as a risk factor for asthma in adults, waist circumference has seldom ...
    • GOLD Classifications, COPD Hospitalization, and All-Cause Mortality in Chronic Obstructive Pulmonary Disease: The HUNT Study 

      Bhatta, Laxmi; Leivseth, Linda; Mai, Xiao-Mei; Henriksen, Anne Hildur; Carslake, David; Chen, Yue; Langhammer, Arnulf; Brumpton, Ben Michael (Peer reviewed; Journal article, 2020)
      Purpose: The Global Initiative for Chronic Obstructive Lung Disease (GOLD) has published three classifications of COPD from 2007 to 2017. No studies have investigated the ability of these classifications to predict ...
    • Hours lying down per day, as a proxy for sedentary behaviour and risk of diabetes in young and middle-aged adults in Norway: an 11-year follow-up of the HUNT study 

      Asante, Ernest O; Sun, Yi-Qian; Nilsen, Tom Ivar Lund; Åsvold, Bjørn Olav; Sørgjerd, Elin Pettersen; Mai, Xiao-Mei (Peer reviewed; Journal article, 2020)
      Objective We aimed to examine relationship between hours lying down per day, as a proxy for sedentary behaviour and risk of diabetes in young and middle-aged adults, and to assess if leisure-time physical activity and body ...
    • Intake of multivitamin supplements and incident asthma in Norwegian adults: the HUNT study 

      Jiang, Lin; Brumpton, Ben Michael; Langhammer, Arnulf; Chen, Yue; Mai, Xiao-Mei (Journal article; Peer reviewed, 2015)
      Although intake of multivitamin supplements is becoming increasingly popular, the relationship between intake of multivitamin supplements and incident asthma remains unclear. Prospective studies in adults with long-term ...
    • Is there an Association between vitamin D status and risk of chronic low bak pain? A nested case-Control analysis in the Nord-Trøndelag Health Study 

      HEUCH, INGRID; Heuch, Ivar; Hagen, Knut; Mai, Xiao-Mei; Langhammer, Arnulf; Zwart, John-Anker (Journal article; Peer reviewed, 2017)
      Objectives: To explore potential associations between vitamin D status and risk of chronic low back pain (LBP) in a Norwegian cohort, and to investigate whether relationships depend on the season of blood sample collection. ...
    • Leisure-time physical activity, occupational physical activity, and the risk of type 2 diabetes : the HUNT study 

      Hveem, Ole-Martin (Master thesis, 2017)
      Background: Type 2 diabetes has become one of the major health concerns in the world, with its prevalence growing over the last decades. Previous studies have shown that leisure-time physical activity may reduce the risk ...
    • Metabolic syndrome and incidence of asthma in adults: the HUNT study 

      Brumpton, Ben Michael; Camargo, Carlos; Romundstad, Pål Richard; Langhammer, Arnulf; Chen, Yue; Mai, Xiao-Mei (Journal article; Peer reviewed, 2013)
      Obesity is a risk factor for incident asthma in adults, and obesity is a major component of metabolic syndrome. This study aimed to explore the associations of metabolic syndrome and its components with the cumulative ...
    • Mixed evidence for the relationship between periodontitis and Alzheimer’s disease: A bidirectional Mendelian randomization study 

      Sun, Yi-Qian; Richmond, Rebecca C.; Chen, Yue; Mai, Xiao-Mei (Journal article; Peer reviewed, 2020)
      Recent experimental studies indicated that a periodontitis-causing bacterium might be a causal factor for Alzheimer’s disease (AD). We applied a two-sample Mendelian randomization (MR) approach to examine the potential ...
    • No association between circulating concentrations of vitamin D and risk of lung cancer: An analysis in 20 prospective studies in the Lung Cancer Cohort Consortium (LC3) 

      Muller, David C.; Hodge, Allison M.; Fanidi, Anouar; Albanes, Demetrius; Mai, Xiao-Mei; Shu, Xiao Ou; Weinstein, Stephanie J.; Larose, Tricia L; Zhang, Xuehong; Han, Jingquan; Stampfer, Meir J.; Smith-Warner, Stephanie A.; Ma, Jing; Gaziano, John Michael; Sesso, Howard D.; Stevens, Victoria L.; McCullough, Marjorie L.; Layne, Tracy M.; Prentice, Ross; Pettinger, Mary; Thomson, Cynthia A.; Zheng, Wei; Gao, Yutang; Rothman, Nathaniel; Xiang, Yong-Bing; Cai, Hui; Wang, Rui; Yuan, Jian-Min; Koh, Woon-Puay; Butler, Lesley M.; Cai, Qiuyin; Blot, William James; Wu, Jie; Ueland, Per Magne; Midttun, Øivind; Langhammer, Arnulf; Hveem, Kristian; Johansson, Mikael B.; Hultdin, Johan; Grankvist, Kjell; Arslan, Alan A.; Le Marchand, Loïc; Severi, Gianluca; Johansson, Mattias; Brennan, Paul (Journal article; Peer reviewed, 2018)
      Background There is observational evidence suggesting that high vitamin D concentrations may protect against lung cancer. To investigate this hypothesis in detail, we measured circulating vitamin D concentrations in ...
    • Physical Activity and Incident Asthma in Adults: The HUNT Study, Norway. 

      Brumpton, Ben Michael; Langhammer, Arnulf; Ferreira, Manuel A R; Chen, Yue; Mai, Xiao-Mei (Journal article; Peer reviewed, 2016)
      Objective: We aimed to investigate the associations of physical activity and change in physical activity with incident asthma in a cohort of Norwegian adults. Design: We conducted a prospective cohort study using ...
    • Plasma 25-hydroxyvitamin D associated with pulmonary function in Canadian adults with excess adiposity 

      Khan, S; Mai, Xiao-Mei; Chen, Y (Journal article; Peer reviewed, 2013)
      Background: Vitamin D deficiency is an important health issue, particularly among people residing in northern countries. Low concentrations of 25-hydroxyvitamin D [25(OH)D] have been linked to several health conditions. ...

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