0000000000548455
AUTHOR
Sindre M. Dyrstad
showing 7 related works from this author
Associations between changes in physical fitness and psychological difficulties status among Norwegian adolescents
2021
Abstract Objectives To investigate the associations for one-year changes in cardiorespiratory fitness, muscular strength and body mass index, with psychological difficulties status in adolescents. Methods Norwegian 14-15-year-olds (n = 925) participated in data collection at two time points separated by one year. Psychological difficulties were assessed via the Strengths and Difficulties questionnaire and data from follow-up serve as the dependent variable. Cardiorespiratory fitness (the Andersen-test), muscular strength (Eurofit) and body mass index were measured. Change scores were calculated from the physical fitness variables and serve as independent variables in linear mixed effects mo…
The effect of a school-based intervention on physical activity, cardiorespiratory fitness and muscle strength : the School in Motion cluster randomiz…
2020
Abstract Background Physical activity (PA) declines throughout adolescence, therefore PA promotion during this period is important. We analyzed the effect of two school-based PA interventions on daily PA levels, cardiorespiratory fitness (CRF) and muscle strength among adolescents. Methods For the nine-month School in Motion intervention study (ScIM), we cluster-randomized 30 Norwegian secondary schools (N = 2084, mean age [SD] = 14 [0.3] years) to one of three study arms. The physically active learning (PAL) intervention included 30 min physically active learning, 30 min PA and a 60 min physical education (PE) lesson per week. The Don’t worry-Be happy (DWBH) intervention included a 60 min …
The association between physical fitness and mental health in Norwegian adolescents
2020
Abstract Background Studies indicate that health-related components of physical fitness are associated with mental health outcomes. However, research is scarce concerning this relationship in young adolescents in general and non-existent in Norwegian populations specifically. The aim of the study was to examine whether body composition, muscular strength and cardiorespiratory fitness were associated with self-reported mental health in Norwegian adolescents. Methods Adolescents from four regions of Norway (n = 1486; mean age = 13.9; girls = 50.6%) participated. Self-reported mental health (psychological difficulties) was measured by completing the Strengths and Difficulties Questionnaire. Ca…
Additional file 4 of The effect of a school-based intervention on physical activity, cardiorespiratory fitness and muscle strength: the School in Mot…
2020
Additional file 4: Table 3. Mean (95% confidence interval) for cardiorespiratory fitness and muscle strength among participants stratified by study arm and gender at baseline and follow-up.
Additional file 1 of The effect of a school-based intervention on physical activity, cardiorespiratory fitness and muscle strength: the School in Mot…
2020
Additional file 1:. CONSORT 2010 checklist of information to include when reporting a randomised trial*.
Additional file 3 of The effect of a school-based intervention on physical activity, cardiorespiratory fitness and muscle strength: the School in Mot…
2020
Additional file 3: Table 2a. Mean (95% confidence interval) physical activity levels among girls stratified by study arm at baseline and follow-up. Table 2b. Mean (95% confidence interval) physical activity levels among boys stratified by study arm at baseline and follow-up.
Additional file 2 of The effect of a school-based intervention on physical activity, cardiorespiratory fitness and muscle strength: the School in Mot…
2020
Additional file 2:. The TIDieR (Template for Intervention Description and Replication) Checklist*.