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norskBlar i forfatter "Aars, Nils Abel"
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Association between objectively measured physical activity and longitudinal changes in body composition in adolescents: the Tromsø study fit futures cohort
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-07)<i>Objectives</i> - Physical activity may be important in deterring the obesity epidemic. This study aimed to determine whether objectively measured physical activity in first year of upper secondary high school predicted changes in body composition over 2 years of follow-up in a cohort of Norwegian adolescents (n=431).<p> <p><i>Design</i> - A longitudinal study of adolescents (mean age of 16 (SD ... -
Changes in body mass index and the prevalence of obesity during 1994–2008: repeated cross-sectional surveys and longitudinal analyses. The Tromsø Study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-12)Objectives: To determine the mean body mass index (BMI, kg/m2 ) and prevalence of low weight (BMI<20) and obesity (BMI≥30) in 3 population-based surveys, and to describe the longitudinal changes during 1994– 2008 in mean BMI, and the prevalence of low weight and obesity. Setting: A population study in Tromsø, Norway. Participants: A total of 29 688 different participants in 1 or more of 3 ... -
Changes in waist circumference and the prevalence of abdominal obesity during 1994-2008 - cross-sectional and longitudinal results from two surveys: the Tromsø Study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-21)<b>Background:</b> Abdominal obesity increases all-cause mortality and is a risk factor for a number of diseases. There are few population-based studies of the longitudinal changes of abdominal obesity.<br> <b>Methods:</b> Based on data from the Tromsø Study, we studied gender- and age-specific mean waist circumference and prevalence of abdominal overweight and abdominal obesity in two surveys ... -
Criterion validity of the Saltin-Grimby Physical Activity Level Scale in adolescents. The Fit Futures Study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-01)Background<p> <p>The Saltin-Grimby Physical Activity Level Scale (SGPALS) is commonly used to measure physical activity (PA) in population studies, but its validity in adolescents is unknown. This study aimed to assess the criterion validity of the SGPALS against accelerometry in a large sample of adolescents. A secondary aim was to examine the validity across strata of sex, body mass index (BMI), ... -
Do declines in occupational physical activity contribute to population gains in body mass index? Tromsø Study 1974–2016
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-04)<i>Objective</i> - To examine whether occupational physical activity changes predict future body mass index (BMI) changes.<p> <p><i>Methods</i> - This longitudinal cohort study included adult participants attending ≥3 consecutive Tromsø Study surveys (examinations 1, 2 and 3) from 1974 to 2016 (N=11 308). If a participant attended >3 surveys, the three most recent surveys were included. Occupational ... -
Economic analyses of supported employment programmes for people with mental health conditions: A systematic review
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-19)Background - Employment is intrinsic to recovery from mental health conditions, helping people live independently. Systematic reviews indicate supported employment (SE) focused on competitive employment, including individual placement and support (IPS), is effective in helping people with mental health conditions into work. Evidence is limited on cost-effectiveness. We comprehensively reviewed ... -
Longitudinal changes in body composition and waist circumference by self-reported levels of physical activity in leisure among adolescents: the Tromsø Study, Fit Futures
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-17)<p><i>Background - </i>It is not clear how physical activity affects body composition in adolescents. Physical activity levels are often reduced during this period, and the relative proportion of body fat mass and lean mass undergo natural changes in growing adolescents. We aimed to examine whether self-reported physical activity in leisure time at baseline or change in activity during follow-up ... -
Longitudinal changes in desired body weight compared to changes in body weight: evidence of adaptation to weight gain?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-21)<b>Background: </b>Overweight individuals desire a lower weight than they actually have. Little is known on the extent to which this discrepancy is reduced over time due to adaptation or resignation. The aim of this study is to describe cross-sectional relationships and longitudinal changes in desired body weight and differences between actual and desired body weight according to gender, age and ... -
A longitudinal study of the changes in BMI, waist circumference, waist-to-height-ratio and desired BMI of the participants in the 4th, 5th and 6th survey of the Tromsø Study.
(Master thesis; Mastergradsoppgave, 2014-04-29)Background: prevalence of obesity and overweight continues to increase in Norway, and more in young than old. This thesis has sought to describe the changes in BMI, with supplementary analyses of WC and WHtR, over a 13-year period. Furthermore, desired BMI (DBMI) has been analysed to assess whether the discrepancy between weight and desired weight is dependent on BMI categories of normal weight, ... -
Physical Activity and Body Composition in Norwegian Adolescents. Results from The Tromsø Study: Fit Futures
(Doctoral thesis; Doktorgradsavhandling, 2021-02-04)The present thesis has investigated the cross-sectional and prospective associations between self-reported and objectively measured physical activity with five objectively measured indices of body composition in Norwegian adolescents participating in the Tromsø Study Fit: Futures Cohort. The three included papers used regression analyses to assess the cross-sectional association between self-reported ...
