Blar i forfatter "Randers, Morten B."

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    • Associations between maximal strength, sprint, and jump height and match physical performance in high‐level female football players 

      Pedersen, Sigurd; Welde, Boye; Sagelv, Edvard Hamnvik; Heitmann, Kim Arne; Randers, Morten B.; Johansen, Dag; Pettersen, Svein Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-06)
      Studies on females’ decisive physical components to physical match-play performance are sparse and only emphasize endurance tests. Thus, the influence of maximal strength and power on physical performance during match-play is currently unknown. The aim of this study was to assess the association between one repetition maximum (1RM) half squat strength, 5-, 10-, and 15-m sprint times, countermovement ...

    • Caffeine supplementation does not affect match activities and fatigue resistance during match play in young football players 

      Pettersen, Svein Arne; Krustrup, Peter; Bendiksen, Mads; Randers, Morten B.; Brito, Joao; Bangsbo, Jens; Yun, Jin; Mohr, Magni (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-10-30)
      The study examined the effect of caffeine supplementation on match activities and development of fatigue during a football match. In a randomised, double-blind cross-over design, two experimental football games separated by 7 days were organised between the junior teams of two professional football clubs (17.6 ± 1.1 years (±s), 71.7 ± 6.9 kg, 13.9% ± 5.0% body fat). The players ingested either a ...

    • Effects of Linear Versus Changes of Direction Repeated Sprints on Intermittent High Intensity Running Performance in High-level Junior Football Players over an Entire Season: A Randomized Trial 

      Sagelv, Edvard Hamnvik; Selnæs, Ivar; Pedersen, Sigurd; Pettersen, Svein Arne; Randers, Morten B.; Welde, Boye (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-06)
      <i>Abstract</i>: Background: Changes of direction (COD) repeated sprints (RSs) might have greater relevance to football than linear RSs. We aimed to compare the effects of linear and COD RSs on intermittent high intensity running (HIR) over an entire season. <p> <p><i>Methods</i>: In total, 19 high-level male football players (16–19 years) randomly performed linear RSs or COD RSs twice a week ...

    • Effects of Linear Versus Changes of Direction Repeated Sprints on Intermittent High Intensity Running Performance in High-level Junior Football Players over an Entire Season: A Randomized Trial 

      Sagelv, Edvard H.; Selnæs, Ivar; Pedersen, Sigurd; Pettersen, Svein Arne; Randers, Morten B.; Welde, Boye (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-06)
      <i>Background</i>: Changes of direction (COD) repeated sprints (RSs) might have greater relevance to football than linear RSs. We aimed to compare the effects of linear and COD RSs on intermittent high intensity running (HIR) over an entire season. <p> <p><i>Methods</i>: In total, 19 high-level male football players (16–19 years) randomly performed linear RSs or COD RSs twice a week during their ...

    • Flywheel squats versus free weight high load squats for improving high velocity movements in football. A randomized controlled trial 

      Sagelv, Edvard Hamnvik; Pedersen, Sigurd; Nilsen, Lars Petter R.; Casolo, Andrea; Welde, Boye; Randers, Morten B.; Pettersen, Svein Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-02)
      <i>Background</i> - High load (HL: > 85% of one repetition maximum (1RM)) squats with maximal intended velocity contractions (MIVC) combined with football sessions can be considered a relevant and time-efficient practice for maintaining and improving high velocity movements in football. Flywheel (FW) resistance exercise (RE) have recently emerged with promising results on physical parameters associated ...

    • Kicking velocity and effect on match performance when using a smaller, lighter ball in women's football 

      Andersen, Thomas Bull; Krustrup, Peter; Bendiksen, Mads; Ørntoft, Christina; Randers, Morten B.; Pettersen, Svein Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-23)
      The present study evaluated the effect of a smaller, lighter ball on kicking speed and technical- tactical and physical match performance in high-level adult female footballers. In the laboratory test setting, the peak ball velocity was 6 % higher with the new ball (NB) than the standard ball (SB) (26.5 ± 0.5 vs. 25.1 ± 0.5 m · s − 1, p < 0.05). However, during match-play, no differences ...

    • Maximal Strength, Sprint, and Jump Performance in High-Level Female Football Players Are Maintained With a Customized Training Program During the COVID-19 Lockdown 

      Pedersen, Sigurd; Johansen, Dag; Pettersen, Svein Arne; Sagelv, Edvard Hamnvik; Welde, Boye; Winther, Andreas Kjæreng; Casolo, Andrea; Randers, Morten B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-26)
      Introduction: The COVID-19 outbreak with partial lockdown has inevitably led to an alteration in training routines for football players worldwide. Thus, coaches had to face with the novel challenge of minimizing the potential decline in fitness during this period of training disruption.<p> <p>Methods: In this observational pre- to posttest study involving Norwegian female football players (18.8 ...