Blar i forfatter "Ryabikov, Andrew"

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    • Between-study differences in grip strength: a comparison of Norwegian and Russian adults aged 40-69 years 

      Cooper, Rachel; Shkolnikov, Vladimir M.; Kudryavtsev, Alexander; Malyutina, Sofia; Ryabikov, Andrew; Hopstock, Laila Arnesdatter; Johansson, Jonas; Cook, Sarah Anne; Leon, David; Strand, Bjørn Heine (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-03)
      Background - Identifying individuals with low grip strength is an initial step in many operational definitions of sarcopenia. As evidence indicates that contemporaneous Russian populations may have lower mean levels of grip strength than other populations in northern Europe, we aimed to: compare grip strength in Russian and Norwegian populations by age and sex; investigate whether height, body mass ...

    • Comparing prevalence of chronic kidney disease and its risk factors between population-based surveys in Russia and Norway 

      Cook, Sarah; Solbu, Marit Dahl; Eggen, Anne Elise; Iakunchykova, Olena; Averina, Maria; Hopstock, Laila Arnesdatter; Kholmatova, Kamila Kahramonzhonovna; Kudryavtsev, Alexander V; Leon, David A.; Malyutina, Sofia; Ryabikov, Andrew; Williamson, Elizabeth; Nitsch, Dorothea (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-14)
      Background - Little data exists on the prevalence of chronic kidney disease (CKD) in the Russian population. We aimed to estimate the prevalence of CKD in a population-based study in Russia, compare with a similar study in Norway, and investigate whether differences in risk factors explained between-study differences in CKD.<p> <p>Methods - We compared age- and sex-standardised prevalence of ...

    • Influence of hypertension on systolic and diastolic left ventricular function including segmental strain and strain rate 

      Kornev, Mikhail; Hatice, Akay Caglayan; Kudryavtsev, Alexander V; Malyutina, Sofia; Ryabikov, Andrew; Schirmer, Henrik; Rösner, Assami (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-22)
      Background - Left ventricular (LV) systolic and diastolic functions are important cardiovascular risk predictors in patients with hypertension. However, data on segmental, layer-specific strain, and diastolic strain rates in these patients are limited. The aim of this study was to investigate segmental two-dimensional strain rate imaging (SRI)-derived parameters to characterize LV systolic and ...

    • Novel approach to artefact detection and the definition of normal ranges of segmental strain and strain-rate values 

      Kornev, Mikhail; Caglayan, Hatice Aklay; Kudryavtsev, Alexander V; Malyutina, Sofia; Ryabikov, Andrew; Stylidis, Michael; Schirmer, Henrik; Rosner, Assami (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-13)
      Aims - Strain artefacts are known to hamper the correct interpretation of segmental strain and strain-rate (S/SR). Defining the normal ranges of myocardial segmental deformation is important in clinical studies and routine echocardiographic practice. In order to define artefact-free normal ranges for segmental longitudinal S/SR parameters, we investigated the extent to which different types of ...