All Outputs (98)

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.

How to use force sensors for resistance training in daily practice (2021)
Book Chapter
Sánchez-Sixto, A., & McMahon, J. (2022). How to use force sensors for resistance training in daily practice. In A. Muñoz-López, R. Taiar, & B. Sañudo (Eds.), Resistance training methods : from theory to practice (195-210). Springer. https://doi.org/10.1007/978-3-030-81989-7_11

The testing and assessment of resistance training exercises is a fundamental aspect for coaches and athletes. Through the force-time data measured by force plates, we have the possibility to calculate velocity, displacement, work, and power values of... Read More about How to use force sensors for resistance training in daily practice.

Kinematic and neuromuscular measures of intensity during drop jumps in female volleyball players (2021)
Journal Article
Torres-Banduc, M., Ramirez-Campillo, R., Andrade, D., Calleja-González, J., Nikolaidis, P., McMahon, J., & Comfort, P. (2021). Kinematic and neuromuscular measures of intensity during drop jumps in female volleyball players. Frontiers in Psychology, 12, 724070. https://doi.org/10.3389/fpsyg.2021.724070

The aim of this study was to assess drop jump (DJ) performance variables (jump height, contact time, and reactive strength index) concomitant to surface electromyography (sEMG) of lower limb muscles during DJs from different drop heights (intensities... Read More about Kinematic and neuromuscular measures of intensity during drop jumps in female volleyball players.

A proposed method for evaluating drop jump performance with one force platform (2021)
Journal Article
McMahon, J., Lake, J., Stratford, C., & Comfort, P. (2021). A proposed method for evaluating drop jump performance with one force platform. Biomechanics, 1(2), 178-189. https://doi.org/10.3390/biomechanics1020015

The drop jump (DJ) is commonly utilised to assess athletes. The criterion two force platform (2FP) method of assessing DJ performance involves two adjacent force platforms, one for the box and one for the athlete to rebound from. Most researchers and... Read More about A proposed method for evaluating drop jump performance with one force platform.

Effects of spaceflight on musculoskeletal health : a systematic review and meta-analysis, considerations for interplanetary travel (2021)
Journal Article
Comfort, P., McMahon, J., Jones, P., Cuthbert, M., Kendall, K., Lake, J., & Haff, G. (2021). Effects of spaceflight on musculoskeletal health : a systematic review and meta-analysis, considerations for interplanetary travel. Sports Medicine, 51(10), 2097-2114. https://doi.org/10.1007/s40279-021-01496-9

If interplanetary travel is to be successful over the coming decades, it is essential that countermeasures to minimize deterioration of the musculoskeletal system are as effective as possible, given the increased duration of spaceflight associated wi... Read More about Effects of spaceflight on musculoskeletal health : a systematic review and meta-analysis, considerations for interplanetary travel.

Relationships among countermovement vertical jump performance metrics, strategy variables, and inter-limb asymmetry in females (2021)
Journal Article
Harry, J., Barker, L., Tinsley, G., Krzyszkowski, J., Chowning, L., McMahon, J., & Lake, J. (2021). Relationships among countermovement vertical jump performance metrics, strategy variables, and inter-limb asymmetry in females. Sports Biomechanics, 1-19. https://doi.org/10.1080/14763141.2021.1908412

Dependent variables commonly studied during countermovement vertical jump (CMVJ) tests largely stem from male-only studies despite females’distinct energy storage and reutilisation strategies. This could limit progress among females seeking increased... Read More about Relationships among countermovement vertical jump performance metrics, strategy variables, and inter-limb asymmetry in females.

Effects of variations in resistance training frequency on strength development in well-trained populations and implications for in-season athlete training : a systematic review and meta-analysis (2021)
Journal Article
Cuthbert, M., Haff, G., Arent, S., Ripley, N., McMahon, J., Evans, M., & Comfort, P. (2021). Effects of variations in resistance training frequency on strength development in well-trained populations and implications for in-season athlete training : a systematic review and meta-analysis. Sports Medicine, 51(9), 1967-1982. https://doi.org/10.1007/s40279-021-01460-7

In-season competition and tournaments for team sports can be both long and congested, with some sports competing up to three times per week. During these periods of time, athletes need to prepare technically, tactically and physically for the next fi... Read More about Effects of variations in resistance training frequency on strength development in well-trained populations and implications for in-season athlete training : a systematic review and meta-analysis.

Electromyographical Differences Between the Hyperextension and Reverse-Hyperextension (2021)
Journal Article
Cuthbert, M., Ripley, N. J., Suchomel, T. J., Alejo, R., McMahon, J. J., & Comfort, P. (2021). Electromyographical Differences Between the Hyperextension and Reverse-Hyperextension. Journal of Strength and Conditioning Research, 35(6), 1477-1483. https://doi.org/10.1519/jsc.0000000000004049

The aims of this study were to compare muscle activation of the erector spinae (ES), gluteus maximus (GMax), and biceps femoris (BF) during the hyperextension (HE) and reverse-HE (RHE) exercises. Ten subjects (age, 23 ± 4 years; height, 175.9 ± 6.9 c... Read More about Electromyographical Differences Between the Hyperextension and Reverse-Hyperextension.

Unilateral vs. bilateral hamstring strength assessments : comparing reliability and inter-limb asymmetries in female soccer players (2021)
Journal Article
Cuthbert, M., Comfort, P., Ripley, N., McMahon, J., Evans, M., & Bishop, C. (2021). Unilateral vs. bilateral hamstring strength assessments : comparing reliability and inter-limb asymmetries in female soccer players. Journal of Sports Sciences, 39(13), 1481-1488. https://doi.org/10.1080/02640414.2021.1880180

The aims in the present study were to assess reliability for two unilateral and two bilateral field-based hamstring assessments and compare magnitude, direction and agreement of inter-limb asymmetry between tests and sessions. Twenty-nine female socc... Read More about Unilateral vs. bilateral hamstring strength assessments : comparing reliability and inter-limb asymmetries in female soccer players.

Verbal instructions affect reactive strength index modified and time-series waveforms in basketball players (2021)
Journal Article
Sánchez-Sixto, A., McMahon, J., & Floría, P. (2021). Verbal instructions affect reactive strength index modified and time-series waveforms in basketball players. Sports Biomechanics, 1-11. https://doi.org/10.1080/14763141.2020.1836252

This study aimed to determine the effects of different verbal instructions, intended to affect the countermovement jump (CMJ) execution time, on the reactive strength index modified (RSI ) and the time-series waveforms. Thirteen male basketball playe... Read More about Verbal instructions affect reactive strength index modified and time-series waveforms in basketball players.

Modifiable risk factors of hamstring strain injury : assessment, performance and training (2021)
Thesis
Ripley, N. Modifiable risk factors of hamstring strain injury : assessment, performance and training. (Thesis). University of Salford

Hamstring strain injuries (HSIs), which are typically sustained during high velocity movements (i.e., sprinting or high velocity running), commonly involves the bicep femoris long head (BFLH). To date, the Nordic hamstring exercise (NHE) is the most... Read More about Modifiable risk factors of hamstring strain injury : assessment, performance and training.

The 10/5 repeated jumps test : are 10 repetitions and three trials necessary? (2020)
Journal Article
Stratford, C., Dos’Santos, T., & McMahon, J. (2021). The 10/5 repeated jumps test : are 10 repetitions and three trials necessary?. Biomechanics, 1(1), 1-14. https://doi.org/10.3390/biomechanics1010001

The purpose of this study was to identify whether ten repetitions and three trials were necessary to achieve stability in peak reactive strength index (RSI) during the 10/5 repeated jumps test (RJT). Twenty-five males, from multiple sports, performed... Read More about The 10/5 repeated jumps test : are 10 repetitions and three trials necessary?.

Association of jumping ability and maximum strength with dive distance in swimmers (2020)
Journal Article
Calderbank, J., Comfort, P., & McMahon, J. (2021). Association of jumping ability and maximum strength with dive distance in swimmers. International Journal of Sports Physiology and Performance, 16(2), 296-303. https://doi.org/10.1123/ijspp.2019-0773

Purpose: The aim of the current study was to investigate the relationship between dive distance (DD) and countermovement jump (CMJ) height, track start CMJ height, countermovement broad jump (CMBJ) distance, track start broad jump distance, and isome... Read More about Association of jumping ability and maximum strength with dive distance in swimmers.

Vertical jump testing in rugby league: a rationale for calculating take-off momentum (2020)
Journal Article
McMahon, J., Lake, J., Ripley, N., & Comfort, P. (2020). Vertical jump testing in rugby league: a rationale for calculating take-off momentum. Journal of Applied Biomechanics, 36(6), 370-374. https://doi.org/10.1123/JAB.2020-0100

The purpose of this study was to determine the usefulness of calculating jump take-off momentum in rugby league (RL) by exploring its relationship with sprint momentum, due to the latter being an important attribute of this sport. Twenty-five male RL... Read More about Vertical jump testing in rugby league: a rationale for calculating take-off momentum.

Vertical jump testing in rugby league : a rationale for calculating take-off momentum (2020)
Journal Article
McMahon, J., Lake, J., Ripley, N., & Comfort, P. (2020). Vertical jump testing in rugby league : a rationale for calculating take-off momentum. Journal of Applied Biomechanics, 36(6), 370-374. https://doi.org/10.1123/jab.2020-0100

The purpose of this study was to determine the usefulness of calculating jump take-off momentum in rugby league (RL) by exploring its relationship with sprint momentum, due to the latter being an important attribute of this sport. Twenty-five male RL... Read More about Vertical jump testing in rugby league : a rationale for calculating take-off momentum.

Countermovement jump standards in rugby league : what is a “good” performance? (2020)
Journal Article
McMahon, J., Lake, J., Dos'Santos, T., Jones, P., Thomasson, M., & Comfort, P. (2020). Countermovement jump standards in rugby league : what is a “good” performance?. Journal of Strength and Conditioning Research, 36(6), 1691-1698. https://doi.org/10.1519/JSC.0000000000003697

The countermovement jump (CMJ) is considered an important test in rugby league and the force platform is the recommended tool for assessing CMJ performance in this cohort. Due to inconsistent methods applied across previous studies, there is curren... Read More about Countermovement jump standards in rugby league : what is a “good” performance?.

The effect of training with weightlifting catching or pulling derivatives on squat jump and countermovement jump force–time adaptations (2020)
Journal Article
Suchomel, T., McKeever, S., McMahon, J., & Comfort, P. (2020). The effect of training with weightlifting catching or pulling derivatives on squat jump and countermovement jump force–time adaptations. Journal of Functional Morphology and Kinesiology, 5(2), 28. https://doi.org/10.3390/jfmk5020028

The purpose of this study was to examine the changes in squat jump (SJ) and countermovement jump (CMJ) force−time curve characteristics following 10 weeks of training with either load-matched weightlifting catching (CATCH) or pulling derivatives (PUL... Read More about The effect of training with weightlifting catching or pulling derivatives on squat jump and countermovement jump force–time adaptations.

A comparison of kinetic and kinematic variables during the midthigh pull and countermovement shrug, across loads (2020)
Journal Article
Meechan, D., Suchomel, T., McMahon, J., & Comfort, P. (2020). A comparison of kinetic and kinematic variables during the midthigh pull and countermovement shrug, across loads. Journal of Strength and Conditioning Research, 34(7), 1830-1841. https://doi.org/10.1519/JSC.0000000000003288

This study compared kinetic and kinematic variables during the midthigh pull (MTP) and countermovement shrug (CMS). Eighteen men (age: 29.43 ± 3.95 years, height: 1.77 ± 0.08 m, body mass: 84.65 ± 18.79 kg, and 1 repetition maximum [1RM] power clean:... Read More about A comparison of kinetic and kinematic variables during the midthigh pull and countermovement shrug, across loads.

A comparison of kinetic and kinematic variables during the pull from the knee and hang pull, across loads (2020)
Journal Article
Meechan, D., McMahon, J., Suchomel, T., & Comfort, P. (2020). A comparison of kinetic and kinematic variables during the pull from the knee and hang pull, across loads. Journal of Strength and Conditioning Research, 34(7), 1819-1829. https://doi.org/10.1519/JSC.0000000000003593

Kinetic and kinematic variables during the pull from the knee (PFK) and hang pull (HP) were compared in this study. Eighteen men (age = 29.43 ± 3.95 years; height 1.77 ± 0.08 m; body mass 84.65 ± 18.79 kg) performed the PFK and HP with 40, 60, 80, 10... Read More about A comparison of kinetic and kinematic variables during the pull from the knee and hang pull, across loads.

Changes in early and maximal isometric force production in response to moderate- and high-load strength and power training (2020)
Journal Article
Comfort, P., Jones, P., Thomas, C., Dos'Santos, T., McMahon, J., & Suchomel, T. (2020). Changes in early and maximal isometric force production in response to moderate- and high-load strength and power training. Journal of Strength and Conditioning Research, https://doi.org/10.1519/JSC.0000000000003544

The aims of this study were to determine the changes in early (50-, 100-, 150-, 200-, 250 ms) and maximal isometric force production, in response to a 4-week period of moderate-load resistance training (60-82.5% 1 repetition maximum [1RM]), followed... Read More about Changes in early and maximal isometric force production in response to moderate- and high-load strength and power training.