All Outputs (236)

Early Versus Late Rapid Force Production During Single-Joint Isometric Hamstring Assessment Using Force Plates. (2024)
Journal Article
Ripley, N. J., Barber, R., Fahey, J. T., Fahey, J., & Comfort, P. (2024). Early Versus Late Rapid Force Production During Single-Joint Isometric Hamstring Assessment Using Force Plates. Journal of Strength and Conditioning Research, https://doi.org/10.1519/JSC.0000000000004911

Ripley, NJ, Barber, R, Fahey, JT, and Comfort, P. Early versus late rapid force production during single-joint isometric hamstring assessment using force plates. J Strength Cond Res XX(X): 000-000, 2024-The aim of this study was to assess differences... Read More about Early Versus Late Rapid Force Production During Single-Joint Isometric Hamstring Assessment Using Force Plates..

The Effect of Training Modalities on Bicep Femoris Fascicle Length Adaptations: A Systematic Review and Meta-analyses (2024)
Journal Article
Ripley, N., Ross, S., Cuthbert, M., Comfort, P., & McMahon, J. (in press). The Effect of Training Modalities on Bicep Femoris Fascicle Length Adaptations: A Systematic Review and Meta-analyses. #Journal not on list, 1, 1-19. https://doi.org/10.47206/ijsc.v4i1.291

Bicep femoris long head (BFLH) fascicle length (FL) is a modifiable risk factor of hamstring strain injury (HSI) and is extremely adaptable to imposed demands. The aim was to conduct a systematic review and meta-analysis to estimate the effects of di... Read More about The Effect of Training Modalities on Bicep Femoris Fascicle Length Adaptations: A Systematic Review and Meta-analyses.

Can the Velocity of a 1RM Hang Power Clean Be Used to Estimate a 1RM Hang High Pull? (2024)
Journal Article
Suchomel, T. J., Techmanski, B. S., Kissick, C. R., & Comfort, P. (2024). Can the Velocity of a 1RM Hang Power Clean Be Used to Estimate a 1RM Hang High Pull?. Journal of Strength and Conditioning Research, 38(7), 1321-1325. https://doi.org/10.1519/JSC.0000000000004845

Suchomel, TJ, Techmanski, BS, Kissick, CR, and Comfort, P. Can the velocity of a 1RM hang power clean be used to estimate a 1RM hang high pull? J Strength Cond Res 38(7): 1321-1325, 2024-The purpose of this study was to estimate the 1-repetition maxi... Read More about Can the Velocity of a 1RM Hang Power Clean Be Used to Estimate a 1RM Hang High Pull?.

Normalization of rapid force to peak force in an isometric hamstring assessment using force plates (2024)
Journal Article
Barber, R., Fahey, J., Comfort, P., & Ripley, N. (2024). Normalization of rapid force to peak force in an isometric hamstring assessment using force plates. Apunts Sports Medicine, 59(223), 100450. https://doi.org/10.1016/j.apunsm.2024.100450

Purpose The aim of this investigation was to determine the reliability of normalizing rapid force (RF) production to peak force assessed during an isometric knee flexor assessment, and to present a novel method of c... Read More about Normalization of rapid force to peak force in an isometric hamstring assessment using force plates.

Things to keep in mind when selecting physical assessments in youth soccer: Correlations between test performances, interlimb asymmetries, and effects of maturation (2024)
Journal Article
Robles-Palazón, F. J., McMahon, J. J., Ayala, F., & Comfort, P. (2024). Things to keep in mind when selecting physical assessments in youth soccer: Correlations between test performances, interlimb asymmetries, and effects of maturation. PLoS ONE, 19(6), e0305570. https://doi.org/10.1371/journal.pone.0305570

A range of field-based tests have been proposed for inclusion in physical performance assessment batteries. However, there are obvious time and human resources constraints in applied settings. The knowledge of potential relationships between tests on... Read More about Things to keep in mind when selecting physical assessments in youth soccer: Correlations between test performances, interlimb asymmetries, and effects of maturation.

Evaluation of a novel device to assess combined knee flexion and hip extension, and hip flexion force production capability (2024)
Thesis
Calderbank, J. (2024). Evaluation of a novel device to assess combined knee flexion and hip extension, and hip flexion force production capability. (Thesis). University of Salford

Background: The late flight phase (FP) of the sprint running action is essential to enable the ‘forward most limb’ to prepare for ground contact. Kinetic and kinematic factors during the FP show association to sprinting speed. While isometric assessm... Read More about Evaluation of a novel device to assess combined knee flexion and hip extension, and hip flexion force production capability.

Comparison between Short, Medium, and Long Fields of View in Estimating Bicep Femoris Fascicle Length (2024)
Journal Article
J. Ripley, N., Comfort, P., & McMahon, J. (2024). Comparison between Short, Medium, and Long Fields of View in Estimating Bicep Femoris Fascicle Length. #Journal not on list, 3(2), 153-165. https://doi.org/10.3390/muscles3020014

Measuring the bicep femoris long head fascicle length via the use of diagnostic ultrasound has become common practice within elite sport, using single images of between 4 and 6 cm. No study to date has compared single image estimations in terms of th... Read More about Comparison between Short, Medium, and Long Fields of View in Estimating Bicep Femoris Fascicle Length.

Neuromuscular Capabilities in Top-Level Weightlifters and Their Association with Weightlifting Performance (2024)
Journal Article
Soriano, M. A., Flores, F. J., Lama-Arenales, J., Fernández-del-Olmo, M., & Comfort, P. (2024). Neuromuscular Capabilities in Top-Level Weightlifters and Their Association with Weightlifting Performance. Applied Sciences, 14(9), 3762. https://doi.org/10.3390/app14093762

The aim of this study was to determine the associations between the front and back squat, countermovement jump (CMJ) and deep squat jump (DSJ) force–time metrics, and weightlifting performance in top-level weightlifters. Thirteen top-level weightlift... Read More about Neuromuscular Capabilities in Top-Level Weightlifters and Their Association with Weightlifting Performance.

"You Are Not Wrong About Getting Strong:" An Insight Into the Impact of Age Group and Level of Competition on Strength in Spanish Football Players. (2024)
Journal Article
A. Soriano, M., Paredes, V., Comfort, P., Jiménez-Ormeño, E., Areces-Corcuera, F., Giráldez-Costas, V., …J. McMahon, J. (2024). "You Are Not Wrong About Getting Strong:" An Insight Into the Impact of Age Group and Level of Competition on Strength in Spanish Football Players. International Journal of Sports Physiology and Performance, 1-8. https://doi.org/10.1123/ijspp.2023-0510

This study aimed to compare the maximum and rapid force production of Spanish football players and explore the differences between age group and level of competition. A cross-sectional study was developed to evaluate the peak force (PF), relative PF,... Read More about "You Are Not Wrong About Getting Strong:" An Insight Into the Impact of Age Group and Level of Competition on Strength in Spanish Football Players..

Effect of Sampling Frequency on a Unilateral Isometric Hamstring Strength Assessment Using Force Plates (2024)
Journal Article
Ripley, N., McMahon, J., & Comfort, P. (2024). Effect of Sampling Frequency on a Unilateral Isometric Hamstring Strength Assessment Using Force Plates. #Journal not on list, https://doi.org/10.1007/s42978-024-00277-w

The purpose of this study was to determine the effect of sampling frequency on the 90-90 (90-degrees hip and knee flexion) isometric hamstring assessment. Thirty-three elite female soccer players (age: 18.7 ± 3.7 years; height: 158.3 ± 5.9 cm; body m... Read More about Effect of Sampling Frequency on a Unilateral Isometric Hamstring Strength Assessment Using Force Plates.

Association between protein intake and muscle wasting in critically ill children: A prospective cohort study (2024)
Journal Article
Tume, L. N., Simons, C., Latten, L., Huang, C., Comfort, P., Compton, V., …Valla, F. V. (in press). Association between protein intake and muscle wasting in critically ill children: A prospective cohort study. Journal of Parenteral and Enteral Nutrition, https://doi.org/10.1002/jpen.2627

Background: Survival from pediatric critical illness in high‐income countries is high, and the focus now must be on optimizing the recovery of survivors. Muscle mass wasting during critical illness is problematic, so identifying factors that may redu... Read More about Association between protein intake and muscle wasting in critically ill children: A prospective cohort study.

The effect of rest redistribution on kinetic and kinematic variables during the hang pull (2024)
Journal Article
Meechan, D., McMahon, J. J., Suchomel, T. J., & Comfort, P. (in press). The effect of rest redistribution on kinetic and kinematic variables during the hang pull. PloS one, 19(2), e0299311. https://doi.org/10.1371/journal.pone.0299311

The aim of this study was to compare the effects of rest redistribution (RR) on kinetics and kinematics during the hang pull (HP). Twenty-one male athletes (age 29.5 ± 4.3 years, height 1.78 ± 0.07 m, body mass 75.17 ± 11.11 kg, relative one repetiti... Read More about The effect of rest redistribution on kinetic and kinematic variables during the hang pull.

Relative strength explains the differences in multi-joint rapid force production between sexes (2024)
Journal Article
Comfort, P., McMahon, J. J., Lake, J. P., Ripley, N. J., Triplett, N. T., & Haff, G. G. (in press). Relative strength explains the differences in multi-joint rapid force production between sexes. PloS one, 19(2), e0296877. https://doi.org/10.1371/journal.pone.0296877

The primary aim of this study was to determine whether relative strength explains the differences in the rapid force production (force developed during first 150-, 200-, and 250 ms) of females and males, and to evaluate the relationships between peak... Read More about Relative strength explains the differences in multi-joint rapid force production between sexes.

Real-World Fatigue Testing in Professional Rugby Union: A Systematic Review and Meta-analysis. (2023)
Journal Article
Grainger, A., Comfort, P., Twist, C., M. Heffernan, S., & Tarantino, G. (2023). Real-World Fatigue Testing in Professional Rugby Union: A Systematic Review and Meta-analysis. Sports Medicine, 10.1007/s40279-023-01973-3. https://doi.org/10.1007/s40279-023-01973-3

Professional rugby union is a high-intensity contact sport with position-specific high training and match volumes across a season that may lead to periods of fatigue if above a typically experienced threshold. This study assesses the influence of mat... Read More about Real-World Fatigue Testing in Professional Rugby Union: A Systematic Review and Meta-analysis..

The Kneeling Isometric Plantar Flexor Test: Preliminary Reliability and Feasibility in Professional Youth Football (2023)
Journal Article
McMahon, J. J., Ripley, N. J., Comfort, P., Robles-Palazón, F. J., Fahey, J. T., Badby, A. J., & Bramah, C. (2023). The Kneeling Isometric Plantar Flexor Test: Preliminary Reliability and Feasibility in Professional Youth Football. Journal of Functional Morphology and Kinesiology, 8(4), 164. https://doi.org/10.3390/jfmk8040164

Calf injuries are common in professional football; thus, the establishment of reliable and time-efficient methods of measuring the peak force capabilities of the plantar flexors with equipment that is accessible to football practitioners is valuable.... Read More about The Kneeling Isometric Plantar Flexor Test: Preliminary Reliability and Feasibility in Professional Youth Football.

Rapid force generation during unilateral isometric hamstring assessment: reliability and relationship to maximal force. (2023)
Journal Article
Ripley, N., Fahey, J., Cuthbert, M., McMahon, J., & Comfort, P. (2023). Rapid force generation during unilateral isometric hamstring assessment: reliability and relationship to maximal force. Sports Biomechanics, 1-12. https://doi.org/10.1080/14763141.2023.2276316

Limited research has reported the reliability of rapid force generation characteristics during isometric assessments of the hamstrings. Therefore, the purpose of the present study was to determine the between-session reliability of rapid force genera... Read More about Rapid force generation during unilateral isometric hamstring assessment: reliability and relationship to maximal force..

Development Pathways for the Sport Scientist: A Process for the United States (2023)
Journal Article
Gleason, B. H., Suchomel, T. J., Pyne, D. B., Comfort, P., McMahon, E., Hornsby, W. G., …Stone, M. H. (2023). Development Pathways for the Sport Scientist: A Process for the United States. Strength and Conditioning Journal, https://doi.org/10.1519/ssc.0000000000000804

A variety of sport organizations employ sport scientists (SSs) in a range of capacities to support team operations, whereas universities employ SSs in academic (teaching and research), consulting, and support roles. Despite the growth in professional... Read More about Development Pathways for the Sport Scientist: A Process for the United States.

Force plate methodologies applied to injury profiling and rehabilitation in sport: A scoping review protocol (2023)
Journal Article
Robles-Palazón, F. J., Comfort, P., Ripley, N. J., Herrington, L., Bramah, C., & McMahon, J. J. (in press). Force plate methodologies applied to injury profiling and rehabilitation in sport: A scoping review protocol. PloS one, 18(10), e0292487. https://doi.org/10.1371/journal.pone.0292487

Musculoskeletal injuries are a common health problem among sporting populations. Such injuries come with a high financial burden to the involved organisations and can have a detrimental impact on the career attainment of injured individuals. Force pl... Read More about Force plate methodologies applied to injury profiling and rehabilitation in sport: A scoping review protocol.

Predicting Weight Category–Specific Performance Zones for Olympic, World, and European Weightlifting Competitions (2023)
Journal Article
Chavda, S., Comfort, P., Lake, J. P., Bishop, C., & Turner, A. N. (2023). Predicting Weight Category–Specific Performance Zones for Olympic, World, and European Weightlifting Competitions. Journal of Strength and Conditioning Research, 37(10), 2038-2045. https://doi.org/10.1519/jsc.0000000000004511

Understanding the total likely required weight category to achieve a specific rank within a specific competition can aid in the long-term and short-term preparation and tactics for performance teams. The primary objective of this investigation was to... Read More about Predicting Weight Category–Specific Performance Zones for Olympic, World, and European Weightlifting Competitions.

The Good Morning—Exercise Technique and Exercise Selection Principles (2023)
Journal Article
Ross, S., Comfort, P., & McMahon, J. (2023). The Good Morning—Exercise Technique and Exercise Selection Principles. Strength and Conditioning Journal, https://doi.org/10.1519/ssc.0000000000000802

The good morning is a barbell exercise that can be used to develop muscular strength and hypertrophy in the posterior chain (i.e., hamstring muscles, gluteal muscles, spinal erectors, calf complex). The exercise uses a hip hinge motion with the barbe... Read More about The Good Morning—Exercise Technique and Exercise Selection Principles.