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All Outputs (254)

A methodological approach to quantifying plyometric intensity (2016)
Journal Article
Jarvis, M., Graham-Smith, P., & Comfort, P. (2016). A methodological approach to quantifying plyometric intensity. Journal of Strength and Conditioning Research, 30(9), 2522-2532. https://doi.org/10.1519/JSC.0000000000000518

In contrast to other methods of training, the quantification of plyometric exercise intensity is poorly defined. The purpose of this study was to evaluate the suitability of a range of neuromuscular and mechanical variables to describe the intensity... Read More about A methodological approach to quantifying plyometric intensity.

Mechanical determinants of faster change of direction speed performance in male athletes (2016)
Journal Article
Dos'Santos, T., Thomas, C., Jones, P., & Comfort, P. (2017). Mechanical determinants of faster change of direction speed performance in male athletes. Journal of Strength and Conditioning Research, 31(3), 696-705. https://doi.org/10.1519/JSC.0000000000001535

Mechanical variables during change of directions for example braking and propulsive forces,impulses and ground contact times (GCT) have been identified as determinants of faster change of direction speed (CODS) performance. The purpose of this study... Read More about Mechanical determinants of faster change of direction speed performance in male athletes.

Effects of strength training on squat and sprint performance in soccer players (2016)
Journal Article
Styles, W., Matthews, M., & Comfort, P. (2016). Effects of strength training on squat and sprint performance in soccer players. Journal of Strength and Conditioning Research, 30(6), 1534-1539. https://doi.org/10.1519/JSC.0000000000001243

Researchers have demonstrated that increases in strength result in increases in athletic performance, although the development of strength is still neglected in some sports. Our aim was to determine whether a simple in-season strength training progra... Read More about Effects of strength training on squat and sprint performance in soccer players.

Within- and between-session reliability of medial gastrocnemius architectural properties (2016)
Journal Article
McMahon, J., Turner, A., & Comfort, P. (2016). Within- and between-session reliability of medial gastrocnemius architectural properties. Biology of Sport, 33(2), 185-188. https://doi.org/10.5604/20831862.1200511

This study aimed to determine the within- and between-session reliability of medial gastrocnemius (MG)
architecture (e.g. muscle thickness (MT), fascicle length (FL) and pennation angle (PA)), as derived via
ultrasonography followed by manual digit... Read More about Within- and between-session reliability of medial gastrocnemius architectural properties.

Comparison of peak power output during exercises with similar lower-limb kinematics (2016)
Journal Article
with similar lower-limb kinematics. Journal of trainology, 5(1), 1-5. https://doi.org/10.17338/trainology.5.1_1

Objectives: The aim of this investigation was to compare peak power between the mid-thigh power clean, squat jump and push press.
Design and Methods: Eleven recreationally trained men (age 22.2 ± 3.5 yrs; height 178.6 ± 8.5 cm; body mass 88.7 ± 13.... Read More about Comparison of peak power output during exercises with similar lower-limb kinematics.

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.

Reliability of the 30-15 intermittent fitness test in semiprofessional soccer players (2016)
Journal Article
Thomas, C., Dos’Santos, T., Jones, P., & Comfort, P. (2016). Reliability of the 30-15 intermittent fitness test in semiprofessional soccer players. International Journal of Sports Physiology and Performance, 11(2), 172-175. https://doi.org/10.1123/ijspp.2015-0056

Purpose: The purpose of this investigation was to determine the reliability of the 30-15 Intermittent Fitness Test (30-15IFT) in semiprofessional soccer players. Methods: Fourteen male semiprofessional soccer players performed the 30-15IFT on 2 occas... Read More about Reliability of the 30-15 intermittent fitness test in semiprofessional soccer players.

Reliability of hop distance and frontal-plane dynamic knee valgus angle during single-leg horizontal hop test (2015)
Journal Article
valgus angle during single-leg horizontal hop test. Journal of Athletic Enhancement, 4(6), https://doi.org/10.4172/2324-9080.1000218

Context: Single-leg hop for distance (SHD) performance and twodimensional
(2-D) video assessment of frontal-plane knee valgus,
during the single-leg landings, have been reported to identify the
risk of knee injuries such as patellofemoral pain syn... Read More about Reliability of hop distance and frontal-plane dynamic knee valgus angle during single-leg horizontal hop test.

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.

Joint kinetics and kinematics during common lower limb rehabilitation exercises (2015)
Journal Article
Comfort, P., Jones, P., Smith, L., & Herrington, L. (2015). Joint kinetics and kinematics during common lower limb rehabilitation exercises. Journal of Athletic Training, 50(10), 1011-1018. https://doi.org/10.4085/1062-6050-50.9.05

Context: Unilateral body-weight exercises are commonly used to strengthen the lower limbs during rehabilitation after injury, but data comparing the loading of the limbs during these tasks are limited.
Objective: To compare joint kinetics and kinem... Read More about Joint kinetics and kinematics during common lower limb rehabilitation exercises.

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.

Psychological strategies included by strength and conditioning coaches in applied strength and conditioning (2015)
Journal Article
Radcliffe, J., Comfort, P., & Fawcett, T. (2015). Psychological strategies included by strength and conditioning coaches in applied strength and conditioning. Journal of Strength and Conditioning Research, 29(9), 2641-2654. https://doi.org/10.1519/JSC.0000000000000919

This study provided the basis by which professional development needs can be addressed and add to the applied sport psychology literature from an underresearched sport domain. This study endeavored to use qualitative methods to explore the specific t... Read More about Psychological strategies included by strength and conditioning coaches in applied strength and conditioning.

An investigation into the relationship between maximum isometric strength and vertical jump performance (2015)
Journal Article
Thomas, C., Jones, P., Rothwell, J., Chiang, C., & Comfort, P. (2015). An investigation into the relationship between maximum isometric strength and vertical jump performance. Journal of Strength and Conditioning Research, 29(8), 2176-2185. https://doi.org/10.1519/JSC.0000000000000866

Research has demonstrated a clear relationship between dynamic strength and vertical jump (VJ) performance; however, the relationship of isometric strength and VJ performance has been studied less extensively. The aim of this study was to determine t... Read More about An investigation into the relationship between maximum isometric strength and vertical jump performance.

An investigation into the relationship between maximum Isometric strength and vertical jump performance (2015)
Journal Article
Thomas, C., Jones, P., Rothwell, J., Chiang, C., & Comfort, P. (2015). An investigation into the relationship between maximum Isometric strength and vertical jump performance. Journal of Strength and Conditioning Research, 29(8), 2176-2185. https://doi.org/10.1519/jsc.0000000000000866

Abstract: Thomas, C, Jones, PA, Rothwell, J, Chiang, CY, and Comfort, P. An investigation into the relationship between maximum isometric strength and vertical jump performance. J Strength Cond Res 29(8): 2176–2185, 2015—Research has demonstrated a c... Read More about An investigation into the relationship between maximum Isometric strength and vertical jump performance.

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.

Reliability of the dynamic strength index in college athletes (2015)
Journal Article
Thomas, C., Jones, P., & Comfort, P. (2015). Reliability of the dynamic strength index in college athletes. International Journal of Sports Physiology and Performance, 10(5), 542-545. https://doi.org/10.1123/ijspp.2014-0255

Purpose: To determine the reliability of the Dynamic Strength Index (DSI) in college athletes. Method: Nineteen male college athletes performed the squat jump (SJ) and isometric midthigh pull (IMTP) to determine peak force, on 2 separate days. Relia... Read More about Reliability of the dynamic strength index in college athletes.

A preliminary study into the effect of jumping–landing training and strength training on frontal plane projection angle (2015)
Journal Article
Herrington, L., Munro, A., & Comfort, P. (2015). A preliminary study into the effect of jumping–landing training and strength training on frontal plane projection angle. Manual Therapy, 20(5), 680-685. https://doi.org/10.1016/j.math.2015.04.009

The presence of increased knee valgus angles during functional tasks has been associated with a range of knee pathologies. A number of different exercise interventions have been undertaken to improve knee alignment during functional tasks. The most s... Read More about A preliminary study into the effect of jumping–landing training and strength training on frontal plane projection angle.