Skip to main content

Research Repository

Advanced Search

All Outputs (233)

Effect of asymmetry on biomechanical characteristics during 180° change of direction (2020)
Journal Article
Thomas, C., DosʼSantos, T., Comfort, P., & Jones, P. (2020). Effect of asymmetry on biomechanical characteristics during 180° change of direction. Journal of Strength and Conditioning Research, 34(5), 1297-1306. https://doi.org/10.1519/JSC.0000000000003553

The aim of this study was to explore the effect of asymmetry on biomechanical characteristics during two 180° change of direction (CoD) tasks (505 and modified 505 [505mod]). Fifty-two male (n = 24; age = 22.1 ± 4.8 years; height = 1.78 ± 0.06 m; bod... Read More about Effect of asymmetry on biomechanical characteristics during 180° change of direction.

Validity and reliability of a standardized protocol for assessing the one repetition maximum performance during overhead pressing exercises (2020)
Journal Article
Soriano, M., García-Ramos, A., Torres-González, A., Castillo-Palencia, J., Ayuso, V., Marín, P., & Comfort, P. (2021). Validity and reliability of a standardized protocol for assessing the one repetition maximum performance during overhead pressing exercises. Journal of Strength and Conditioning Research, 35(11), 2988-2992. https://doi.org/10.1519/JSC.0000000000003284

The aim of this study was to determine the validity of performing 3 one repetition maximum (1RM) assessments for the push press (PP), push jerk (PJ), and split jerk (SJ) in sequence in one testing session vs. the criterion method (testing on separate... Read More about Validity and reliability of a standardized protocol for assessing the one repetition maximum performance during overhead pressing exercises.

Biomechanical determinants of injury risk and performance during change of direction : implications for screening and intervention (2020)
Thesis
Dos'Santos, T. Biomechanical determinants of injury risk and performance during change of direction : implications for screening and intervention. (Thesis). University of Salford

Changing direction is a key action linked to successful performance in multidirectional sports, but also an action associated with non-contact anterior cruciate ligament (ACL) injuries. Despite the importance of directional changes for sports per... Read More about Biomechanical determinants of injury risk and performance during change of direction : implications for screening and intervention.

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).