Blar i forfatter Idrettshøgskolen "Welde, Boye"

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    • Absentee rates in physical education in high schools: The importance of gender and study programmes 

      Lagestad, Pål Arild; Welde, Boye; Rånes, Vebjørn; Myhre, Hege (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-02)
      Little is known about absenteeism in high school physical education (PE) in relation to study programme and gender. This study investigated the impact of gender and study programme on absentee rates in PE by analyzing data, using non-parametric statistical analyses, from the absentee registers for all 6928 students in Nordland Country. The results showed that the absentee rates in PE differed among ...

    • Comparison of Long and Short High-Intensity Interval Exercise Bouts on Running Performance, Physiological and Perceptual Responses 

      Valstad, Sverre; Heimburg, Erna von; Welde, Boye; van den Tillaar, Roland (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-18)
      This study compared the effects of long (4×4 min) and short intervals (4×8×20 s) of high-intensity interval exercise bouts (HIIT) on running performance, physiological and perceptual responses, and excess postexercise oxygen consumption (EPOC). Twelve healthy college students (8 men, 4 women; mean age=22±2 years) performed long (90–95% of peak heart rate) and short intervals (maximal intensity) of ...

    • Effects of upper-body sprint-interval training on strength and endurance capacities in female cross-country skiers 

      Vandbakk, Kristine; Welde, Boye; Hovstein, Andrea; Baumgart, Julia Kathrin; Ettema, Gertjan; Karlsen, Trine; Sandbakk, Øyvind (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-27)
      Thermal conductivity and thermal diffusivity of ionic liquids (ILs) are investigated in this work. A hot disk method for ILs thermal conductivity and thermal diffusivity measurement is utilized. Firstly, the thermal conductivity of water is measured to check the reliability of the hot disk method. In addition, the thermal conductivity of pure ILs, including BmimBF<sub>4</sub>, BmimPF<sub>6</sub>, ...

    • Impact of incline, sex and level of performance on kinematics during a distance race in classical cross-country skiing 

      Stöggl, Thomas; Welde, Boye; Supej, Matej; Zoppirolli, Chiarra; Rolland, Carsten Gade; Holmberg, Hans-Christer; Pellegrini, Barbara (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-01)
      Here, female and male elite cross-country (XC) skiers were compared on varying terrain during an official 10-km (women) and 15-km (men) Norwegian championship race. On the basis of race performance, 82 skiers were classified as fast (FS) (20 women, 20 men) or slower (SS) (21, 21) skiers. All were video recorded on flat (0°), intermediate (3.5°), uphill (7.1°) and steep uphill (11°) terrain during ...

    • Influence of different soccer-specific maximal actions on physiological, perceptual and accelerometer measurement loads 

      Dalen, Terje; Øverås, Ørjan; van den Tillaar, Roland; Welde, Boye; von Heimburg, Erna Dianne (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-13)
      <p><i>Background</i>: The aim of this study was to compare the effect of different soccer-specific maximal actions (Continuous run, Sprint, Sprint with change of direction [Sprint COD], Jump and Shot) upon physiological (oxygen uptake and heart rate) and perceptual (rating of perceived exertion [RPE]) responses and accelerometer load.</p> <p><i>Materials and methods</i>: Ten moderately to ...

    • Intra‐arterial blood pressure traits during and after heavy resistance exercise in healthy males 

      Heitmann, Kim Arne; Dalen, Håvard; Gundersen, Guri Holmen; Ingvaldsen, Rolf Petter; Welde, Boye (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-29)
      This randomized within‐subjects crossover‐designed study evaluated intra‐arterial blood pressure (BP) traits in seven healthy males (24 ± 1 years) during heavy resistance exercise (HRE) to failure (10 × 5 repetitions, 5RES) and not to failure (10 × 3 repetitions, 3RES), both at 5RM load. By combining few repetitions, avoidance of Valsalva maneuver, and restricting the duration of each contraction, ...

    • 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 ...

    • 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, ...