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Träfflista för sökning "WFRF:(Johannesson Elias 1972) "

Sökning: WFRF:(Johannesson Elias 1972)

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  • Gripeteg, Lena, 1970, et al. (författare)
  • Concomitant Associations of Healthy Food Intake and Cardiorespiratory Fitness With Coronary Artery Calcium
  • 2018
  • Ingår i: American Journal of Cardiology. - 0002-9149 .- 1879-1913. ; 122:4, s. 560-564
  • Tidskriftsartikel (refereegranskat)abstract
    • Conflicting findings remain regarding associations between lifestyle behaviors and coronary artery calcium (CAC). We investigated concomitant associations of healthy food intake and cardiorespiratory fitness (CRF) with CAC. Data from 706 men and women 50 to 64 years old from the Swedish SCAPIS pilot trial were analyzed. A CAC score was calculated using the Agatston method. A Healthy Food Index (HFI) was established using data from a web-based food frequency questionnaire. CRF was assessed from a bike exercise test. Regression analyses were performed with occurrence of CAC (dichotomous) and level of CAC score in patients with CAC (continuous) as outcomes. 58% had 0 CAC score. HFI was significantly associated with having no CAC (standardized coefficient β = 0.18, p <0.001) but not with level of CAC score (β = −0.09, p = 0.34). CRF showed no significant association with having no CAC (β = −0.08, p = 0.12) or with the level of CAC score (β = −0.04, p = 0.64). However, there was an interaction between HFI and CRF (β = −0.23, p = 0.02); for increasing levels of CRF there was stronger negative association between HFI and level of CAC score, reaching β = −0.48, p = 0.045 for the highest CRF level. In conclusion, these results emphasize the importance of a healthy food intake in combination with higher CRF to counteract CAC development.
  • Arvidsson, Daniel, 1974, et al. (författare)
  • A Longitudinal Analysis of the Relationships of Physical Activity and Body Fat With Nerve Growth Factor and Brain-Derived Neural Factor in Children
  • 2018
  • Ingår i: Journal of Physical Activity & Health. - : Human Kinetics. - 1543-3080. ; 15:8, s. 620-625
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Nerve growth factor (NGF) and brain-derived neural factor (BDNF) are important for brain function and detectable in the blood. This study explored the longitudinal associations of physical activity and body fat with serum NGF and BDNF in children. Methods: Two waves of measurements were performed 2 years apart in 8- to 11-year-old children, including physical activity using the ActiGraph model 7164, body composition by dual-energy X-ray absorptiometry, and serum NGF and BDNF determined by multiplex immunoassay. The first wave included 248 children. Full information maximum likelihood estimation with robust standard errors was applied in structural equation modeling. Results: Vigorous physical activity showed a direct positive longitudinal relationship with NGF (standardized coefficient beta = 0.30, P = .01) but not with BDNF (beta = 0.04, P = .84). At the same time, body fat percentage was positively related to both NGF (beta = 0.59, P < .001) and BDNF (beta = 0.17, P = .04). There was an indication of an indirect relationship of vigorous physical activity with NGF (product of unstandardized coefficient beta = -0.18, P = .02) and BDNF (beta = -0.07, P = .05) through the negative relationship with body fat percentage (beta = -0.36, P < .001). Conclusions: Vigorous physical activity is directly related to serum NGF and indirectly through the level of body fat. The relationships with serum BDNF are more complex.
  • Johannesson, Elias, 1972 (författare)
  • The Dynamic Development of Cognitive and Socioemotional Traits and Their Effects on School Grades and Risk of Unemployment : A Test of the Investment Theory
  • 2017
  • Doktorsavhandling (övrigt vetenskapligt)abstract
    • The purpose of this thesis is to examine the dynamic development of cognitive and socioemotional traits and how these traits influence academic achievement and predict risk of unemployment. Data was retrieved from the Evaluation Through Following-up (ETF) database. The data consists of 9,080 students born in 1972, who answered a questionnaire and completed cognitive ability tests in 3rd and 6th grade. In addition, register-based data was used for students’ grades and for various background variables. All analyses were conducted using structural equation modelling (SEM). The dynamic development of the relationships between cognitive and socioemotional traits between 3rd and 6th grade is driven by cognitive ability factors. Support was found for Cattell’s investment hypothesis, which states that fluid cognitive ability (Gf) influences development of crystallized cognitive ability (Gc). No influence of socioemotional traits on either cognitive traits or socioemotional traits was found. The evidence of a Gc reading achievement trait complex was weak. Furthermore, both cognitive and socioemotional traits are related to academic achievement. In the prediction of unemployment risk, effects of almost all cognitive and socioemotional traits are captured by grades. Gc has both a direct effect on unemployment risk and an indirect effect via grades on unemployment risk. All other effects of socioemotional traits and Gf are related to the risk of unemployment via academic achievement. The strongest determinant of unemployment risk is academic achievement, which has a protective effect on the risk of unemployment.
  • Lundberg Zachrisson, Andreas, 1987, et al. (författare)
  • Overuse injuries in Swedish elite athletics–a study protocol for a prospective multifactorial cohort study
  • 2018
  • Ingår i: BMC Musculoskeletal Disorders. - 1471-2474. ; 19, s. 1-12
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Overuse injuries (OI) are common in elite athletics. Previous studies have had athletes self-report injuries rather than having a medical professional provide a clear diagnosis. This might be a major reason for the inconsistencies in reported incident proportions of OI in elite athletics, in addition to the varying definitions of OI in current literature. Risk factors or combinations of risk factors (biomechanical, clinical, and training-related) have been shown to be important in the developmental process of OI. However, no studies have examined these relationships using a multifactorial and prospective approach in elite athletics. The purpose of this study protocol is to describe OI incidence proportion, injury severity, location, and occurrence during a complete athletics season. Moreover, possible discipline specific and injury specific risk factors that might be associated with OI will be examined. Methods: This study will be an explorative prospective cohort study including approximately 120 elite athletes. All athletes will be screened twice during one complete athletics season. The screening will consist of a body composition scan to measure muscle mass, fat free mass, lean mass, bone density, and bone mineral content. In addition, clinical examination will measure range of motion for the lower back, hip, knee, shoulder, and elbow and ankle joints. A running analysis will measure the 3D motions of the hip, knee, and ankle joints. Finally, maximal isometric strength tests of the main core and lower extremity muscles will be carried out. To record injuries, each athlete will consult a physiotherapist or sports medicine doctor affiliated with the study to get a clear diagnosis. Injury data will be recorded according to the previously published athletics consensus statement. Discussion: Results from this study protocol will contribute more insight and detailed knowledge regarding the extent of OI occurrence among elite athletes during a complete athletics season. It will also provide further insights into which risk factors are associated with the development of OI in elite athletics.
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