Results 91 to 100 of about 5,738,081 (222)

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

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

Long-Term Performance Trends in Elite Cross-Country Skiing

The Sky
Performance trends in elite long-distance cross-country skiing were analyzed using the Winter Olympics, FIS Cross-Country World Championships, and FIS World Cup race results from 1992 to 2026 for the top 30 finishers in men’s 50 km and women’s 30 km ...
Rock Ouimet
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

A Smart Ski Pole for Skiing Pattern Recognition and Quantification Application

Sensors
In cross-country skiing, ski poles play a crucial role in technique, propulsion, and overall performance. The kinematic parameters of ski poles can provide valuable information about the skier’s technique, which is of great significance for coaches and ...
Yangyanhao Guo, Renjie Ju, Kunru Li, Zhiqiang Lan, Lixin Niu, Xiaojuan Hou, Shuo Qian, Wei Chen, Xinyu Liu, Gang Li, Jian He, Xiujian Chou   +11 more
doaj   +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

Exploring Recreational Conflict on Shared Backcountry Tramping and Mountain Biking Tracks in Aotearoa New Zealand

New Zealand Geographer, Volume 82, Issue 3, December 2026.
ABSTRACT In a move away from exclusive use by modality, a number of shared tramping and mountain biking tracks have been developed in New Zealand. We ask: On shared tracks, what tensions arise and how are they experienced? Using data from online surveys of track‐users, we examine bikers' and trampers' perspectives and experiences of conflict.
Joe Fagan, Robin Kearns, Laura Bates
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

Using the power balance model to simulate cross-country skiing on varying terrain

, 2014
John F Moxnes,1 Øyvind Sandbakk,2 Kjell Hausken31Department for Protection, Norwegian Defence Research Establishment, Kjeller, Norway; 2Center for Elite Sports Research, Department of Neuroscience, Norwegian University of Science and Technology ...
Hausken K, Sandbakk Ø, Moxnes JF
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