International Journal of Sports Physiology and Performance, Volume 15, 2020, No. 7

EDITORIAL

The Pitch Invader—COVID-19 Canceled the Game: What Can Science Do for Us, and What Can the Pandemic Do for Science?
Daniel Bok, Karim Chamari and Carl Foster
Pages: 917–919

ORIGINAL INVESTIGATIONS

Effect of External Counterpulsation on Running Performance and Perceived Recovery
Suzanna Russell, Angus G. Evans, David G. Jenkins and Vincent G. Kelly
Pages: 920–926

Jump-Rope Training: Improved 3-km Time-Trial Performance in Endurance Runners via Enhanced Lower-Limb Reactivity and Foot-Arch Stiffness
Felipe García-Pinillos, Carlos Lago-Fuentes, Pedro A. Latorre-Román, Antonio Pantoja-Vallejo and Rodrigo Ramirez-Campillo
Pages: 927–933

Effects of Postexercise Sauna Bathing on Recovery of Swim Performance
Sabrina Skorski, Jan Schimpchen, Mark Pfeiffer, Alexander Ferrauti, Michael Kellmann and Tim Meyer
Pages: 934–940

The Effects of a Short Specific Versus a Long Traditional Warm-Up on Time-Trial Performance in Cross-Country Skiing Sprint
Guro Strøm Solli, Pål Haugnes, Jan Kocbach, Roland van den Tillaar, Per Øyvind Torvik and Øyvind Sandbakk
Pages: 941–948

Influence of Grip Width and Anthropometric Characteristics on the Bench-Press Load–Velocity Relationship
Alejandro Pérez-Castilla, Daniel Jerez-Mayorga, Dario Martínez-García, Ángela Rodríguez-Perea, Luis J. Chirosa-Ríos and Amador García-Ramos
Pages: 949–957

Transcranial Direct Current Stimulation: No Effect on Aerobic Performance, Heart Rate, or Rating of Perceived Exertion in a Progressive Taekwondo-Specific Test
Paulo H.C. Mesquita, Emerson Franchini, Marco A. Romano-Silva, Guilherme M. Lage and Maicon R. Albuquerque
Pages: 958–963

Warming Up Before a 20-Minute Endurance Effort: Is It Really Worth It?
David Barranco-Gil, Lidia B. Alejo, Pedro L. Valenzuela, Jaime Gil-Cabrera, Almudena Montalvo-Pérez, Eduardo Talavera, Susana Moral-González, Vicente J. Clemente-Suárez and Alejandro Lucia
Pages: 964–970

Effect of Sildenafil Citrate on Exercise Capacity in Athletes With Spinal Cord Injury
Claudio Perret, Debbie Van Biesen, Matthias Strupler, Pia Pit-Grosheide and Yves Vanlandewijck
Pages: 971–975

Effect of Volume on Eccentric Overload–Induced Postactivation Potentiation of Jumps
Kevin L. de Keijzer, Stuart A. McErlain-Naylor, Antonio Dello Iacono and Marco Beato
Pages: 976–981

Optimizing Interval Training Through Power-Output Variation Within the Work Intervals
Arthur H. Bossi, Cristian Mesquida, Louis Passfield, Bent R. Rønnestad and James G. Hopker
Pages: 982–989

Influence of Maturation Status on Eccentric Hamstring Strength Improvements in Youth Male Soccer Players After the Nordic Hamstring Exercise
Benjamin Drury, Thomas Green, Rodrigo Ramirez-Campillo and Jason Moran
Pages: 990–996

Acute and Short-Term Response to Different Loading Conditions During Resisted Sprint Training
Beatriz Bachero-Mena, Miguel Sánchez-Moreno, Fernando Pareja-Blanco and Borja Sañudo
Pages: 997–1004

Topical Sodium Bicarbonate: No Improvement in Blood Buffering Capacity or Exercise Performance
Alannah K.A. McKay, Peter Peeling, Martyn J. Binnie, Paul S.R. Goods, Marc Sim, Rebecca Cross and Jason Siegler
Pages: 1005–1011

Force–Velocity–Power Profile in High-Elite Boulder, Lead, and Speed Climber Competitors
Guillaume Levernier, Pierre Samozino and Guillaume Laffaye
Pages: 1012–1018

Effect of Differential Training on Female Volleyball Spike-Jump Technique and Performance
Philip X. Fuchs, Andrea Fusco, Jeffrey W. Bell, Serge P. von Duvillard, Cristina Cortis and Herbert Wagner
Pages: 1019–1025

Effect of Weekly Training Frequency With the Nordic Hamstring Exercise on Muscle-Strain Risk Factors in Football Players: A Randomized Trial
Thales M. Medeiros, João B. Ribeiro-Alvares, Carolina G. Fritsch, Gabriel S. Oliveira, Lucas Severo-Silveira, Evangelos Pappas and Bruno M. Baroni
Pages: 1026–1033

BRIEF REPORTS

Training Load, Neuromuscular Readiness, and Perceptual Fatigue Profile in Youth Elite Long-Jump Athletes
Alberto Franceschi, Daniele Conte, Marco Airale and Jaime Sampaio
Pages: 1034–1038

Ultraendurance Exercise in a Renal Transplant Recipient: A Case Study
Sonsoles Hernández-Sánchez, Pedro L. Valenzuela, Javier S. Morales, Juan J. Carrero, Alejandro Lucia and Jonatan R. Ruiz
Pages: 1039–1042

Effects of Drop Jumps on 1000-m Performance Time and Pacing in Elite Male and Female Endurance Runners
Daniel Boullosa, César C.C. Abad, Valter P. Reis, Victor Fernandes, Claudio Castilho, Luis Candido, Alessandro M. Zagatto, Lucas A. Pereira and Irineu Loturco
Pages: 1043–1046

Functional Threshold Power: Relationship With Respiratory Compensation Point and Effects of Various Warm-Up Protocols
David Barranco-Gil, Jaime Gil-Cabrera, Pedro L. Valenzuela, Lidia B. Alejo, Almudena Montalvo-Pérez, Eduardo Talavera, Susana Moral-González and Alejandro Lucia
Pages: 1047–1051

INVITED COMMENTARY

State of the Science on Ultramarathon Running After a Half Century: A Systematic Analysis and Commentary
Martin D. Hoffman
Pages: 1052–1056

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