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Mr John McMahon's Outputs (100)

Effect of sampling frequency on isometric midthigh-pull kinetics (2016)
Journal Article
Dos’Santos, T., Jones, P., Kelly, J., McMahon, J., Comfort, P., & Thomas, C. (2016). Effect of sampling frequency on isometric midthigh-pull kinetics. International Journal of Sports Physiology and Performance, 11(2), 255-260. https://doi.org/10.1123/ijspp.2015-0222

Purpose: Skeletal-muscle function can be evaluated using force–times curves generated via the isometric midthigh pull (IMTP). Various sampling frequencies (500–1000 Hz) have been used for IMTP assessments; however, no research has investigated the in... Read More about Effect of sampling frequency on isometric midthigh-pull kinetics.

Relationships between lower body muscle structure and isometric mid-thigh pull peak force (2015)
Journal Article
McMahon, J., Stapley, J., Suchomel, T., & Comfort, P. (2015). Relationships between lower body muscle structure and isometric mid-thigh pull peak force. Journal of trainology, 4(2), 43-48. https://doi.org/10.17338/trainology.4.2_43

Objectives: To explore relationships between aspects of vastus lateralis (VL) and medial gastrocnemius (MG) muscle structure (muscle thickness, fascicle length and pennation angle) and isometric mid-thigh pull (IMTP) peak force capacity. Design and M... Read More about Relationships between lower body muscle structure and isometric mid-thigh pull peak force.

Relationships between speed, change of direction and jump performance with cricket specific speed tests in male academy cricketers (2015)
Journal Article
Foden, M., Astley, S., McMahon, J., Comfort, P., Matthews, M., & Jones, P. (2015). Relationships between speed, change of direction and jump performance with cricket specific speed tests in male academy cricketers. Journal of trainology, 4(2), 37-42. https://doi.org/10.17338/trainology.4.2_37

Objectives: The aim of this study was to investigate the relationships between general speed and change of direction speed and‘cricket specific’ speed tests and the relationships between jump performance and speed and change of direction ability in m... Read More about Relationships between speed, change of direction and jump performance with cricket specific speed tests in male academy cricketers.

Reliability of maximal back squat and power clean performances in inexperienced athletes (2015)
Journal Article
Comfort, P., & McMahon, J. (2015). Reliability of maximal back squat and power clean performances in inexperienced athletes. Journal of Strength and Conditioning Research, 29(11), 3089-3096. https://doi.org/10.1519/JSC.0000000000000815

The aim of the study was to determine between-session reliability of maximal weight lifted during the back squat and power clean, in inexperienced athletes, and to identify the smallest detectable difference between sessions. Forty-four collegiate at... Read More about Reliability of maximal back squat and power clean performances in inexperienced athletes.

A correction equation for jump height measured using the just jump system (2015)
Journal Article
McMahon, J., Jones, P., & Comfort, P. (2016). A correction equation for jump height measured using the just jump system. International Journal of Sports Physiology and Performance, 11(4), 555-557. https://doi.org/10.1123/ijspp.2015-0194

Purpose: To determine the concurrent validity and reliability of the popular Just Jump system (JJS) for determining jump height and, if necessary, provide a correction equation for future reference. Methods: Eighteen male college athletes performed 3... Read More about A correction equation for jump height measured using the just jump system.

Relationships between lower body muscle structure and maximal power clean performance (2015)
Journal Article
McMahon, J., Turner, A., & Comfort, P. (2015). Relationships between lower body muscle structure and maximal power clean performance. Journal of trainology, 4(2), 32-36. https://doi.org/10.17338/trainology.4.2_32

Objectives: Correlational studies have linked distinct characteristics of lower body muscle structure (e.g. muscle thickness and pennation angle) to key variables attained during various tasks (e.g. squatting and jumping) which are beneficial to athl... Read More about Relationships between lower body muscle structure and maximal power clean performance.

Relationships between jump and sprint performance in first-class county cricketers (2015)
Journal Article
Carr, C., McMahon, J., & Comfort, P. (2015). Relationships between jump and sprint performance in first-class county cricketers. Journal of trainology, 4(1), 1-5. https://doi.org/10.17338/trainology.4.1_1

Objectives: Research across a number of sports has identified a meaningful relationship between jump and sprint performance. The aim of this study was to investigate these relationships in first-class county cricketers. Design and Methods: Using a wi... Read More about Relationships between jump and sprint performance in first-class county cricketers.

Effect of knee and trunk angle on kinetic variables during the isometric mid-thigh pull : test-retest reliability (2015)
Journal Article
Comfort, P., Jones, P., McMahon, J., & Newton, R. (2015). Effect of knee and trunk angle on kinetic variables during the isometric mid-thigh pull : test-retest reliability. International Journal of Sports Physiology and Performance, 10(1), 58-63. https://doi.org/10.1123/ijspp.2014-0077

The isometric midthigh pull (IMTP) has been used to monitor changes in force, maximum rate of force development (mRFD), and impulse, with performance in this task being associated with performance in athletic tasks. Numerous postures have been adopte... Read More about Effect of knee and trunk angle on kinetic variables during the isometric mid-thigh pull : test-retest reliability.

A comparison of maximal power clean performances performed from the floor, knee and mid-thigh (2014)
Journal Article
Kelly, J., McMahon, J., & Comfort, P. (2014). A comparison of maximal power clean performances performed from the floor, knee and mid-thigh. Journal of trainology, 3(2), 53-56. https://doi.org/10.17338/trainology.3.2_53

Objectives: This study aimed to compare one repetition maximum (1RM) power clean performances, performed from the floor, the knee and from mid-thigh, to determine the differences between variations. Design and Methods: Using a within subjects repeate... Read More about A comparison of maximal power clean performances performed from the floor, knee and mid-thigh.

The effect of peer tutoring on academic achievement (2014)
Journal Article
Comfort, P., & McMahon, J. (2014). The effect of peer tutoring on academic achievement. Journal of Applied Research in Higher Education, 6(1), 168-175. https://doi.org/10.1108/JARHE-06-2012-0017

Purpose – The purpose of this paper is to determine the effects of peer tutoring on the academic achievement, during practical assessments, of the tutors and tutees.

Design/methodology/approach – Final year students on an undergraduate Sports Scie... Read More about The effect of peer tutoring on academic achievement.

Authors’ reply to Morin and colleagues (2013)
Journal Article
Pearson, S., & McMahon, J. (2013). Authors’ reply to Morin and colleagues. Sports Medicine, 43(2), 155-156. https://doi.org/10.1007/s40279-012-0016-7

We are grateful for the feedback provided by Dr Jean-Benoit Morin [1] and colleagues in relation to our recently published review article regarding lower limb mechanical properties [2]. The primary purpose of this short reply is to reiterate the aims... Read More about Authors’ reply to Morin and colleagues.

No kinetic differences during variations of the power clean in inexperienced collegiate athletes (2013)
Journal Article
Comfort, P., McMahon, J., & Fletcher, C. (2013). No kinetic differences during variations of the power clean in inexperienced collegiate athletes. Journal of Strength and Conditioning Research, 27(2), 363-368. https://doi.org/10.1519/JSC.0b013e31825489c6

Previous research has identified that the second pull phase of the clean generates the greatest power output and that the midthigh variations of the power clean also result in the greatest force and power output in male athletes; however, no research... Read More about No kinetic differences during variations of the power clean in inexperienced collegiate athletes.

Lower limb mechanical properties : determining factors and implications for performance (2012)
Journal Article
Pearson, S., & McMahon, J. (2012). Lower limb mechanical properties : determining factors and implications for performance. Sports Medicine, 42(11), 929-940. https://doi.org/10.1007/BF03262304

Limb stiffness or musculotendinous stiffness (MTS) has previously been examined in relation to performance and characterized using a number of different methods. However, the fact that MTS shows only low to moderate correlations to performances may i... Read More about Lower limb mechanical properties : determining factors and implications for performance.

Lower limb stiffness: Effect on performance and training considerations (2012)
Journal Article
McMahon, J., Comfort, P., & Pearson, S. (2012). Lower limb stiffness: Effect on performance and training considerations. Strength and Conditioning Journal, 34(6), 94-101. https://doi.org/10.1519/SSC.0b013e3182781b4e

Summary: the aim of this review was to summarize the research to date on lower limb stiffness in relation to both its effect on performance and training considerations. Evidence suggests that some amount of lower limb stiffness is required for succes... Read More about Lower limb stiffness: Effect on performance and training considerations.

Determination of optimal load during the power clean, in collegiate athletes (2012)
Journal Article
Comfort, P., Fletcher, C., & McMahon, J. (2012). Determination of optimal load during the power clean, in collegiate athletes. Journal of Strength and Conditioning Research, 26(11), 2962-2969. https://doi.org/10.1519/JSC.0b013e318245bed4

Although previous research has been performed in similar areas of study, the optimal load for the development of peak power during training remains controversial, and this has yet to be established in collegiate level athletes. The purpose of this st... Read More about Determination of optimal load during the power clean, in collegiate athletes.

Lower limb stiffness: Considerations for female athletes
Journal Article
McMahon, J., Comfort, P., & Pearson, S. Lower limb stiffness: Considerations for female athletes. Strength and Conditioning Journal, 34(5), 70-73. https://doi.org/10.1519/SSC.0b013e318268131f

Women demonstrate lower limb stiffness recruitment strategies, which may predispose them to greater sustainment of lower limb injuries, particularly to the anterior cruciate ligament. To positively alter such strategies in women, lower limb muscle st... Read More about Lower limb stiffness: Considerations for female athletes.