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norskBlar i forfatter Det helsevitenskapelige fakultet "Johansson, Jonas"
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Anthropometric measures are satisfactory substitutes for the DXA‐derived visceral adipose tissue in the association with cardiometabolic risk—The Tromsø Study 2015–2016
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-03)Background - Body mass index (BMI) increases while cardiometabolic risk factors decrease in individuals in high-income countries. This paradoxical observation raises the question of whether current measures of overweight and obesity properly identify cardiometabolic risk.<p> <p>Methods - A total of 3675 participants (59% women) aged 40–84 years with whole-body dual-energy x-ray absorptiometry ... -
Complex lifestyle intervention among inactive older adults with elevated cardiovascular disease risk and obesity: a mixed-method, single-arm feasibility study for RESTART—a randomized controlled trial
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-27)Background - Physical inactivity and obesity are global public health challenges. Older adults are important to target for prevention and management of disease and chronic conditions. However, many individuals struggle with maintaining increased physical activity (PA) and improved diet. This feasibility study provides the foundation for the RESTART trial, a randomized controlled trial (RCT) to test ... -
Differences in sarcopenia prevalence between upper-body and lower-body based EWGSOP2 muscle strength criteria: the Tromsø study 2015–2016
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-10)<p><i>Background - </i>The European Working Group on Sarcopenia in Older People (EWGSOP2) recommends grip strength and chair stand tests to be used as primary defining measures. It is unclear how either test affects prevalence estimates. <p><i>Methods - </i>This cross-sectional study involved 3498 community-dwelling participants (40–84 years) from the 7th Tromsø Study survey (2015–2016). We used ... -
Dual-Energy X-Ray Absorptiometry Derived Adiposity Measures and Pre-Frailty/Frailty among Norwegian Adults: The Tromsø Study 2007–2015
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-25)OBJECTIVES: Aging is associated with changes in body composition. Excess adiposity among older adults has been linked with metabolic syndromes and aggravated age-associated decline in physical functioning. Few longitudinal studies have explored the association between dual-energy X-ray absorptiometry (DXA)-derived total as well as central adiposity measures and frailty. We examined the association ... -
Measuring Physical Activity Using Triaxial Wrist Worn Polar Activity Trackers: A Systematic Review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020)Collecting objective physical activity data from research participants are increasingly done using consumer-based activity trackers. Several validation studies of Polar devices are conducted to date, but no systematic review of the current level of accuracy for these devices exist. The aim of this study is therefore to investigate the accuracy of current wrist-worn Polar devices that equips a triaxial ... -
Moderate-to-vigorous physical activity modifies the relationship between sedentary time and sarcopenia: the Tromsø Study 2015–2016
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-01)<p>Background: Sarcopenia is an age-related muscle disease primarily characterized by reductions in muscle strength that increases the risk of falls, fractures, cognitive impairment, and mortality. Exercise is currently preferred in prevention and treatment, but it is unknown how different habitual physical activity and sedentary behaviour patterns associate with sarcopenia status. The purpose of ... -
A multiple risk factor program is associated with decreased risk of cardiovascular disease in 70-year-olds: A cohort study from Sweden
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-11)<i>Background</i> - In individuals below 65 years of age, primary prevention programs have not been successful in reducing the risk of cardiovascular disease (CVD) and death. However, no large study to our knowledge has previously evaluated the effects of prevention programs in individuals aged 65 years or older. The present cohort study evaluated the risk of CVD in a primary prevention program for ... -
Reference Values for DXA-Derived Visceral Adipose Tissue in Adults 40 Years and Older from a European Population: The Tromsø Study 2015–2016
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-17)Background. Reference values for visceral adipose tissue (VAT) are needed and it has been advocated that body composition measures depend on both the technique and methods applied, as well as the population of interest. We aimed to develop reference values for VAT in absolute grams (VATg), percent (VAT%), and as a kilogram-per-meters-squared index (VATindex) for women and men, and investigate potential ... -
Secular and longitudinal trends in body composition: The Tromsø Study, 2001 to 2016
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-14)<p><i>Objective - </i>Overweight, defined as excessive fat mass, is a long-standing worldwide public health challenge. Traditional anthropometric measures used to identify overweight and obesity do not assess body composition. The aim of this study was to examine population trends in general and abdominal fat mass during the past two decades. <p><i>Methods - </i>This study included participants ... -
Self-reported protein intake and properties of bone in community-dwelling older individuals
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-31)Summary This study revealed that a quick and simple estimation of protein intake was related to measures of bone density and area in 70-year-old individuals. Furthermore, these associations were mediated by muscle mass when investigating peripheral measurement sites such as arms and legs.<p> <p>Purpose Recent evidence suggests that dietary protein is beneficial for bone health in older individuals, ... -
Short-term balance training and acute effects on postural sway in balance-deficient older adults: a randomized controlled trial
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-09)<p>Background: We aimed to determine the effectiveness of 4 weeks of balance exercise compared with no intervention on objectively measured postural sway. <p>Methods: This was a single-center parallel randomized controlled, open label, trial. A six-sided dice was used for allocation at a 1:1-ratio between exercise and control. The trial was performed at a university hospital clinic in Sweden and ... -
Short-term balance training and acute effects on postural sway in balancedeficient older adults: a randomized controlled trial
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-09)<p>Background: We aimed to determine the effectiveness of 4 weeks of balance exercise compared with no intervention on objectively measured postural sway. <p>Methods: This was a single-center parallel randomized controlled, open label, trial. A six-sided dice was used for allocation at a 1:1-ratio between exercise and control. The trial was performed at a university hospital clinic in Sweden and ... -
Vertebral fractures assessed by dual-energy X-ray absorptiometry and all-cause mortality. The Tromsø Study 2007-2020
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-16)Vertebral fractures have been associated with increased mortality, but findings are inconclusive, and many vertebral fractures avoid clinical attention. We investigated this association in a general population of 2,476 older adults aged ≥55 years from Tromsø, Norway, who were followed over 2007–2020, using dual-energy x-ray absorptiometry (DXA) at baseline to evaluate vertebral fractures (mild, ...
