Browsing Bergen Open Research Archive by Author "Kristoffersen, Morten"
Now showing items 1-7 of 7
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Associations between biological maturity level, match locomotion, and physical capacities in youth male soccer players
Gundersen, Hilde; Riiser, Amund; Algrøy, Erling Andre; Vestbøstad, Mona; Sæterbakken, Atle Hole; Clemm, Hege Synnøve Havstad; Grendstad, Halvard; Hafstad, Arild; Kristoffersen, Morten; Rygh, Cecilie Brekke (Journal article; Peer reviewed, 2022)Introduction: Biological maturity level has shown to affect sport performance in youths. However, most previous studies have used noninvasive methods to estimate maturity level. Thus, the main aim of the present study was ... -
Cardiorespiratory fitness is associated with selective attention and inhibitory control in healthy male high-school students
Wengaard, Eivind Johannessen; Kristoffersen, Morten; Harris, Anette; Gundersen, Hilde (Peer reviewed; Journal article, 2017-06-28)Background: Previous studies have shown associations of physical fitness and cognition in children and in younger and older adults. However, knowledge about associations in high-school adolescents and young adults is sparse. ... -
Evaluating the suitability of the Low Energy Availability in Females Questionnaire (LEAF-Q) for female footballers
Dasa, Marcus Småvik; Friborg, Oddgeir; Kristoffersen, Morten; Pettersen, Gunn; Sagen, Jørn Vegard; Sundgot-Borgen, Jorunn; Rosenvinge, Jan H (Journal article; Peer reviewed, 2023)Background The Low Energy Availability in Females Questionnaire (LEAF-Q) is a screening tool developed to detect endurance athletes and dancers at risk for development of persistent low energy availability (LEA) and the ... -
The Female Menstrual Cycles Effect on Strength and Power Parameters in High-Level Female Team Athletes
Småvik Dasa, Marcus; Kristoffersen, Morten; Ersvær, Elisabeth; Bovim, Lars Peder Vatshelle; Bjørkhaug, Lise; Moe-Nilssen, Rolf; Sagen, Jørn Vegard; Haukenes, Inger (Journal article; Peer reviewed, 2021)Purpose: The female menstrual cycle (MC) is characterized by hormonal fluctuations throughout its different phases. However, research regarding its effect on athletic performance in high level athletes is sparse. The aim ... -
Performance in youth track and field is associated with birth quartile. A register-based study among athletes in Norway from 10 years to senior level
Gundersen, Hilde; Harris, Anette Kristoffersen; Grendstad, Halvard; Kristoffersen, Morten; Guttormsen, Atle; Dalen, Terje; Rygh, Cecilie Brekke (Journal article; Peer reviewed, 2022)Introduction Earlier studies have demonstrated that the oldest in a competition class are more likely to succeed than the youngest, a phenomenon called relative age effect (RAE). Track and field give us an opportunity to ... -
Risk and prevalence of Relative Energy Deficiency in Sport (REDs) among professional female football players
Dasa, Marcus Småvik; Friborg, Oddgeir; Kristoffersen, Morten; Pettersen, Gunn; Sagen, Jørn Vegard; Torstveit, Monica Klungland; Sundgot-Borgen, Jorunn; Rosenvinge, Jan Harald (Journal article; Peer reviewed, 2024)A high prevalence of low energy availability (LEA) has been reported in femalefootball players. This is of concern as problematic LEA may evolve into a syndromicpattern known as relative energy deficiency in sport (REDs). ... -
Study protocol: Prevalence of low energy availability and its relation to health and performance among female football players
Rosenvinge, Jan H; Dasa, Marcus Småvik; Kristoffersen, Morten; Pettersen, Gunn; Sundgot-Borgen, Jorunn; Sagen, Jørn Vegard; Friborg, Oddgeir (Journal article; Peer reviewed, 2022)Enduring low energy availability (LEA) is associated with several potentially serious physiological and mental conditions. LEA has been found highly prevalent among female elite athletes within endurance sports, thus ...