Browsing Brage NIH by Author "Ivarsson, Andreas"
Now showing items 1-20 of 22
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A Cluster-Randomized Controlled Trial to Increase Youth Ice Hockey Coaches’ Beliefs and Use of Need-Supportive Styles
Bengtsson, Dennis; Stenling, Andreas; Nygren, Jens; Ntoumanis, Nikos; Ivarsson, Andreas (Peer reviewed; Journal article, 2024)Few educational programs to nurture coach need-supportive behaviors have been delivered by sport governing bodies (Evans et al., 2015). Consequently, the potential for such programs to meaningfully change coaches’ interpersonal ... -
Assessing the individual relationships between physical test improvements and external load match parameters in male professional football players: A brief report
Byrkjedal, Per Thomas; Bjørnsen, Thomas; Luteberget, Live Steinnes; Ivarsson, Andreas; Spencer, Matthew (Peer reviewed; Journal article, 2024)Purpose: This study aimed to explore whether a meaningful improvement in physical performance following an in-season strength training intervention can be related to external load match parameters at an individual level ... -
Association Between Physical Performance Tests and External Load During Scrimmages in Highly Trained Youth Ice Hockey Players
Byrkjedal, Per Thomas; Bjørnsen, Thomas; Luteberget, Live; Lindberg, Kolbjørn Andreas; Ivarsson, Andreas; Haukali, Eirik; Spencer, Matthew (Peer reviewed; Journal article, 2023)Purpose: To investigate the relationship between physical performance tests and on-ice external load from simulated games (scrimmages) in ice hockey. Methods: A total of 14 players completed a physical performance test ... -
Examination of the validity of the Injury-Psychological Readiness to Return to Sport (I-PRRS) scale in male professional football players: A worldwide study of 29 professional teams
Dunlop, Gordon; Ivarsson, Andreas; Andersen, Thor Einar; Brown, Susan; O’Driscoll, Gary; Lewin, Colin; Dupont, Gregory; Ardern, Clare L.; Delecroix, Barthelemy; Podlog, Leslie; McCall, Alan (Peer reviewed; Journal article, 2024)Perceived confidence is an important dimension of an athlete’s psychological readiness to return-to-play. However, there is no established and validated tool to evaluate confidence in professional football. This study aimed ... -
Global self-worth among adolescents: The role of basic psychological need satisfaction in physical education
Erdvik, Irina Burchard; Haugen, Tommy; Ivarsson, Andreas; Säfvenbom, Reidar (Peer reviewed; Journal article, 2019)Global self-worth is important for healthy development and learning, and is therefore highlighted as a major aim in the Norwegian physical education (PE) curriculum. Based on prior research this study aimed to assess ... -
The healthy body image intervention and reduction in eating disorder symptomatology and muscle building supplement use in high school students: A study of mediating factors
Svantorp-Tveiten, Kethe Marie Engen; Ivarsson, Andreas; Torstveit, Monica Klungland; Sundgot-Borgen, Christine; Mathisen, Therese Fostervold; Bratland-Sanda, Solfrid; Friborg, Oddgeir; Pettersen, Gunn; Sundgot-Borgen, Jorunn; Rosenvinge, Jan Harald (Peer reviewed; Journal article, 2022)Background: Mediation analysis is important to test the theoretical framework underpinning an intervention. We therefore aimed to investigate if the healthy body image (HBI) intervention’s effect on eating disorder (ED) ... -
In-season autoregulation of one weekly strength training session maintains physical and external load match performance in professional male football players
Byrkjedal, Per Thomas; Thunshelle, Atle; Spencer, Matthew; Luteberget, Live Steinnes; Ivarsson, Andreas; Vårvik, Fredrik Tonstad; Lindberg, Kolbjørn Andreas; Bjørnsen, Thomas (Peer reviewed; Journal article, 2023)The aim of this study was to compare the effects of autoregulating strength training volume based on an objective (external load match performance) versus a subjective (self-selected) method in professional male football ... -
Longitudinal associations between perceived programme quality, basic needs support and basic needs satisfaction within youth sport: A person-centred approach
Bean, Corliss; Solstad, Bård Erlend; Ivarsson, Andreas; Forneris, Tanya (Peer reviewed; Journal article, 2018)Acknowledging the importance of longitudinal data to test process-based psychological theories of motivation is critical. The purpose of this study was to use a person-centred approach to identify unique subgroups (i.e. ... -
Longitudinal relations between needs satisfaction and physical activity among psychiatric patients with dual diagnoses
Bentzen, Marte; Farholm, Anders; Ivarsson, Andreas; Sørensen, Marit (Peer reviewed; Journal article, 2021)Objectives: Studies including people with severe mental illness (SMI) have reported beneficial effects from physical activity (PA) on psychiatric symptoms, quality of life, and global functioning. However, it is important ... -
Mental health among elite athletes in Norway during a selected period of the COVID-19 pandemic
Pensgaard, Anne Marte; Øvrebø, Tom Henning; Ivarsson, Andreas (Peer reviewed; Journal article, 2021)Objective: To investigate the prevalence of mental health problems and satisfaction with life among different groups of elite athletes during a selected period of the COVID-19 pandemic and examine how COVID-19 related ... -
Mental health problems in elite sport: The difference in the distribution of mental distress and mental disorders among a sample of Norwegian elite athletes
Øvrebø, Tom Henning; Ivarsson, Andreas; Sundgot-Borgen, Jorunn; Knudsen, Ann Kristin Skrindo; Reneflot, Anne; Pensgaard, Anne Marte (Peer reviewed; Journal article, 2023)Objectives: To, based on diagnostic interviews, investigate the distribution of mental disorders among a sample of Norwegian elite athletes with ‘at-risk scores’ on a self-report questionnaire measuring symptoms of mental ... -
Mindfulness and shooting performance in biathlon. A prospective study
Josefsson, Torbjörn; Gustafsson, Henrik; Rostad, Trym Iversen; Gardner, Frank L.; Ivarsson, Andreas (Peer reviewed; Journal article, 2020)The aim of the study was to examine the temporal relationship between facets of sport-specific dispositional mindfulness (i e., Awareness, Refocusing, Nonjudgemental attitude) and shooting performance in actual competitions, ... -
Motivational processes affecting the perception of organizational and media stressors among professional football players: A longitudinal mixed methods research study
Kristiansen, Elsa; Ivarsson, Andreas; Solstad, Bård Erlend; Roberts, Glyn (Peer reviewed; Journal article, 2019)Objectives: The purpose of this study was to examine professional football players’ perceptions of organizational and media stressors over a season using Achievement Goal Theory (AGT) as the overarching motivational ... -
Psychosocial predictors of drop-out from organised sport: A prospective study in adolescent soccer
Back, Jenny; Stenling, Andreas; Solstad, Bård Erlend; Svedberg, Petra; Johnson, Urban; Ntoumanis, Nikos; Gustafsson, Henrik; Ivarsson, Andreas (Peer reviewed; Journal article, 2022)In recent years an increased drop-out rate in adolescents’ soccer participation has been observed. Given the potentially adverse consequences of drop-out from soccer, more information about risk factors for drop-out is ... -
Psychosocial stress factors, including the relationship with the coach, and their influence on acute and overuse injury risk in elite female football players
Pensgaard, Anne Marte; Ivarsson, Andreas; Nilstad, Agnethe; Solstad, Bård Erlend; Steffen, Kathrin (Journal article; Peer reviewed, 2018)Background: The relationship between specific types of stressors (eg, teammates, coach) and acute versus overuse injuries is not well understood. Objective: To examine the roles of different types of stressors as well as ... -
Scanning, contextual factors, and association with performance in English Premier League footballers: An investigation across a season
Jordet, Geir; Aksum, Karl Marius; Pedersen, Daniel Nordheim; Walvekar, Anup; Trivedi, Arjav; McCall, Alan; Ivarsson, Andreas; Priestley, David (Peer reviewed; Journal article, 2020)Scanning in football (soccer) denotes an active head movement where a player’s face is temporarily directed away from the ball to gather information in preparation for subsequently engaging with the ball. The aim of this ... -
School-based physical activity in relation to active travel: A cluster randomized controlled trial among adolescents enrolled in the school in motion study in Norway
Malnes, Lena Hansen; Berntsen, Sveinung; Kolle, Elin; Ivarsson, Andreas; Dyrstad, Sindre Mikal; Resaland, Geir Kåre; Solberg, Runar Barstad; Haugen, Tommy (Peer reviewed; Journal article, 2023)Background: Active travel and school settings are considered ideal for promoting physical activity. However, previous research suggests limited effect of school-based interventions on overall physical activity levels among ... -
Simulated game-based ice hockey match design (scrimmage) elicits greater intensity in external load parameters compared with official matches
Byrkjedal, Per Thomas; Bjørnsen, Thomas; Ivarsson, Andreas; Spencer, Matthew; Luteberget, Live Steinnes (Peer reviewed; Journal article, 2022)Objective: A limited number of studies have explored the external load experienced in indoor sports such as ice hockey, and few the link between training and match performance. As a paucity exists within this topic, this ... -
The Temporal Ordering of Motivation and Self-Control: A Cross-Lagged Effects Model
Jordalen, Gro; Lemyre, Nicolas; Durand-Bush, Natalie; Ivarsson, Andreas (Peer reviewed; Journal article, 2020)Mechanisms leading to cognitive energy depletion in performance settings such as high-level sports highlight likely associations between individuals’ self-control capacity and their motivation. Investigating the temporal ... -
The temporal relations of adolescents' basic need satisfaction in physical education and global self-worth
Erdvik, Irina Burchard; Haugen, Tommy; Ivarsson, Andreas; Säfvenbom, Reidar (Peer reviewed; Journal article, 2020)This study investigated the temporal relations of adolescents’ basic need satisfaction in physical education (PE) and global self-worth in a sample of 3,398 lower and upper secondary school students (49% boys, 51% girls, ...