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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.

Effect of Sampling Frequency on a Unilateral Isometric Hamstring Strength Assessment Using Force Plates (2024)
Journal Article
Ripley, N., McMahon, J., & Comfort, P. (in press). Effect of Sampling Frequency on a Unilateral Isometric Hamstring Strength Assessment Using Force Plates. #Journal not on list,

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.

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..

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.

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.

Changes in Body Mass and Movement Strategy Maintain Jump Height Immediately after Soccer Match (2023)
Journal Article
Spencer, R., Sindall, P., M. Hammond, K., J. Atkins, S., Quinn, M., & McMahon, J. (2023). Changes in Body Mass and Movement Strategy Maintain Jump Height Immediately after Soccer Match. Applied Sciences, 13(12), 7188. https://doi.org/10.3390/app13127188

A countermovement jump (CMJ) performed on a force plate is commonly applied in soccer to quantify acute neuromuscular fatigue (NMF), which may manifest immediately following soccer match play. Jump height (JH) is the main outcome variable reported fo... Read More about Changes in Body Mass and Movement Strategy Maintain Jump Height Immediately after Soccer Match.

Microdosing: A Conceptual Framework for use as Programming Strategy for Resistance Training in Team Sports (2023)
Journal Article
Cuthbert, M., Haff, G. G., McMahon, J. J., Evans, M., & Comfort, P. (2023). Microdosing: A Conceptual Framework for use as Programming Strategy for Resistance Training in Team Sports. Strength and Conditioning Journal, Publish Ahead of Print, https://doi.org/10.1519/ssc.0000000000000786

Micro-dosing, in the context of resistance training, has increased in popularity within sporting environments where it is frequently used among strength and conditioning professionals. Although there is a clear definition for the concept within the l... Read More about Microdosing: A Conceptual Framework for use as Programming Strategy for Resistance Training in Team Sports.

The Validity of Hawkin Dynamics Wireless Dual Force Plates for Measuring Countermovement Jump and Drop Jump Variables (2023)
Journal Article
J. Badby, A., D. Mundy, P., Comfort, P., Lake, J. P., & McMahon, J. (2023). The Validity of Hawkin Dynamics Wireless Dual Force Plates for Measuring Countermovement Jump and Drop Jump Variables. Sensors, 23(10), 4820. https://doi.org/10.3390/s23104820

Force plate testing is becoming more commonplace in sport due to the advent of commercially available, portable, and affordable force plate systems (i.e., hardware and software). Following the validation of the Hawkin Dynamics Inc. (HD) proprietary s... Read More about The Validity of Hawkin Dynamics Wireless Dual Force Plates for Measuring Countermovement Jump and Drop Jump Variables.

A systematic review of the different calculation methods for measuring jump height during the countermovement and drop jump tests (2023)
Journal Article
Xu, J., Turner, A., Comfort, P., Harry, J., McMahon, J., Chavda, S., & Bishop, C. (in press). A systematic review of the different calculation methods for measuring jump height during the countermovement and drop jump tests. Sports Medicine, 11, https://doi.org/10.1007/s40279-023-01828-x

Background The height obtained during the countermovement jump (CMJ) and drop jump (DJ) tests have been measured by numerous studies using different calculation methods and pieces of equipment. However, the differences in calculation methods and e... Read More about A systematic review of the different calculation methods for measuring jump height during the countermovement and drop jump tests.

Effect of additional Nordic hamstring exercise or sprint training on the modifiable risk factors of hamstring strain injuries and performance (2023)
Journal Article
Ripley, N., Cuthbert, M., Comfort, P., & McMahon, J. (2023). Effect of additional Nordic hamstring exercise or sprint training on the modifiable risk factors of hamstring strain injuries and performance. PLoS ONE, 18(3), https://doi.org/10.1371/journal.pone.0281966

The Nordic hamstring exercise (NHE) has commonly been investigated in isolation, however, within practice multiple modalities are commonly incorporated. However, the NHE has a low level of compliance within sport, with sprinting being potentially bei... Read More about Effect of additional Nordic hamstring exercise or sprint training on the modifiable risk factors of hamstring strain injuries and performance.

The Effect of Rest Redistribution on Kinetic and Kinematic Variables During the Countermovement Shrug. (2022)
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 Countermovement Shrug. Journal of Strength and Conditioning Research, 37(7), 1358-1366. https://doi.org/10.1519/JSC.0000000000004238

This study compared the effects of rest redistribution (RR) on kinetic and kinematic variables during the countermovement shrug (CMS). Twenty-one male subjects (age 27.2 ± 3.3. years, height 1.78 ± 0.07 m, body mass 77.2 ±10.6 kg, relative one repeti... Read More about The Effect of Rest Redistribution on Kinetic and Kinematic Variables During the Countermovement Shrug..

Force plate-derived countermovement jump normative data and benchmarks for professional Rugby League players (2022)
Journal Article
McMahon, J., Ripley, N., & Comfort, P. (2022). Force plate-derived countermovement jump normative data and benchmarks for professional Rugby League players. Sensors, 22(22), 8669. https://doi.org/10.3390/s22228669

The countermovement jump (CMJ) is an important test in rugby league (RL), and the force plate is the recommended assessment device, as it permits the calculation of several variables that explain jump strategy, alongside jump height. The purpose of t... Read More about Force plate-derived countermovement jump normative data and benchmarks for professional Rugby League players.

Comparing biomechanical time series data across countermovement shrug load (2022)
Journal Article
Meechan, D., McErlain-Naylor, S., McMahon, J., Suchomel, T., & Comfort, P. (2022). Comparing biomechanical time series data across countermovement shrug load. Journal of Sports Sciences, 40(15), 1658-1667. https://doi.org/10.1080/02640414.2022.2091351

The effect of load on time series data has yet to be investigated during weightlifting derivatives. This study compared the effect of load on the force-time and velocity-time curves during the countermovement shrug (CMS). Twenty-nine males performed... Read More about Comparing biomechanical time series data across countermovement shrug load.

A biomechanical analysis of weightlifting pulling derivatives and their application to performance programming (2022)
Thesis
Meechan, D. A biomechanical analysis of weightlifting pulling derivatives and their application to performance programming. (Thesis). University of Salford

The aims of the studies within this thesis were to determine if kinetics and kinematics differences occur between weightlifting pulling derivatives across loads, and to provide greater context regarding biomechanical time series data across loads. Ad... Read More about A biomechanical analysis of weightlifting pulling derivatives and their application to performance programming.

Comparison between methods to estimate bicep femoris fascicle length from three estimation equations using a 10 cm ultrasound probe (2022)
Journal Article
Ripley, N., Comfort, P., & McMahon, J. (2022). Comparison between methods to estimate bicep femoris fascicle length from three estimation equations using a 10 cm ultrasound probe. Measurement in Physical Education and Exercise Science, 27(1), 43-50. https://doi.org/10.1080/1091367X.2022.2063689

The aim of the present study was to determine the reliability and differences between three fascicle length (FL) estimation methods when utilizing a 10-cm ultrasound (US) probe. Thirteen males (24.1 ± 3.8 years, 79.3 ± 14 kg, 179 ± 6.6 cm) participat... Read More about Comparison between methods to estimate bicep femoris fascicle length from three estimation equations using a 10 cm ultrasound probe.

Identifying and reporting position-specific countermovement jump outcome and phase characteristics within rugby league. (2022)
Journal Article
McMahon, J., Lake, J., & Comfort, P. (2022). Identifying and reporting position-specific countermovement jump outcome and phase characteristics within rugby league. PLoS ONE, 17(3), e0265999. https://doi.org/10.1371/journal.pone.0265999

The countermovement jump (CMJ) has been suggested to be an important test of neuromuscular performance for rugby league (RL) players. Identifying force platform-derived CMJ variables that may be more applicable to RL positions (e.g., forwards and bac... Read More about Identifying and reporting position-specific countermovement jump outcome and phase characteristics within rugby league..

No differences in weightlifting overhead pressing exercises kinetics (2021)
Journal Article
Soriano, M., Lake, J., Comfort, P., Suchomel, T., McMahon, J., Jiménez-Ormeño, E., & Sainz de Baranda, P. (2021). No differences in weightlifting overhead pressing exercises kinetics. Sports Biomechanics, 1-13. https://doi.org/10.1080/14763141.2021.1993983

This study aimed to compare the kinetics between the push press (PP), push jerk (PJ), and split jerk (SJ). Sixteen resistance-trained participants (12 men and 4 women; age: 23.8 ± 4.4 years; height: 1.7 ± 0.1 m; body mass: 75.7 ± 13.0 kg; weightlifti... Read More about No differences in weightlifting overhead pressing exercises kinetics.