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    • The Olympic biathlon - Recent advances and perspectives after pyeongchang 

      Laaksonen, Marko S; Jonsson, Malin; Holmberg, Hans-Christer (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-02)
      The biathlon, combining cross-country ski skating with rifle marksmanship, has been an Olympic event since the Winter Games in Squaw Valley, United States, in 1960. As a consequence of replacing the classical with the skating technique in the 1980s, as well as considerable improvements in equipment and preparation of ski tracks and more effective training, the average biathlon skiing speed has ...

    • Pacing and predictors of performance during cross-country skiing races: A systematic review 

      Stöggl, Thomas; Pellegrini, Barbara; Holmberg, Hans-Christer (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-15)
      <i>Background</i>: Cross-country skiing (XCS) racing, a popular international winter sport, is complex and challenging from physical, technical, and tactical perspectives. Despite the vast amount of research focusing on this sport, no review has yet addressed the pacing strategies of elite XCS racers or the factors that influence their performance. The aim was to review the scientific literature ...

    • The pacing strategy and technique of male cross-country skiers With different levels of performance during a 15-km classical race 

      Welde, Boye; Stöggl, Thomas; Mathisen, Gunnar; Supej, Matej; Zoppirolli, Chiara; Winther, Andreas Kjæreng; Pellegrini, Barbara; Holmberg, Hans-Christer (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-08)
      In this study the pacing strategy, cycle characteristics and choice of technique of elite male cross-country (XC) skiers during a three-lap, 15-km classical race with interval start were measured. During the Norwegian Championships in 2016, fast (n = 18, age: 26±4 yr; height: 182±4 cm; body mass: 78±3 kg (means±SD)) and slow skiers (n = 18, age: 22±2 yr; height: 183±5 cm; body mass: 78±6 kg) were ...

    • Pacing Strategy in Long Distance Cross-Country Skiing. A study looking at female and male cross-country skiers at different performance level and how the track topography may influence their pacing strategy. 

      Bjørkesett, Eva (Master thesis; Mastergradsoppgave, 2019-05-14)
      Bakgrunn: Løpsutviklingen som utholdenhetsidretter har stor innflytelse på prestasjonen. Selv om flere studier har undersøkt løpsutvikling i flere idretter, er det lite informasjon om løpsutviklingen til langdistanse langrennsløpere, og for begge kjønn. Denne masteroppgaven undersøker hva slags løpsutviklingen utøverne adapterer i et langdistanseløp, og om ulike terreng vil påvirke deres løpsutvikling. ...

    • På vei ut eller inn? En studie av aktivitetsmønster, aktivitetsnivå og fysisk form blant 6, 9 og 15 åringer i 4 samiske majoritetskommuner i Finnmark 

      Johansen, Svenn (Master thesis; Mastergradsoppgave, 2015-05-15)
      Sammendrag På vei ut eller inn? En studie av aktivitetsmønster, aktivitetsnivå og fysisk form blant 6, 9 og 15 åringer i 4 samiske majoritetskommuner i Finnmark. Mål med studiet: Formålet med studien var å fremskaffe kunnskap om det fysiske aktivitetsnivået, aktivitetsmønster, organisasjonsgrad, skolevei og BMI-verdier til barn og unge i samiske majoritetskommuner. Gruppen som ble undersøkt var ...

    • Physical Activity and Quality of Life among Substance Use Disorder Patients – An Observational Pilot study 

      Johnsen, Eirik Inge (Master thesis; Mastergradsoppgave, 2023-05-14)
      <p>Introduction: Substance abuse is a global health concern that affects individuals, families, and communities worldwide. Regular and sufficient physical activity (PA) has proven to have a positive effect on key elements in substance use disorder (SUD) treatment. The aim of this study was to examine participation in PA and the association of PA with health-related physical fitness, and quality of ...

    • Physical activity, resting heart rate, and atrial fibrillation: the Tromsø Study 

      Morseth, Bente; Graff-Iversen, Sidsel; Jacobsen, Bjarne K.; Jørgensen, Lone; Nyrnes, Audhild; Thelle, Dag Steinar; Vestergaard, Peter; Løchen, Maja-Lisa (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-10)
      Aims: The objective was to examine the association of physical activity and resting heart rate (RHR) with hospital-diagnosed atrial fibrillation (AF) in a Norwegian cohort. <p> Methods and Results: This prospective study included 20 484 adults (50.3% men) who participated in the third Tromsø Study survey in 1986-1987. At baseline, physical activity was assessed by a validated questionnaire, and ...

    • Physiological Comparisons of Elite Male Visma Ski Classics and National Level Cross-Country Skiers During Uphill Treadmill Roller Skiing 

      Sagelv, Edvard Hamnvik; Engseth, Tina; Pedersen, Sigurd; Pettersen, Svein Arne; Mathisen, Gunnar; Heitmann, Kim Arne; Welde, Boye; Thomassen, Tor Oskar; Stoggl, Thomas Leonhard (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-16)
      Longer distance cross-country ski (14–220 km) races such as the Visma Ski Classics (VSC) has recently gained attention in addition to the traditional Olympic distances (5–50 km) associated with cross-country (XC) skiing. These long-distance races are characterized by extensive use of the upper body while double poling (DP). While there is a substantial amount of research on Olympic distance XC skiing, ...

    • The physiological mechanisms of performance enhancement with sprint interval training differ between the upper and lower extremities in humans 

      Zinner, Christoph; Morales-Alamo, David; Ørtenblad, Niels; Larsen, Filip J; Schiffer, Tomas A; Willis, Sarah J; Gelabert-Rebato, Miriam; Perez-Valera, Mario; Boushel, Robert; Calbet, Jose AL; Holmberg, Hans-Christer (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-30)
      To elucidate the mechanisms underlying the differences in adaptation of arm and leg muscles to sprint training, over a period of 11 days 16 untrained men performed six sessions of 4–6 × 30-s all-out sprints (SIT) with the legs and arms, separately, with a 1-h interval of recovery. Limb-specific VO2peak, sprint performance (two 30-s Wingate tests with 4-min recovery), muscle efficiency and ...

    • Position specific player load during match-play in a professional football club 

      Baptista, Ivan; Johansen, Dag; Seabra, André; Pettersen, Svein Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-24)
      There is a rapid growing body of knowledge regarding physical aspects of a football match due to studies using computer-assisted motion analysis. The present study used time-motion analysis and triaxial-accelerometers to obtain new insights about differences in physical profiles of elite football players across playing-positions. Player performance data in 23 official home matches from a professional ...

    • The Potential Usefulness of Virtual Reality Systems for Athletes: A Short SWOT Analysis 

      Düking, Peter; Holmberg, Hans-Christer; Sperlich, Billy (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-05)
      Virtual reality (VR) systems (Neumann et al., 2017), which are currently receiving considerable attention from athletes, create a two- or three-dimensional environment in the form of emulated pictures and/or video-recordings where in addition to being mentally present, the athlete even often feels like he/she is there physically as well. As she/he interacts with and/or reacts to this environment, ...

    • Prevalence of menstrual cycle disturbances and hormonal contraception use in Norwegian women of differing activity levels: a part of the FENDURA project 

      Storvand, Jonas Haugmo (Master thesis; Mastergradsoppgave, 2023-05-15)
      <p>Background: A lack of research on female exercise physiology and sports psychology has resulted in considerable knowledge gaps regarding the optimal training methods and recommendations for the female athletic population, as current evidence is based primarily on research dominated by male participants. In order to conduct relevant and applicable research on the athletic female population, ...

    • Prolonged sitting interrupted by 6-min of high-intensity exercise: Circulatory, metabolic, hormonal, thermal, cognitive, and perceptual responses 

      Sperlich, Billy; De Clerck, Ine; Zinner, Christoph; Holmberg, Hans-Christer; Wallmann-Sperlich, Birgit (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-16)
      The aim was to examine certain aspects of circulatory, metabolic, hormonal, thermoregulatory, cognitive, and perceptual responses while sitting following a brief session of high-intensity interval exercise. Twelve students (five men; age, 22 ± 2 years) performed two trials involving either simply sitting for 180 min (SIT) or sitting for this same period with a 6-min session of high-intensity ...

    • Quantified Soccer Using Positional Data: A Case Study 

      Pettersen, Svein Arne; Johansen, Håvard D.; Baptista, Ivan; Halvorsen, Pål; Johansen, Dag (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-06)
      Performance development in international soccer is undergoing a silent revolution fueled by the rapidly increasing availability of athlete quantification data and advanced analytics. Objective performance data from teams and individual players are increasingly being collected automatically during practices and more recently also in matches after FIFA's 2015 approval of wearables in electronic ...

    • Recommendations for assessment of the reliability, sensitivity, and validity of data provided by wearable sensors designed for monitoring physical activity 

      Düking, Peter; Fuss, Franz Konstantin; Holmberg, Hans-Christer; Sperlich, Billy (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-30)
      Although it is becoming increasingly popular to monitor parameters related to training, recovery, and health with wearable sensor technology (wearables), scientific evaluation of the reliability, sensitivity, and validity of such data is limited and, where available, has involved a wide variety of approaches. To improve the trustworthiness of data collected by wearables and facilitate comparisons, ...

    • Resource rent in aquaculture 

      Flaaten, Ola; Pham, Thi Thanh Thuy (Chapter; Bokkapittel, 2019)
      Resource rent in aquaculture (RRA) is any payment to a farm and site owner, on land or sea, in excess of the costs needed to bring that farm into production. For analytic and policy purposes it may be useful to distinguish among different types of RRA. Three types will be discussed: rent associated with the classical economists Ricardo (1821) and Faustmann (1849), as well as oligopoly rent from ...

    • The Responses of Elite Athletes to Exercise: An All-Day, 24-h Integrative View Is Required! 

      Sperlich, Billy; Holmberg, Hans-Christer (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-14)
      The current research topics in Frontiers of Physiology include “Training intensity, volume and recovery distribution among elite and recreational endura nce athletes” (Frontiers in Physiology, 2016) and “Wearable Sensor Technology for Monitoring Training Load and Health in the Athletic Population” (Frontiers in Physiology, 2017). As editors of both of these topics, we would like to share some ...

    • Sammenheng mellom kroppssammensetning, toppfart og høyintensive løp i kamp hos profesjonelle fotballspillere. 

      Wilsgård, Kevin (Master thesis; Mastergradsoppgave, 2020-05-15)
      Studiet undersøker forholdet mellom topphastighet i kamp og kroppssammensetningen hos eliteseriespillere i fotball. (N=22), Alder 24,4 ± 4,57, Høyde 181,8 ± 6,2, vekt 76,7 ± 7,4, FFM 64,625 ± 70, KF % 12 ± 2,19, Toppfart 31,3 ± 1,4 km/t (N=20). Hensikten med studiet var å undersøke om fettfri masse og fettprosent har en sammenheng med toppfart (høyest oppnådd fart i sesong) hos et eliteserielag i ...

    • Sammenhengen mellom kampresultat og fysisk prestasjonsevne i elitefotball 

      Nilsen, Joakim Amandus (Master thesis; Mastergradsoppgave, 2021-05-11)
      Introduksjon: Det scores flest mål i elitefotball i løpet av de siste 15 minuttene. Det kan være forklart med mer tretthet i løpet av kampen og derfor være påvirket av fysisk prestasjonsevne hos fotballspillere. Hensikten med denne studien var å undersøke forskjeller i høyhastighetsløp (HIR) og sprintdistanse (S), totale distanse (TD), og akselerasjonsaksjoner (ACC + -) i kamper som ender med seier, ...

    • Sammenhengen mellom motivasjonsklima og motivasjon blant kvinnelige fotballspillere i Norge 

      Flovik, Hanna Tønsvoll (Master thesis; Mastergradsoppgave, 2022-05-14)
      Formålet med denne oppgaven var å utforske sammenhengen mellom motivasjonsklima og motivasjon blant kvinnelige fotballspillere på de to øverste nivåene i Norge. I tillegg var hensikten å undersøke om en eventuell sammenheng mellom motivasjonsklima og motivasjon varierte mellom nivåene i utvalget. Metoden som ble brukt var kvantitativ metode. Studien var en del av et større forskningsprosjekt ved ...