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Prof Paul Comfort's Outputs (23)

The Benefits and Limitations of Predicting One Repetition Maximum Using the Load-Velocity Relationship (2019)
Journal Article
Alistair J., M., Kieran P., A., Maybanks, G., McDwyer, M., Dos'Santos, T., Paul A., J., …John J., M. (2019). The Benefits and Limitations of Predicting One Repetition Maximum Using the Load-Velocity Relationship. Strength and Conditioning Journal, 41(6), 28-40. https://doi.org/10.1519/SSC.0000000000000496

This review aims to provide an overview of the current load-velocity (L-V) approaches and their ability to estimate one-repetition maximum (1RM). The bench press exercise appears to be the most valid and reliable when applying this approach. The abil... Read More about The Benefits and Limitations of Predicting One Repetition Maximum Using the Load-Velocity Relationship.

Biomechanical determinants of the modified and traditional 505 change of direction speed test (2019)
Journal Article
DosʼSantos, T., McBurnie, A., Thomas, C., Comfort, P., & Jones, P. (2020). Biomechanical determinants of the modified and traditional 505 change of direction speed test. Journal of Strength and Conditioning Research, 34(5), 1285-1296. https://doi.org/10.1519/JSC.0000000000003439

The aim of this study was to investigate the whole-body biomechanical determinants of 180° change of direction (COD) performance. Sixty-one male athletes (age: 20.7 ± 3.8 years, height: 1.77 ± 0.06 m, mass: 74.7 ± 10.0 kg) from multiple sports (socce... Read More about Biomechanical determinants of the modified and traditional 505 change of direction speed test.

Reply to: "Comment on : the effect of Nordic hamstring exercise intervention volume on eccentric strength and muscle architecture adaptations : a systematic review and meta-analyses" (2019)
Journal Article
Cuthbert, M., Ripley, N., McMahon, J., Evans, M., Haff, G., & Comfort, P. (2020). Reply to: "Comment on : the effect of Nordic hamstring exercise intervention volume on eccentric strength and muscle architecture adaptations : a systematic review and meta-analyses". Sports Medicine, 50, 223-225. https://doi.org/10.1007/s40279-019-01245-z

Letter to the Editor

Correlational analysis between joint-level kinetics of countermovement jumps and weightlifting derivatives (2019)
Journal Article
Kipp, K., Suchomel, T., & Comfort, P. (2019). Correlational analysis between joint-level kinetics of countermovement jumps and weightlifting derivatives. Journal of Sports Science and Medicine, 18(4), 663-668

The purpose of this study was to investigate the mechanical similarity between net joint moments (NJM) of the countermovement jump (CMJ) and the hang power clean (HPC) and jump shrug (JS). Twelve male Lacrosse players performed three maximal effort C... Read More about Correlational analysis between joint-level kinetics of countermovement jumps and weightlifting derivatives.

Corrections to : The effect of Nordic hamstring exercise intervention volume on eccentric strength and muscle architecture adaptations : a systematic review and meta-analyses (2019)
Journal Article
Cuthbert, M., Ripley, N., McMahon, J., Evans, M., Haff, G., & Comfort, P. (2020). Corrections to : The effect of Nordic hamstring exercise intervention volume on eccentric strength and muscle architecture adaptations : a systematic review and meta-analyses. Sports Medicine, 50(1), 101-102. https://doi.org/10.1007/s40279-019-01208-4

Correction to: Sports Medicine https://doi.org/10.1007/s40279-019-01178-7

Comparison of countermovement jump–derived reactive strength index modified and underpinning force-time variables between super league and championship rugby league players (2019)
Journal Article
McMahon, J., Jones, P., & Comfort, P. (2019). Comparison of countermovement jump–derived reactive strength index modified and underpinning force-time variables between super league and championship rugby league players. Journal of Strength and Conditioning Research, https://doi.org/10.1519/JSC.0000000000003380

The countermovement jump (CMJ) is regularly tested in rugby league (RL), with recent work reporting reactive strength index modified (RSImod) to distinguish between levels of play. Differences in CMJ-derived RSImod and underpinning force-time variabl... Read More about Comparison of countermovement jump–derived reactive strength index modified and underpinning force-time variables between super league and championship rugby league players.

Normalization of early isometric force production as a percentage of peak force during multijoint isometric assessment (2019)
Journal Article
Comfort, P., Dos’Santos, T., Jones, P., McMahon, J., Suchomel, T., Bazyler, C., & Stone, M. (2020). Normalization of early isometric force production as a percentage of peak force during multijoint isometric assessment. International Journal of Sports Physiology and Performance, 15(4), 478-482. https://doi.org/10.1123/ijspp.2019-0217

Purpose: To determine the reliability of early force production (50-, 100-, 150-, 200-, 250 ms) relative to peak force (PF) during an isometric mid-thigh pull (IMTP) and assess the relationships between these variables. Methods: Male collegiate athle... Read More about Normalization of early isometric force production as a percentage of peak force during multijoint isometric assessment.

The effect of Nordic hamstring exercise intervention volume on eccentric strength and muscle architecture adaptations : a systematic review and meta-analyses (2019)
Journal Article
Cuthbert, M., Ripley, N., McMahon, J., Evans, M., Haff, G., & Comfort, P. (2020). The effect of Nordic hamstring exercise intervention volume on eccentric strength and muscle architecture adaptations : a systematic review and meta-analyses. Sports Medicine, 50, 83-99. https://doi.org/10.1007/s40279-019-01178-7

Although performance of the Nordic hamstring exercise (NHE) has been shown to elicit adaptations that may reduce hamstring strain injury (HSI) risk and occurrence, compliance in NHE interventions in professional soccer teams is low despite a high occ... Read More about The effect of Nordic hamstring exercise intervention volume on eccentric strength and muscle architecture adaptations : a systematic review and meta-analyses.

Field tests of performance and their relationship to age and anthropometric parameters in adolescent handball players (2019)
Journal Article
Hammami, M., Hermassi, S., Gaamouri, N., Aloui, G., Comfort, P., Shephard, R., & Chelly, M. (2019). Field tests of performance and their relationship to age and anthropometric parameters in adolescent handball players. Frontiers in Physiology, 10, 1124. https://doi.org/10.3389/fphys.2019.01124

Handball performance is influenced by age, anthropometric characteristics, technical skills, tactical understanding, and physical abilities. The aims of this study were (i) to determine differences in anthropometric characteristics and physical perfo... Read More about Field tests of performance and their relationship to age and anthropometric parameters in adolescent handball players.

The effect of training interventions on change of direction biomechanics associated with increased anterior cruciate ligament loading : a scoping review (2019)
Journal Article
Dos'Santos, T., Thomas, C., Comfort, P., & Jones, P. (2019). The effect of training interventions on change of direction biomechanics associated with increased anterior cruciate ligament loading : a scoping review. Sports Medicine, 49, 1837-1859. https://doi.org/10.1007/s40279-019-01171-0

Change of direction (COD) manoeuvres are associated with anterior cruciate ligament (ACL) injury risk due to the propensity to generate large multiplanar knee joint loads. Given the short- and long-term consequences of ACL injury, practitioners are i... Read More about The effect of training interventions on change of direction biomechanics associated with increased anterior cruciate ligament loading : a scoping review.

The effects of six-weeks change of direction speed and technique modification training on cutting performance and movement quality in male youth soccer players. (2019)
Journal Article
Dos'Santos, T., McBurnie, A., Comfort, P., & Jones, P. (2019). The effects of six-weeks change of direction speed and technique modification training on cutting performance and movement quality in male youth soccer players. Sports, 7(9), 205. https://doi.org/10.3390/sports7090205

Cutting manoeuvres are important actions associated with soccer performance and a key action associated with non-contact anterior cruciate ligament injury; thus, training interventions that can improve cutting performance and movement quality are of... Read More about The effects of six-weeks change of direction speed and technique modification training on cutting performance and movement quality in male youth soccer players..

The effect of load placement on the power production characteristics of three lower extremity jumping exercises (2019)
Journal Article
Suchomel, T. J., McKeever, S. M., Sijuwade, O., Carpenter, L., McMahon, J., Loturco, I., & Comfort, P. (2019). The effect of load placement on the power production characteristics of three lower extremity jumping exercises. Journal of Human Kinetics, 68(1), 109-122. https://doi.org/10.2478/hukin-2019-0060

The purpose of this study was to compare the power production characteristics of the jump squat (JS), hexagonal barbell jump (HEXJ), and jump shrug (JShrug) across a spectrum of relative loads. Fifteen resistance-trained men completed three testing s... Read More about The effect of load placement on the power production characteristics of three lower extremity jumping exercises.

Changes in performance markers and wellbeing in elite senior professional rugby union players during a pre-season period : analysis of the differences across training phases (2019)
Journal Article
Grainger, A., Neville, R., Ditroilo, M., & Comfort, P. (2020). Changes in performance markers and wellbeing in elite senior professional rugby union players during a pre-season period : analysis of the differences across training phases. Journal of Science and Medicine in Sport, 23(1), 20-26. https://doi.org/10.1016/j.jsams.2019.08.012

Objectives: To assess the magnitude of change and association with variation in training load of two
performance markers and wellbeing, over three pre-season training blocks, in elite rugby union athletes.
Design: Observational.
Methods: Twenty-tw... Read More about Changes in performance markers and wellbeing in elite senior professional rugby union players during a pre-season period : analysis of the differences across training phases.

The reliability and validity of the bar-mounted PUSH BandTM 2.0 during bench press with moderate and heavy loads (2019)
Journal Article
Lake, J., Augustus, S., Austin, K., Comfort, P., McMahon, J., Mundy, P., & Haff, G. (2019). The reliability and validity of the bar-mounted PUSH BandTM 2.0 during bench press with moderate and heavy loads. Journal of Sports Sciences, 37(23), 2685-2690. https://doi.org/10.1080/02640414.2019.1656703

The aim of this study was to assess the reliability and validity of the bar-mounted PUSH BandTM 2.0 to determine peak and mean velocity during the bench press exercise with a moderate (60% one repetition maximum [1RM]) and heavy (90% 1RM) load. We di... Read More about The reliability and validity of the bar-mounted PUSH BandTM 2.0 during bench press with moderate and heavy loads.

Effect of onset threshold on kinetic and kinematic variables of a weightlifting derivative containing a first and second pull (2019)
Journal Article
James, L., Suchomel, T., McMahon, J., Chavda, S., & Comfort, P. (2020). Effect of onset threshold on kinetic and kinematic variables of a weightlifting derivative containing a first and second pull. Journal of Strength and Conditioning Research, 34(2), 298-307. https://doi.org/10.1519/JSC.0000000000003316

James, LP, Suchomel, TJ, McMahon, JJ, Chavda, S, and Comfort, P. Effect of onset threshold on kinetic and kinematic variables of a weightlifting derivative containing a first and second pull. J Strength Cond Res XX(X): 000-000, 2019-This study sought... Read More about Effect of onset threshold on kinetic and kinematic variables of a weightlifting derivative containing a first and second pull.

A qualitative screening tool to identify athletes with ‘high-risk’ movement mechanics during cutting : the cutting movement assessment score (CMAS) (2019)
Journal Article
assessment score (CMAS). Physical Therapy in Sport, 38, 152-161. https://doi.org/10.1016/j.ptsp.2019.05.004

Objective

To assess the validity of the cutting movement assessment score (CMAS) to estimate the magnitude of peak knee abduction moments (KAM) against three-dimensional (3D) motion analysis, while comparing whole-body kinetics and kinematics betw... Read More about A qualitative screening tool to identify athletes with ‘high-risk’ movement mechanics during cutting : the cutting movement assessment score (CMAS).

Effects of an 8-week in-season upper limb elastic band training programme on the peak power, strength, and throwing velocity of junior handball players (2019)
Journal Article
Aloui, G., Hermassi, S., Hammami, M., Gaamouri, N., Bouhafs, E., Comfort, P., …Chelly, M. (2019). Effects of an 8-week in-season upper limb elastic band training programme on the peak power, strength, and throwing velocity of junior handball players. Sportverletzung, Sportschaden (Internet), 33(03), 133-141. https://doi.org/10.1055/a-0819-5185

Abstract Background Team handball is an intense sport with special requirements on technical and tactical skills as well as physical performance. The ability of handball players to make repeated powerful muscular contractions in pushing and throwing... Read More about Effects of an 8-week in-season upper limb elastic band training programme on the peak power, strength, and throwing velocity of junior handball players.

No effect of partial-body cryotherapy on restoration of countermovement-jump or well-being performance in elite rugby union players during the competitive phase of the season (2019)
Journal Article
Grainger, A., Comfort, P., & Heffernan, S. (2019). No effect of partial-body cryotherapy on restoration of countermovement-jump or well-being performance in elite rugby union players during the competitive phase of the season. International Journal of Sports Physiology and Performance, 15(1), 98-104. https://doi.org/10.1123/ijspp.2018-0911

Purpose:Partial body cryotherapy (PBC) has been shown to be beneficial for post-exercise recovery, however, no study has demonstrated the effectiveness of PBC as a recovery modality following elite rugby union (RU) training. RU is a unique sport that... Read More about No effect of partial-body cryotherapy on restoration of countermovement-jump or well-being performance in elite rugby union players during the competitive phase of the season.

Comparing biomechanical time series data during the hang-power clean and jump shrug (2019)
Journal Article
Kipp, K., Comfort, P., & Suchomel, T. (2021). Comparing biomechanical time series data during the hang-power clean and jump shrug. Journal of Strength and Conditioning Research, 35(9), 2389-2396. https://doi.org/10.1519/JSC.0000000000003154

The purpose of this study was to investigate differences in the force-, velocity-, displacement-, and power-time curves during the hang-power clean (HPC) and the jump shrug (JS). To this end, 15 male lacrosse players were recruited from a National Co... Read More about Comparing biomechanical time series data during the hang-power clean and jump shrug.

The effect of limb dominance on change of direction biomechanics : a systematic review of its importance for injury risk (2019)
Journal Article
Dos'Santos, T., Bishop, C., Thomas, C., Comfort, P., & Jones, P. (2019). The effect of limb dominance on change of direction biomechanics : a systematic review of its importance for injury risk. Physical Therapy in Sport, 37, 179-189. https://doi.org/10.1016/j.ptsp.2019.04.005

Objective:To critically evaluate the effect of limb dominance on change of direction (COD) biomechanicsassociated with increased ACL injury-risk.Methods:A systematic review of the literature was conducted using Medline and Sport DISCUS data-bases. St... Read More about The effect of limb dominance on change of direction biomechanics : a systematic review of its importance for injury risk.

Weightlifting overhead pressing derivatives : a review of the literature (2019)
Journal Article
Soriano, M., Suchomel, T., & Comfort, P. (2019). Weightlifting overhead pressing derivatives : a review of the literature. Sports Medicine, 49(6), 867-885. https://doi.org/10.1007/s40279-019-01096-8

This review examines the literature on weightlifting overhead pressing derivatives (WOPDs) and provides information regarding historical, technical, kinetic and kinematic mechanisms as well as potential benefits and guidelines to implement the use of... Read More about Weightlifting overhead pressing derivatives : a review of the literature.

Role of the penultimate foot contact during change of direction : implications on performance and risk of injury (2019)
Journal Article
Dos'Santos, A., Thomas, C., Comfort, P., & Jones, P. (2019). Role of the penultimate foot contact during change of direction : implications on performance and risk of injury. Strength and Conditioning Journal, 41(1), 87-104. https://doi.org/10.1519/SSC.0000000000000395

Most change of direction biomechanical investigations and current technique guidelines focus
on the role of the final foot contact (plant foot contact). However, it is evident that the
braking characteristics during the penultimate foot contact pla... Read More about Role of the penultimate foot contact during change of direction : implications on performance and risk of injury.