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Emma M. Crum, Matthew J. Barnes and Stephen R. Stannard

nitrate supplementation reduces the O 2 cost of low-intensity exercise and enhances tolerance to high-intensity exercise in humans . Journal of Applied Physiology, 107 ( 4 ), 1144 – 1155 . PubMed ID: 19661447 doi:10.1152/japplphysiol.00722.2009 10.1152/japplphysiol.00722.2009 Bonarska-Kujawa , D

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Ronald J. Maughan

several substrates and metabolites for the relatively large changes in plasma volume that inevitably occur in high-intensity exercise. The change in plasma volume was calculated from the well-established Dill and Costill formula that uses changes in hemoglobin concentration and hematocrit for the

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Callum G. Brownstein, Derek Ball, Dominic Micklewright and Neil V. Gibson

repeated sprints can be influenced by stage of maturation ( 27 ). Specifically, prepubescent children have been shown to fatigue less during high-intensity exercise and recover more quickly compared with postpubescent adolescents ( 26 ). Differences in the fatigue response are mediated by physiological

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Sabrina Skorski, Iñigo Mujika, Laurent Bosquet, Romain Meeusen, Aaron J. Coutts and Tim Meyer

performance decrement as well as their time course to recover. 11 Metabolic Recovery The elevated energy expenditure caused by training and competition reduces substrate availability, which can decrease performance capacity. In high-intensity exercise, any decrease in substrate availability has the potential

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.1123/pes.2015-0200 pes.2015-0200 Impact of a Soccer Game on Cardiac Biomarkers in Adolescent Players Seyed Mohsen Hosseini * Mojtaba Azizi * Ali Samadi * Nahid Talebi * Hannes Gatterer * Martin Burtscher * 1 02 2018 30 1 90 95 10.1123/pes.2017-0060 pes.2017-0060 Effect of Low- Versus High-Intensity

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Ilkka Heinonen, Jukka Kemppainen, Toshihiko Fujimoto, Juhani Knuuti and Kari K. Kalliokoski

previous observations by reporting that bone marrow GU is increased from a low to moderate exercise intensity effort but not significantly from moderate- to high-intensity exercise. Furthermore, by determining the ratio between bone marrow GU to that of muscle, it could be documented in the present study

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Trent Stellingwerff, Ingvill Måkestad Bovim and Jamie Whitfield

due to early studies demonstrating improvements in exercise efficiency (decreased O 2 cost at the same absolute workload) and a reduction the VO 2 slow component (which reflects a loss in muscle efficiency during high-intensity exercise), following both acute and chronic supplementation (reviewed in

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Phillip D. Tomporowski and Daniel M. Pendleton

) found that a 20-min cycling bout consisting of alternating 3-min high-intensity exercise periods and 2-min low-intensity exercise enhanced young adults’ retention of a continuous tracking task skill when measured 24 hr following training. Snow et al. ( 2016 ) performed a systematic replication of the

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David Giles, Joel B. Chidley, Nicola Taylor, Ollie Torr, Josh Hadley, Tom Randall and Simon Fryer

analogs’ critical force (CF, in newtons) and W ′ (in newton seconds) will be referred to (eg, Hendrix et al 8 ). Figure 1 —Illustration of the power or force–time relationship for high-intensity exercise. The numbered points (1–3) represent time to exhaustion for independent tests at the power or force

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Mark Kramer, Mark Watson, Rosa Du Randt and Robert W. Pettitt

fitness for male rugby union players. Of greater importance however, is that the AOT method yields key variables that are more reflective of, and sensitive to, training-induced changes associated with aerobic fitness (ie, % V ˙ O 2 max ) and high-intensity exercise (ie, CS), both of which are lacking in