Publications by authors named "David A Opar"

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Hamstring Strain Injury Rehabilitation.
Jack T Hickey, David A Opar, Leigh J Weiss, Bryan C Heiderscheit

J Athl Train· February 2022

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Impact of the Nordic hamstring and hip extension exercises on hamstring architecture and morphology: implications for injury prevention.
Matthew N Bourne, Steven J Duhig, Ryan G Timmins, Morgan D Williams, David A Opar, Aiman Al Najjar, Graham K Kerr, Anthony J Shield

Br J Sports Med· March 2017

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Short biceps femoris fascicles and eccentric knee flexor weakness increase the risk of hamstring injury in elite football (soccer): a prospective cohort study.
Ryan G Timmins, Matthew N Bourne, Anthony J Shield, Morgan D Williams, Christian Lorenzen, David A Opar

Br J Sports Med· December 2016

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Architectural Changes of the Biceps Femoris Long Head after Concentric or Eccentric Training.
Ryan G Timmins, Joshua D Ruddy, Joel Presland, Nirav Maniar, Anthony J Shield, Morgan D Williams, David A Opar

March 2016

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Eccentric Knee Flexor Strength and Risk of Hamstring Injuries in Rugby Union: A Prospective Study.
Matthew N Bourne, David A Opar, Morgan D Williams, Anthony J Shield

Am J Sports Med· November 2015

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The Relationship Between Running Load, Strength, Muscle Architecture and Hamstring Strain Injury Across Two Seasons of Elite Male Australian Football: A Prospective Cohort Study.
Ray Breed, David A Opar, Rich D Johnston, Jack T Hickey, Morgan D Williams

Sports Med Open· November 2025

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Establishing the Validity of Low Sampling Rates for Assessing Force/Torque-Time Variables During Isometric Strength Tests.
Brian Kim, David A Opar, Paul J Tofari, Nirav Maniar, Stuart J Cormack

Int J Sports Physiol Perform· June 2025

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Nutritional Interventions to Attenuate Quadriceps Muscle Deficits following Anterior Cruciate Ligament Injury and Reconstruction.
Miriam J Smith, Nolan J Hoffman, Argell J San Jose, Louise M Burke, David A Opar

Sports Med· March 2025

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Quantifying Muscle Volume Deficits Among 38 Lower Extremity Muscles in Collegiate Football Athletes After Anterior Cruciate Ligament Reconstruction.
Naoaki Ito, Jack A Martin, Mikel R Joachim, Silvia S Blemker, David A Opar

Am J Sports Med· March 2025

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The Structure, Function, and Adaptation of Lower-Limb Aponeuroses: Implications for Myo-Aponeurotic Injury.
Scott Hulm, Ryan G Timmins, Jack T Hickey, Nirav Maniar, Yi-Chung Lin, David A Opar

Sports Med Open· December 2024

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The Fragility Index of Risk Factors for Hamstring Injuries.
Matthew Anthis, Stephanie Gourd, Brian Kim, Joshua D Ruddy, Rod Whiteley, David A Opar

J Orthop Sports Phys Ther· October 2024

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Bilateral Corticomotor Reorganization and Symptom Development in Response to Acute Unilateral Hamstring Pain: A Randomized, Controlled Study.
Ariane Y Suhood, Simon J Summers, David A Opar, Tom Astill, Winko W An

J Pain· April 2024

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Biceps femoris long head muscle and aponeurosis geometry in males with and without a history of hamstring strain injury.
Stephanie L Lazarczuk, Tyler J Collings, Andrea H Hams, Ryan G Timmins, David A Opar

Scand J Med Sci Sports· April 2024

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The Effect of Eccentric or Isometric Training on Strength, Architecture, and Sprinting across an Australian Football Season.
Ryan G Timmins, Dean Filopoulos, Jake Giannakis, Victor Nguyen, Joshua D Ruddy, David A Opar

Med Sci Sports Exerc· March 2024

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Hamstring Strain Injury Risk Factors in Australian Football Change over the Course of the Season.
Aylwin Sim, Ryan G Timmins, Joshua D Ruddy, Haifeng Shen, Kewen Liao, David A Opar

Med Sci Sports Exerc· February 2024

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Validity of Inertial Measurement Units to Measure Lower-Limb Kinematics and Pelvic Orientation at Submaximal and Maximal Effort Running Speeds.
Yi-Chung Lin, Kara Price, Declan S Carmichael, Nirav Maniar, Jack T Hickey, David A Opar

Sensors (Basel)· December 2023

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Common High-Speed Running Thresholds Likely Do Not Correspond to High-Speed Running in Field Sports.
Brock W Freeman, Scott W Talpey, Lachlan P James, David A Opar, Warren B Young

J Strength Cond Res· July 2023

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Lower Patellofemoral Joint Contact Force During Side-Step Cutting After Return-to-Sports Clearance Following Anterior Cruciate Ligament Reconstruction.
Argell J San Jose, Nirav Maniar, Rodney Whiteley, David A Opar, Ryan G Timmins

Am J Sports Med· June 2023

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The dose-response of pain throughout a Nordic hamstring exercise intervention.
Fearghal P Behan, David A Opar, Robin Vermeulen, Ryan G Timmins, Rodney Whiteley

Scand J Med Sci Sports· April 2023

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Explosive hamstrings strength asymmetry persists despite maximal hamstring strength recovery following anterior cruciate ligament reconstruction using hamstring tendon autografts.
Argell T San Jose, Nirav Maniar, Ryan G Timmins, Kate Beerworth, Chris Hampel, David A Opar

Knee Surg Sports Traumatol Arthrosc· January 2023

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Reliability of corticospinal excitability and intracortical inhibition in biceps femoris during different contraction modes.
Joel D Presland, Paul J Tofari, Ryan G Timmins, Dawson J Kidgell, David A Opar

Eur J Neurosci· January 2023

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Mechanical, Material and Morphological Adaptations of Healthy Lower Limb Tendons to Mechanical Loading: A Systematic Review and Meta-Analysis.
Stephanie L Lazarczuk, Nirav Maniar, David A Opar, Steven J Duhig, Anthony Shield

Sports Med· October 2022

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Early introduction of high-intensity eccentric loading into hamstring strain injury rehabilitation.
Jack T Hickey, Ebonie Rio, Thomas M Best, Ryan G Timmins, Nirav Maniar, David A Opar

J Sci Med Sport· September 2022

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Muscle Force Contributions to Anterior Cruciate Ligament Loading.
Nirav Maniar, Michael H Cole, Adam L Bryant, David A Opar

Sports Med· August 2022

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Muscle function during single leg landing.
Nirav Maniar, Anthony G Schache, Claudio Pizzolato, David A Opar

Sci Rep· July 2022

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Assessing isometric kicking force and post-match responses using the Kicker test.
Rees J Thomas, Ryan G Timmins, Paul J Tofari, Morgan D Williams, David A Opar

J Sports Sci· June 2022

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Anterior Cruciate Ligament Reconstruction Increases the Risk of Hamstring Strain Injury Across Football Codes in Australia.
Daniel J Messer, Morgan D Williams, Matthew N Bourne, David A Opar, Ryan G Timmins

Sports Med· April 2022

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The Dose-Response of the Nordic Hamstring Exercise on Biceps Femoris Architecture and Eccentric Knee Flexor Strength: A Randomized Interventional Trial.
Fearghal P Behan, Robin Vermeulen, Rod Whiteley, Ryan G Timmins, Joshua D Ruddy, David A Opar

Int J Sports Physiol Perform· April 2022

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Trends in Australian knee injury rates: An epidemiological analysis of 228,344 knee injuries over 20 years.
Nirav Maniar, Evert Verhagen, Adam Leigh Bryant, David Andrew Opar

Lancet Reg Health West Pac· April 2022

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