International Journal of Sports Physiology and Performance, Volume 16, 2021, No. 12


Editorial

Open Access
Why—How—What—So What
Jos J. de Koning
Page: 1727–1727
DOI: 10.1123/ijspp.2021-0498

Original Investigations

Practitioner, Coach, and Athlete Perceptions of Evidence-Based Practice in Professional Sport in Australia
Edgar Schwarz, Liam D. Harper, Rob Duffield, Robert McCunn, Andrew Govus, Sabrina Skorski, Hugh H.K. Fullagar
Page: 1728–1735
DOI: 10.1123/ijspp.2020-0835

Dose–Response Relationship Between Velocity Loss During Resistance Training and Changes in the Squat Force–Velocity Relationship
Julian Alcazar, Pedro J. Cornejo-Daza, Juan Sánchez-Valdepeñas, Luis M. Alegre, Fernando Pareja-Blanco
Page: 1736–1745
DOI: 10.1123/ijspp.2020-0692

Open Access
How Much Sleep Does an Elite Athlete Need?
Charli Sargent, Michele Lastella, Shona L. Halson, Gregory D. Roach
Page: 1746–1757
DOI: 10.1123/ijspp.2020-0896

A Comparison of Training With a Velocity Loss Threshold or to Repetition Failure on Upper-Body Strength Development in Professional Australian Footballers
Mark J. Kilgallon, Michael J. Johnston, Liam P. Kilduff, Mark L. Watsford
Page: 1758–1763
DOI: 10.1123/ijspp.2020-0882

The Effects of an Acute “Train-Low” Nutritional Protocol on Markers of Recovery Optimization in Endurance-Trained Male Athletes
Isabella Russo, Paul A. Della Gatta, Andrew Garnham, Judi Porter, Louise M. Burke, Ricardo J.S. Costa
Page: 1764–1776
DOI: 10.1123/ijspp.2020-0847

Validity of Force–Velocity Profiling Assessed With a Pneumatic Leg Press Device
Kolbjørn Lindberg, Ingrid Eythorsdottir, Paul Solberg, Øyvind Gløersen, Olivier Seynnes, Thomas Bjørnsen, Gøran Paulsen
Page: 1777–1785
DOI: 10.1123/ijspp.2020-0954

The Effect of Resistance Exercise Priming in the Morning on Afternoon Sprint Cross-Country Skiing Performance
Bjarne Rud, Eivind Øygard, Even B. Dahl, Gøran Paulsen, Thomas Losnegard
Page: 1786–1793
DOI: 10.1123/ijspp.2020-0881

Continuous Versus Intermittent Running: Acute Performance Decrement and Training Load
Antonis Kesisoglou, Andrea Nicolò, Lucinda Howland, Louis Passfield
Page: 1794–1803
DOI: 10.1123/ijspp.2020-0844

The Use of Recovery Strategies in Professional Soccer: A Worldwide Survey
Adam Field, Liam D. Harper, Bryna C.R. Chrismas, Peter M. Fowler, Alan McCall, Darren J. Paul, Karim Chamari, Lee Taylor
Page: 1804–1815
DOI: 10.1123/ijspp.2020-0799

Morning Preconditioning Exercise Does Not Increase Afternoon Performance in Competitive Runners
Even Brøndbo Dahl, Eivind Øygard, Gøran Paulsen, Bjarne Rud, Thomas Losnegard
Page: 1816–1823
DOI: 10.1123/ijspp.2020-0747

Variability in Submaximal Self-Paced Exercise Bouts of Different Intensity and Duration
Ciaran O’Grady, Louis Passfield, James G. Hopker
Page: 1824–1833
DOI: 10.1123/ijspp.2020-0785

Season-Long Heart-Rate Variability Tracking Reveals Autonomic Imbalance in American College Football Players
Andrew A. Flatt, Jeff R. Allen, Clay M. Keith, Matthew W. Martinez, Michael R. Esco
Page: 1834–1843
DOI: 10.1123/ijspp.2020-0801

Internal Training Load Affects Day-After-Pretraining Perceived Fatigue in Female Volleyball Players
Alexandru Nicolae Ungureanu, Corrado Lupo, Gennaro Boccia, Paolo Riccardo Brustio
Page: 1844–1850
DOI: 10.1123/ijspp.2020-0829

The Association Between Alterations in Redox Homeostasis, Cortisol, and Commonly Used Objective and Subjective Markers of Fatigue in American Collegiate Football
Benjamin A. McKay, Jace A. Delaney, Andrew Simpkin, Theresa Larkin, Andrew Murray, Charles R. Pedlar, Nathan A. Lewis, John A. Sampson
Page: 1851–1857
DOI: 10.1123/ijspp.2020-0933

Genetic Polymorphisms Related to VO2max Adaptation Are Associated With Elite Rugby Union Status and Competitive Marathon Performance
Elliott C.R. Hall, Sandro S. Almeida, Shane M. Heffernan, Sarah J. Lockey, Adam J. Herbert, Peter Callus, Stephen H. Day, Charles R. Pedlar, Courtney Kipps, Malcolm Collins, Yannis P. Pitsiladis, Mark A. Bennett, Liam P. Kilduff, Georgina K. Stebbings, Robert M. Erskine, Alun G. Williams
Page: 1858–1864
DOI: 10.1123/ijspp.2020-0856

The Self-Paced Submaximal Run Test: Associations With the Graded Exercise Test and Reliability
Hannah F. Sangan, James G. Hopker, Glen Davison, Shaun J. McLaren
Page: 1865–1873
DOI: 10.1123/ijspp.2020-0904

Why Train Together When Racing Is Performed Alone? Drafting in Long-Track Speed Skating
Floor A.P. van den Brandt, Inge K. Stoter, Ruby T.A. Otter, Marije T. Elferink-Gemser
Page: 1874–1879
DOI: 10.1123/ijspp.2020-0913

Using Principal Component Analysis to Compare the Physical Qualities Between Academy and International Youth Rugby League Players
Sam McCormack, Ben Jones, Sean Scantlebury, Neil Collins, Cameron Owen, Kevin Till
Page: 1880–1887
DOI: 10.1123/ijspp.2021-0049

Brief Reports

Training Distribution During a Paralympic Cycle for a Multiple Swimming Champion With Paraplegia: A Case Report
Julia Kathrin Baumgart, Espen Tønnessen, Morten Eklund, Øyvind Sandbakk
Page: 1888–1894
DOI: 10.1123/ijspp.2020-0686

Environmental and Psychophysical Heat Stress in Adolescent Tennis Athletes
Maria Misailidi, Konstantinos Mantzios, Christos Papakonstantinou, Leonidas G. Ioannou, Andreas D. Flouris
Page: 1895–1900
DOI: 10.1123/ijspp.2020-0820

Is a Head-Worn Inertial Sensor a Valid Tool to Monitor Swimming?
Stephanie J. Shell, Brad Clark, James R. Broatch, Katie Slattery, Shona L. Halson, Aaron J. Coutts
Page: 1901–1904
DOI: 10.1123/ijspp.2020-0887

Longitudinal Strength, Power, and Push-Start Performance Changes in a Skeleton Athlete: Case Study
Tim J. Mosey, Lachlan J.G. Mitchell
Page: 1905–1908
DOI: 10.1123/ijspp.2020-0727

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