Browsing USN Open Archive by Author "Johansen, Jan-Michael"
Now showing items 1-10 of 10
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Aerobic and anaerobic speed predicts 800-m running performance in young recreational runners
Støren, Øyvind; Helgerud, Jan; Johansen, Jan-Michael; Gjerløw, Lars Erik; Aamlid, Aanund; Støa, Eva Maria (Peer reviewed; Journal article, 2021)The main aim was to investigate the impact of maximal aerobic speed (MAS), maximal anaerobic speed (MANS), and time to exhaustion (TTE) at 130% MAS, on 800-m running time performance (800TT). A second aim was to investigate ... -
Effects of individual changes in training distribution on maximal aerobic capacity in well-trained cross-country skiers: A follow-up study
Johansen, Jan-Michael; Sunde, Arnstein; Helgerud, Jan; Gjerløw, Lars Erik; Støren, Øyvind (Peer reviewed; Journal article, 2021)The purpose of this study was to evaluate individual changes in training distribution and the subsequent effects on maximal oxygen uptake (VO2max). The participants were well-trained cross-country skiers who had performed ... -
Effects of training, age, gender and selected genes on aerobic endurance performance in cross-country skiing
Johansen, Jan-Michael (Doctoral dissertations at the University of South-Eastern Norway;91, Doctoral thesis, 2021-04-22)The main objective of this thesis was to investigate the effects of training, age, gender and selected genetic variants on aerobic endurance performance and training adaptations in well-trained cross-country skiers. The ... -
Fysiologiske prestasjonsbestemmende faktorer i langrenn
Johansen, Jan-Michael (Master thesis, 2016)Formål: Målet for den foreliggende studien var å undersøke potensielle sammenhenger mellom fysiologiske og antropometriske variabler, og en kontrollert prestasjonstest på rulleski blant en gruppe aktive juniorlangrennsløpere. ... -
Improving Utilization of Maximal Oxygen Uptake and Work Economy in Recreational Cross-Country Skiers With High-Intensity Double-Poling Intervals
Johansen, Jan-Michael; Eriksen, Sondre; Sunde, Arnstein; Slettemeås, Øystein; Helgerud, Jan; Støren, Øyvind (Journal article; Peer reviewed, 2020)Purpose: To investigate the effect of a double-poling (DP) high-intensity aerobic interval-training (HIT) intervention performed without increasing total HIT volume. This means that regular HIT training (eg, running) was ... -
Large estimate variations in assessed energy expenditure and physical activity levels during active virtual reality gaming: a short report
Johansen, Jan-Michael; Schutte, Kjartan; Bratland-Sanda, Solfrid (Journal article; Peer reviewed, 2023)The purpose of the study was to compare methods for estimating energy expenditure (EE) and physical activity (PA) intensity during a 30 min session of active virtual reality (VR) gaming. Eight individuals (age = 25.4 ± 2.0 ... -
No change – no gain; The effect of age, sex, selected genes and training on physiological and performance adaptations in cross-country skiing
Johansen, Jan-Michael; Goleva-Fjellet, Sannija; Sunde, Arnstein; Gjerløw, Lars Erik; Skeimo, Lars Arne Fostvedt; Freberg, Baard Ingegerdsson; Sæbø, Mona; Helgerud, Jan; Støren, Øyvind (Peer reviewed; Journal article, 2020)The aim was to investigate the effect of training, sex, age and selected genes on physiological and performance variables and adaptations before, and during 6 months of training in well-trained cross-country skiers. ... -
Relationships Between Maximal Aerobic Speed, Lactate Threshold, and Double Poling Velocity at Lactate Threshold in Cross-Country Skiers
Johansen, Jan-Michael; Sunde, Arnstein; Helgerud, Jan; Støren, Øyvind (Peer reviewed; Journal article, 2022)Purpose: To investigate the relationships between maximal aerobic speed (MAS), lactate threshold in per cent of peak oxygen uptake (LT) and velocity at LT (LTv) in cross-country skiers. Secondly, we aimed to explore the ... -
Stronger Is Better: The Impact of Upper Body Strength in Double Poling Performance
Sunde, Arnstein; Johansen, Jan-Michael; Gjøra, Martin; Paulsen, Gøran; Bråten, Morten; Helgerud, Jan; Støren, Øyvind (Journal article; Peer reviewed, 2019)The purpose of the present study was to compare time results from a roller-skiing double poling (DP) time trial with different physiological variables, muscular strength variables, and DP characteristics in both male and ... -
VR og Fysisk aktivitet - Energiforbruk og intensitet under en økt med VR-spill
Schutte, Kjartan van der Iest (Master thesis, 2021)Formål: Formålet med studien var å kartlegge energiforbruk og intensitet under en VR økt, og om VR-spilling kan brukes som en aktivitet for å imøtekomme de nasjonale anbefalingene for fysisk aktivitet fra Helsedirektoratet. ...