• 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, ...
    • Seasonal variations in physical activity among Norwegian elementary school children in Arctic regions 

      Danielsen, Karin Helene; Vårnes, Thilde Kleppe; Sagelv, Edvard Hamnvik; Heitmann, Kim Arne; Mathisen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-21)
      The aim of this study was to measure seasonal variations in physical activity (PA) during Polar Nights (PN) and Polar Days (PD) among elementary school children in the Arctic regions of Norway. One hundred and seventy-eight schoolchildren from 1<sup>st</sup>, 3<sup>rd</sup>, 5<sup>th</sup> and 7<sup>th</sup> grade participated in the study. Physical activity was measured for seven consecutive days ...