Bjørn Tore Johansen

Participation in organized sports is associated with decreased likelihood of unhealthy lifestyle habits in adolescents

Adolescence is a pivotal time for investing in both present and future health. Thus, it is important to identify arenas for promoting positive adolescent health behaviors and preventing negative ones. The aim of this study was to investigate the associations between organized sports participation (OSP) and a broad range of lifestyle habits in Norwegian adolescents. A comprehensive survey was completed by 13 269 junior high and high school students in southern Norway. Multivariable binary logistic regression models, adjusted for gender, age, and parental education, were used to investigate the associations between OSP and adolescent substance use, dietary habits, physical activity level, passive vs active transportation, screen time, and sleep duration. Inverse associations were found between OSP and adolescent substance use (odds ratio 0.40 [95% confidence interval 0.30‐0.52] to 0.68 [0.61‐0.76]), irregular consumption of main meals (0.58 [0.53‐0.63] to 0.78 [0.70‐0.89]), high intake of unhealthy food and beverages (0.55 [0.47‐0.65] to 0.86 [0.75‐0.98]), low intake of healthy food items (0.57 [0.51‐0.63] to 0.77 [0.70‐0.84]), low physical activity level (0.15 [0.14‐0.17]), high screen‐based activity (0.61 [0.55‐0.67]), passive vs active transportation (summer; 0.79 [0.72‐0.86] and winter; 0.84 [0.77‐0.92]), and short sleep duration, during both weekdays (0.57 [0.52‐0.63]) and weekends (0.79 [0.69‐0.89]). In conclusion, adolescents participating in organized sports had decreased odds for engaging in several unhealthy lifestyle habits compared with non‐participants, indicating that organized sports may be a relevant setting for promoting healthy behaviors among adolescents. Future studies are, however, needed to confirm a possible causal relationship.

Referee efficacy in the context of Norwegian soccer referees – A meaningful construct?

Objectives: The purpose of this study was two‐fold. Firstly, to examine the measurement/factorial validity and invariance of the Referee Self‐Efficacy Scale (REFS) among Norwegian soccer referees. Secondly, extending scale validation, we also tested a structural model in which a second‐order version of the REFS was modelled to mediate a set of theoretically informed antecedents and outcomes. Design: Cross‐sectional. Method: One hundred and eleven Norwegian elite referees and 81 non‐elite referees completed an electronic questionnaire measuring expected antecedents and outcomes of perceived self‐efficacy in the role as referees. Results: Analyses provided support for the first – and second order versions of the REFS scale as well as for scale invariance. Further, a task goal and experience as referee related positively to referee positive affect, mediated by referee efficacy. Unexpectedly, physical preparation related directly to positive affect, whereas no mediation effects or direct effects for mental preparation and ego goal were observed. Conclusions: Measurement/factorial validity and invariance of the REFS were fully supported. Validity of the scale in mediation model by Guillén and Feltz (2011) was only partly supported. HighlightsTesting the factorial validity and invariance of the Norwegian REFS scale.Cross‐sectional study using latent variable modeling.Support for validity and invariance of the referee efficacy scale.REFS mediated years of experience and task orientation on positive affect.

Childhood football play and practice in relation to self-regulation and national team selection; a study of Norwegian elite youth players

ABSTRACT Childhood sport participation is argued to be important to understand differences in self-regulation and performance level in adolescence. This study sought to investigate if football-specific activities in childhood (6–12 years of age) is related to self-regulatory skills and national under 14- and 15-team selection in Norwegian elite youth football. Data of practice histories and self-regulatory skills of 515 youth football players selected at Norwegian regional level were collected and further analysed using multilevel analyses. The results revealed that high self-regulated players were more likely to be selected for national initiatives, and increased their involvement in peer-led football practice and adult-led football practice during childhood, compared to players with lower levels of self-regulation. While national level players reported higher levels of peer-led football play in childhood, the interaction effect suggest that the regional level players increased their involvement in peer-led play during childhood compared to national level players. In conclusion, the findings indicate that childhood sport participation may contribute to later differences in self-regulation, and highlights the importance of childhood engagement in football-specific play and practice in the development of Norwegian youth football players.

Difference in physical fitness in children with initially high and low gross motor competence: A ten-year follow-up study

The aim of the study was to investigate the difference in relative physical fitness between children with initially high and low gross motor competence in a ten-year prospective study. A sample of 49 children from a local primary school was tested on gross motor competence and physical fitness in 1st grade (5/6 years old). The children were tested again in 2nd (motor competence only), 7th, and 10th grade (15/16 years old). The sample was divided into two groups; initially high and low gross motor competence, according to score (median-split) on the Körperkoordinationstest für Kinder-test battery in 1st grade. Results suggested that the initially high gross motor competence-group performed significantly better on a multidimensional physical fitness test, compared to the initially low gross motor competence-group at all time-points. There were also statistically significant differences between the groups in gross motor competence in 7th and 10th grade, with the initially high gross motor competence-group scoring most favorable. The findings from the present study highlight the importance of identifying and supporting young individuals with low gross motor competence, to prevent low levels of physical fitness in the future.