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J

James Hopker

university

31H-index
173Paper Count
2.8KCitation Count
Published Papers 43
Publication Date
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Task Failure in Endurance Sports: A Review
errSports Medicine
IF9.4
err2026-04-01
err0
errOAAI
errJuan-José Pérez-Díaz; José-Antonio Salas-Montoro; James Hopker; Mikel Zabala
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Statistical Discrimination of Urinary Steroid Biomarkers in the Athlete Biological Passport: A Novel Approach to an Abnormal Steroid Profile Score (ASPS)
errDrug Testing and Analysis
IF2.7
err2026-03-05
err0
errOAAI
errJames G. Hopker; Jim E. Griffin; Matthew N. Fedoruk; Laura A. Lewis
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errSave
Validity and Reliability of an On-Bike Sensor System for the Determination of Aerodynamic Drag in Cycling
errEUROPEAN JOURNAL OF SPORT SCIENCE
IF3
err2025-12-01
err0
errOAAI
errHopker, James G.; Barnes, Callum; Fennell, Christopher R. J.; Gibson, Stuart
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Fast Bayesian inference in a class of sparse linear mixed effects models
errStatistics and Computing
IF0
err2025-10-01
err0
errOAAI
errSpyropoulou, Maria-Zafeiria; Hopker, James G.; Griffin, Jim E.
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errSave
The delta concept does not effectively normalise exercise responses to exhaustive interval training
errJOURNAL OF SCIENCE AND MEDICINE IN SPORT
IF3.4
err2024-12-01
err0
errOAAI
errBossi, Arthur Henrique; Timmerman, Wouter; Cole, Diana; Pass, Louis; Hopker, James
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Reproducibility of NIRS-derived mitochondrial oxidative capacity in highly active older adults
errEXPERIMENTAL GERONTOLOGY
IF4.3
err2023-05-01
err8
errOAAI
errFennell, Christopher R. J.; Mauger, Alexis R.; Hopker, James G.
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Louis Passfield-A Role Model for the Mission of IJSPP
errINTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
IF4.3
err2023-02-01
err0
errOAAI
errSandbakk, Oyvind; Burnley, Mark; Hopker, James; Pappous, Athanasios; Marcora, Samuele Maria; Brickley, Gary
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Physical and Mental Fatigue Reduce Psychomotor Vigilance in Professional Football Players
errINTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
IF4.3
err2022-09-01
err16
errOAAI
errAngius, Luca; Merlini, Michele; Hopker, James; Bianchi, Mattia; Fois, Francesco; Piras, Francesco; Cugia, Paolo; Russell, James; Marcora, Samuele Maria
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Commentary on Over 55 years of Critical Power: Fact or Artifact
errSCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
IF3.8
err2022-02-14
err2
PREAI
errAltuna, Aitor; Hopker, James
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Variability in Submaximal Self-Paced Exercise Bouts of Different Intensity and Duration
errINTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
IF4.3
err2021-12-01
err6
errOAAI
errO'Grady, Ciaran; Passfield, Louis; Hopker, James G.
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The Self-Paced Submaximal Run Test: Associations With the Graded Exercise Test and Reliability
errINTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
IF4.3
err2021-12-01
err8
errOAAI
errSangan, Hannah F.; Hopker, James G.; Davison, Glen; McLaren, Shaun J.
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The Acute Physiological and Perceptual Effects of Individualizing the Recovery Interval Duration Based Upon the Resolution of Muscle Oxygen Consumption During Cycling Exercise
errINTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
IF4.3
err2021-11-01
err2
errOAAI
errFennell, Christopher R. J.; Hopker, James G.
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errSave
Optimizing Interval Training Through Power-Output Variation Within the Work Intervals
errINTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
IF4.3
err2020-08-01
err16
errOAAI
errBossi, Arthur H.; Mesquida, Cristian; Passfield, Louis; Ronnestad, Bent R.; Hopker, James G.
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errSave
The Effect of 30-Second Sprints During Prolonged Exercise on Gross Efficiency, Electromyography, and Pedaling Technique in Elite Cyclists
errINTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
IF4.3
err2020-04-01
err7
errOAAI
errAlmquist, Nicki Winfield; Ettema, Gertjan; Hopker, James; Sandbakk, Oyvind; Ronnestad, Bent R.
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Energy Expenditure Equation Choice: Effects on Cycling Efficiency and Its Reliability
errINTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
IF4.3
err2020-02-01
err1
errOAAI
errBossi, Arthur H.; Timmerman, Wouter P.; Hopker, James G.
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errSave
The Reliability of Measuring Gross Efficiency During High-Intensity Cycling Exercise
errINTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
IF4.3
err2020-01-01
err3
errOAAI
errEbreo, Richard; Passfield, Louis; Hopker, James
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errSave
Diagnosing exercise-induced bronchoconstriction: Over-or under-detection?
errALLERGY
IF12
err2019-09-03
err6
errOAAI
errJackson, Anna; Allen, Hayden; Hull, James H.; Hopker, James; Backhouse, Susan H.; Price, Oliver J.; Dickinson, John
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errSave
Editorial: Performance Modeling and Anti-doping
errFRONTIERS IN PHYSIOLOGY
IF3.4
err2019-03-01
err4
errOAAI
errFaiss, Raphael; Saugy, Martial; Passfield, Louis; Hopker, James
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The Effect of Anodal Transcranial Direct Current Stimulation Over Left and Right Temporal Cortex on the Cardiovascular Response: A Comparative Study
errFRONTIERS IN PHYSIOLOGY
IF3.4
err2018-12-18
err5
errOAAI
errAngius, Luca; Marcora, Samuele M.; Hopker, James G.; Mauger, Alexis R.
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errSave
Indirect airway challenges and asthma related conditions in healthy active individuals
errEUROPEAN RESPIRATORY JOURNAL
IF21
err2018-11-19
err0
PREAI
errGowers, William; Jackson, Anna; Hull, James; Hopker, James; Dickinson, John
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Research Directions

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Co-authors
Cooperation Journals
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Álvaro Pascual‐Leone
H-index: 172 · Papers: 1.3K
J
James M. Russell
H-index: 88 · Papers: 677
G
Guillaume Y. Millet
H-index: 63 · Papers: 506
S
Samuele Marcora
H-index: 61 · Papers: 222
E
Emiliano Santarnecchi
H-index: 60 · Papers: 303
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