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Competitive Cross-Country Skiers Have Longer Time to Exhaustion Than Recreational Cross-Country Skiers During Intermittent Work Intervals Normalized to Their Maximal Aerobic Power

Eivind Holsbrekken, Øyvind Gløersen, Magne Lund-Hansen, and Thomas Losnegard

Endurance-sport performance is generally dependent on performance oxygen uptake ( V ˙ O 2 ) and gross efficiency (GE). Some endurance sports, like cross-country (XC) skiing and cycling, are characterized by large fluctuations in intensity due to both environmental factors and equipment used. 1 – 4

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Sex Differences in Physiological Determinants of Performance in Elite Adolescent, Junior, and Senior Cross-Country Skiers

Ove Sollie and Thomas Losnegard

In cross-country (XC) skiing, male athletes typically perform 10% to 12% better compared with their female counterparts 2 , 5 depending on the subtechnique employed, as the sex difference is magnified when the contribution from poling increases. 6 Olympic XC skiing lasts from approximately 3

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Gender Differences in Caregivers’ Attitudes to Risky Child Play in Britain: A Cross-Sectional Study

Andrea D. Smith, Helen F. Dodd, Luiza Ricardo, and Esther van Sluijs

collapsed into a binary socioeconomic status variable grouping participants into “middle class (high/medium socioeconomic status)” or “working class (low socioeconomic status).” 31 Statistical Analyses Multiple linear regression models examined cross-sectional associations between parent gender and child

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The Hyperhydration Potential of Sodium Bicarbonate and Sodium Citrate

Jason C. Siegler, Amelia J. Carr, William T. Jardine, Lilia Convit, Rebecca Cross, Dale Chapman, Louise M. Burke, and Megan Ross

, T. , Shaw , G. , Clarke , N. , Graham , K. , Cross , R. , & Siegler , J.C. ( 2020 ). The impact of individualizing sodium bicarbonate supplementation strategies on world-class rowing performance . Frontiers in Nutrition, 7, 1 – 11 . https://doi.org/10.3389/fnut.2020.00138 10

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A Multistudy Cross-Sectional and Experimental Examination Into the Interactive Effects of Moral Identity and Moral Disengagement on Doping

Nicholas Stanger and Susan H. Backhouse

standpoint, helps develop and strengthen anti-doping intervention models. Currently, an experimentally driven evidence base does not exist, and present-day interventions and psychological deterrence measures are largely modeled on assumptions from cross-sectional research. To this end, this research aims to

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Performance Effects of Video- and Sensor-Based Feedback for Implementing a Terrain-Specific Micropacing Strategy in Cross-Country Skiing

Trine M. Seeberg, Jan Kocbach, Rune Kjøsen Talsnes, Frederic Meyer, Thomas Losnegard, Johannes Tjønnås, Øyvind Sandbakk, and Guro Strøm Solli

Cross-country (XC) skiing is an endurance sport performed outdoors in varying terrain and cold conditions, with competition formats ranging from 3-minute sprint races to 2-hour distance races. The race courses consist of ascending, flat, and descending terrain, designed so each of these sections is

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Double-Poling Physiology and Kinematics of Elite Cross-Country Skiers: Specialized Long-Distance Versus All-Round Skiers

Øyvind Skattebo, Thomas Losnegard, and Hans Kristian Stadheim

terrain, respectively. 2 , 3 Cross-country (XC) skiing is a complex endurance sport consisting of several competition formats with durations ranging from ∼3 minutes (sprint, ∼1.3–1.8 km) to more than 2 hours (≤50 km) in World Cup (WC) and Olympic events. Consequently, an increasing number of athletes

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A Scoping Review of Disability Assessment in Prospective and Cross-Sectional Studies That Included Device-Based Measurement of Physical Activity

Shelby Carr, Andrew J. Atkin, Andy P. Jones, Richard Pulsford, and Karen Milton

search strategy focused on publications, but the unit of analysis for the review was “study,” findings from which may have been reported across multiple publications. Studies were considered for inclusion if they met the following criteria: (1) observational studies that were either prospective or cross

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Impact of Microcycle Structures on Physical and Technical Outcomes During Professional Rugby League Training and Matches

Tahleya Eggers, Rebecca Cross, Dean Norris, Lachlan Wilmot, and Ric Lovell

Nutr Exerc Metab . 2016 ; 26 ( 5 ): 464 – 472 . PubMed ID: 27096279 doi:10.1123/ijsnem.2015-0335 27096279 10. Cross R , Siegler J , Marshall P , Lovell R . Scheduling of training and recovery during the in-season weekly micro-cycle: insights from team sport practitioners . Eur J Sport Sci

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Physical Activity and Its Association With Body Mass Index: A Cross-Sectional Analysis in Middle-Aged Adults From 4 Sub-Saharan African Countries

Monica Muti, Lisa J. Ware, Lisa K. Micklesfield, Michele Ramsay, Godfred Agongo, Palwende R. Boua, Isaac Kisiangani, Ian Cook, Francesc Xavier Gómez-Olivé, Nigel J. Crowther, Chodziwadziwa Kabudula, Shane A. Norris, and Tinashe Chikowore

and Setting We used data from 9388 men and women aged 29–82 years recruited across 5 sites in the Africa-Wits-INDEPTH partnership for Genomic studies (AWI-Gen), a large, population-based cross-sectional cohort from rural and urban areas in 4 sub-Saharan African countries. 24 , 25 Four of the sites