Results 81 to 90 of about 4,163 (197)

Altitude or heat training to increase haemoglobin mass and endurance exercise performance in elite sport

The Journal of Physiology, EarlyView.
Abstract figure legend Upper panel, high‐altitude training typically encompasses 3–4 weeks of altitude exposure combined with training either at altitude or at sea level. Following this, a response for haemoglobin mass (Hbmass) is seen in two of three studies, which coincides with some performance gains in <50% of studies.
Carsten Lundby, Paul Robach
wiley   +1 more source

Sex differences in speed and sub-technique selection in elite sprint cross-country skiers: a time-trial qualification analysis

Frontiers in Sports and Active Living
PurposeThis study investigated sex differences in speed, sub-technique selection and cycle characteristics during a sprint cross-country skiing time-trial qualification in the classical style.MethodsThirty elite- to world-class cross-country skiers (15 ...
Øyvind Sandbakk, Øyvind Sandbakk, Jan Kocbach, Rune Kjøsen Talsnes, Thomas Losnegard   +4 more
doaj   +1 more source

The influence of tactical positioning on performance in sprint cross-country skiing. [PDF]

PLoS One, 2023
Haugnes P, Kocbach J, Noordhof D, Talsnes RK, Ettema G, Sandbakk Ø.   +5 more
europepmc   +1 more source

Intramuscular pathways of maladaptation in overtraining syndrome

The Journal of Physiology, EarlyView.
Abstract figure legend The transition from adaptive overreaching to maladaptive overtraining and mechanisms through which excessive training load can lead to performance decline. Four interconnected pathophysiological domains are highlighted: neural fatigue, involving both central and peripheral components such as altered sensory feedback and reflex ...
Emily Shorter, Oscar Horwath, Sabrina Tzivia Barsky, Ferdinand von Walden, Johanna T. Lanner   +4 more
wiley   +1 more source

Optimal V̇O2max-to-mass ratio for predicting 15 km performance among elite male cross-country skiers

Open Access Journal of Sports Medicine, 2015
Tomas Carlsson,1,2 Magnus Carlsson,1,2 Daniel Hammarström,3 Bent R Rønnestad,3 Christer B Malm,2 Michail Tonkonogi1 1School of Education, Health and Social Studies, Dalarna University, Falun, 2Sports Medicine Unit, Umeå University, Ume ...
Carlsson T, Carlsson M, Hammarström D, Rønnestad BR, Malm CB, Tonkonogi M   +5 more
doaj  

Comparative Analysis of the Diagonal Stride Technique during Roller Skiing and On-Snow Skiing in Youth Cross-Country Skiers

Sensors
Roller skiing is one primary form of training method as it is an off-snow equivalent to cross-country (XC) skiing during the dry land preseason training, but the results could only be applied to on-snow skiing with appropriate caution.
Mujia Ma, Shuang Zhao, Ting Long, Qingquan Song, Hans-Christer Holmberg, Hui Liu   +5 more
doaj   +1 more source

Mechanisms of haemoglobin mass expansion following heat stress

The Journal of Physiology, EarlyView.
Abstract figure legend Theorised mechanisms of heat stress‐induced erythropoiesis which may facilitate the expansion of haemoglobin mass. A, acute: heat stress‐induced renal ischaemia. Redistribution of blood flow away from the kidneys to facilitate thermoregulation during heat stress could reduce renal oxygen delivery, subsequently lowering renal PO2${
Elliott J. Jenkins, Brittany A. Edgett, Michael G. Hughes, Joshua C. Tremblay, Mike Stembridge   +4 more
wiley   +1 more source

Determinants of maximal oxygen uptake in highly trained females and males: a mechanistic study of sex differences using advanced invasive methods

The Journal of Physiology, EarlyView.
Abstract figure legend The results from this study show that maximal cardiac output, stroke volume and leg blood flow are similar between highly trained females and males after normalisation to lean body mass (LBM). However, the 10% higher haemoglobin concentration ([Hb]) and arterial O2 content in males result in higher systemic and leg O2 delivery ...
Øyvind Skattebo, Marcos Martin‐Rincon, Bjarne Rud, Joachim Nielsen, Lars Henrik N. Hegg, Andreas V. Kleive, Niels Ørtenblad, Øyvind Sandbakk, Robert Boushel, Hans‐Christer Holmberg, Jose A.L. Calbet, Jostein Hallén   +11 more
wiley   +1 more source

Drew Rothrock's Fundamental Contributions to Arctic Science

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract David Andrew (Drew) Rothrock III lived during a period of vigorous scientific research in the Earth Sciences, from the International Geophysical Year to the era of satellites and high‐speed computer modeling. Drew made fundamental contributions to Arctic science, helping to lay the theoretical foundations for modeling the movement and ...
Harry L. Stern, Richard E. Moritz, Michael Steele, Averil Rothrock, Yanling Yu   +4 more
wiley   +1 more source

Skin Impression Modeling Across Different Skin Types Under Different Scenes

Color Research &Application, Volume 51, Issue 5, September/October 2026.
How do Chinese perceive skin color of different ethnic groups under different shooting and viewing conditions (i.e., illuminance levels, CCTs, scenes and model‐observer familiarity)? ABSTRACT This paper presents a comprehensive study investigating how facial skin colors influence various impressions across different ethnicities and under different ...
Beijia Qin, Yuechen Zhu, Ming Ronnier Luo   +2 more
wiley   +1 more source