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All Outputs (260)

A comparison of three load-velocity based methods to estimate maximum overhead press performance in weightlifters (2022)
Journal Article
Soriano, M. A., Jiménez-Ormeño, E., Haff, G. G., Comfort, P., Giráldez-Costas, V., Ruiz-Moreno, C., & García-Ramos, A. (2022). A comparison of three load-velocity based methods to estimate maximum overhead press performance in weightlifters. International journal of Sports Science & Coaching, 18(5), 1585-1593. https://doi.org/10.1177/17479541221115854

This study aimed to evaluate whether lifting velocity can be used to estimate the overhead press one repetition maximum (1RM) and to explore the differences in the accuracy of the 1RM between three velocity-based methods. Twenty-seven weightlifters (... Read More about A comparison of three load-velocity based methods to estimate maximum overhead press performance in weightlifters.

A biomechanical analysis of weightlifting pulling derivatives and their application to performance programming (2022)
Thesis
Meechan, D. A biomechanical analysis of weightlifting pulling derivatives and their application to performance programming. (Thesis). University of Salford

The aims of the studies within this thesis were to determine if kinetics and kinematics differences occur between weightlifting pulling derivatives across loads, and to provide greater context regarding biomechanical time series data across loads. Ad... Read More about A biomechanical analysis of weightlifting pulling derivatives and their application to performance programming.

Rate of force development adaptations after weightlifting-style training: the influence of power clean ability. (2022)
Journal Article
James, L., Suchomel, T., Comfort, P., Haff, G., & Connick, M. (2022). Rate of force development adaptations after weightlifting-style training: the influence of power clean ability. Journal of Strength and Conditioning Research, 36(6), 1560-1567. https://doi.org/10.1519/JSC.0000000000003673

This experiment examined changes to the rate of force development (RFD) expressed under loaded jump conditions between individuals with a higher (stronger) and lower (weaker) weightlifting performance (as assessed by the 1 repetition maximum [RM] pow... Read More about Rate of force development adaptations after weightlifting-style training: the influence of power clean ability..

How Does Lower-Body and Upper-Body Strength Relate to Maximum Split Jerk Performance? (2022)
Journal Article
Soriano, M. A., Jiménez-Ormeño, E., Amaro-Gahete, F. J., Haff, G. G., & Comfort, P. (2022). How Does Lower-Body and Upper-Body Strength Relate to Maximum Split Jerk Performance?. Journal of Strength and Conditioning Research, 36(8), 2102-2107. https://doi.org/10.1519/jsc.0000000000004289

The aims of this study were to (I) determine the relationships between the maximum dynamic strength of the upper and lower body, measured by overhead press and back squat 1 repetition maximum (1RM) performances, and the split jerk (SJ) performance in... Read More about How Does Lower-Body and Upper-Body Strength Relate to Maximum Split Jerk Performance?.

Comparisons of countermovement jump and isokinetic performance in youth athletes: maturation and early sport specialization considerations (2022)
Thesis
Hofmann, C. Comparisons of countermovement jump and isokinetic performance in youth athletes: maturation and early sport specialization considerations. (Thesis). University of Salford

This thesis examines the impact of maturation status and single versus multiple sport participation on the physical performance of adolescent athletes across 6 studies. Study 1 investigated the test – retest reliability of isokinetic knee flexion and... Read More about Comparisons of countermovement jump and isokinetic performance in youth athletes: maturation and early sport specialization considerations.

Comparison between methods to estimate bicep femoris fascicle length from three estimation equations using a 10 cm ultrasound probe (2022)
Journal Article
Ripley, N., Comfort, P., & McMahon, J. (2022). Comparison between methods to estimate bicep femoris fascicle length from three estimation equations using a 10 cm ultrasound probe. Measurement in Physical Education and Exercise Science, 27(1), 43-50. https://doi.org/10.1080/1091367X.2022.2063689

The aim of the present study was to determine the reliability and differences between three fascicle length (FL) estimation methods when utilizing a 10-cm ultrasound (US) probe. Thirteen males (24.1 ± 3.8 years, 79.3 ± 14 kg, 179 ± 6.6 cm) participat... Read More about Comparison between methods to estimate bicep femoris fascicle length from three estimation equations using a 10 cm ultrasound probe.

Identifying and reporting position-specific countermovement jump outcome and phase characteristics within rugby league. (2022)
Journal Article
McMahon, J., Lake, J., & Comfort, P. (2022). Identifying and reporting position-specific countermovement jump outcome and phase characteristics within rugby league. PLoS ONE, 17(3), e0265999. https://doi.org/10.1371/journal.pone.0265999

The countermovement jump (CMJ) has been suggested to be an important test of neuromuscular performance for rugby league (RL) players. Identifying force platform-derived CMJ variables that may be more applicable to RL positions (e.g., forwards and bac... Read More about Identifying and reporting position-specific countermovement jump outcome and phase characteristics within rugby league..

Intra- and Interday Reliability of Weightlifting Variables and Correlation to Performance During Cleans (2022)
Journal Article
Sorensen, A. M., Chavda, S., Comfort, P., Lake, J., & Turner, A. N. (2022). Intra- and Interday Reliability of Weightlifting Variables and Correlation to Performance During Cleans. Journal of Strength and Conditioning Research, 36(11), 3008-3014. https://doi.org/10.1519/jsc.0000000000004241

Sorensen, AM, Chavda, S, Comfort, P, Lake, J, and Turner, AN. Intra- and interday reliability of weightlifting variables and correlation to performance during cleans. J Strength Cond Res 36(11): 3008–3014, 2022—The purpose of this investigation was t... Read More about Intra- and Interday Reliability of Weightlifting Variables and Correlation to Performance During Cleans.

The Reliability and Magnitude of Time-Dependent Force-Time Characteristics During the Isometric Midthigh Pull Are Affected by Both Testing Protocol and Analysis Choices (2022)
Journal Article
Guppy, S. N., Kotani, Y., Brady, C. J., Connolly, S., Comfort, P., & Haff, G. G. (2022). The Reliability and Magnitude of Time-Dependent Force-Time Characteristics During the Isometric Midthigh Pull Are Affected by Both Testing Protocol and Analysis Choices. Journal of Strength and Conditioning Research, 36(5), 1191-1199. https://doi.org/10.1519/jsc.0000000000004229

Guppy, SN, Kotani, Y, Brady, CJ, Connolly, S, Comfort, P, and Haff, GG. Title: The reliability and magnitude of time-dependent force-time characteristics during the isometric mid-thigh pull are impacted by both testing protocol and analysis choices.... Read More about The Reliability and Magnitude of Time-Dependent Force-Time Characteristics During the Isometric Midthigh Pull Are Affected by Both Testing Protocol and Analysis Choices.

The reliability of novel, temporal-based dynamic strength index metrics. (2022)
Journal Article
James, L., & Comfort, P. (2022). The reliability of novel, temporal-based dynamic strength index metrics. Sports Biomechanics, 1-12. https://doi.org/10.1080/14763141.2022.2032298

The purpose of this study was: i) to determine the reliability of alternate forms of the dynamic strength index (DSI) calculated over time-specific intervals that represent decisive actions in sport and ii) to assess the association between the origi... Read More about The reliability of novel, temporal-based dynamic strength index metrics..

The effect of exercise compliance on risk reduction for hamstring strain injury : a systematic review and meta-analyses (2021)
Journal Article
Ripley, N., Cuthbert, M., Ross, S., Comfort, P., & McMahon, J. (2021). The effect of exercise compliance on risk reduction for hamstring strain injury : a systematic review and meta-analyses. International Journal of Environmental Research and Public Health, 18(21), e11260. https://doi.org/10.3390/ijerph182111260

Eccentric strength training can reduce the risk of hamstring strain injury (HSI) occurrence; however, its implementation can be impacted by athlete compliance and prescription. The aim of this review was to investigate the effects of intervention com... Read More about The effect of exercise compliance on risk reduction for hamstring strain injury : a systematic review and meta-analyses.

A comparison of manual and automatic force-onset identification methodologies and their effect on force-time characteristics in the isometric midthigh pull (2021)
Journal Article
Guppy, S., Brady, C., Kotani, Y., Connolly, S., Comfort, P., Lake, J., & Haff, G. (2021). A comparison of manual and automatic force-onset identification methodologies and their effect on force-time characteristics in the isometric midthigh pull. Sports Biomechanics, 1-18. https://doi.org/10.1080/14763141.2021.1974532

The aim of this study was to assess the agreement of three different
automated methods of identifying force-onset (40 N, 5 SDs, and 3
SDs) with manual identification, during the isometric mid-thigh pull
(IMTP). Fourteen resistance-trained particip... Read More about A comparison of manual and automatic force-onset identification methodologies and their effect on force-time characteristics in the isometric midthigh pull.

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.

How effective is an evidence-based exercise intervention in individuals with patellofemoral pain? (2021)
Journal Article
Greaves, H., Comfort, P., Liu, A., Herrington, L., & Jones, R. (2021). How effective is an evidence-based exercise intervention in individuals with patellofemoral pain?. Physical Therapy in Sport, 51, 92-101. https://doi.org/10.1016/j.ptsp.2021.05.013

Objectives
Guidelines for a comprehensive rehabilitation programme for patellofemoral pain (PFP) have been developed by international experts. The aim of this study was to analyse the effect of such a rehabilitative exercise programme on pain, funct... Read More about How effective is an evidence-based exercise intervention in individuals with patellofemoral pain?.

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.

Biomechanical Effects of a 6-Week Change-of-Direction Technique Modification Intervention on Anterior Cruciate Ligament Injury Risk (2021)
Journal Article
Dos'Santos, T., Thomas, C., Comfort, P., & Jones, P. A. (2021). Biomechanical Effects of a 6-Week Change-of-Direction Technique Modification Intervention on Anterior Cruciate Ligament Injury Risk. Journal of Strength and Conditioning Research, 35(8), 2133-2144. https://doi.org/10.1519/jsc.0000000000004075

The aim of this study was to evaluate the biomechanical effects of a 6-week change-of-direction (COD) technique modification intervention on anterior cruciate ligament (ACL) injury risk (i.e., multiplanar knee joint loads) during 45° (CUT45) and 90°... Read More about Biomechanical Effects of a 6-Week Change-of-Direction Technique Modification Intervention on Anterior Cruciate Ligament Injury Risk.

Is there a relationship between the overhead press and split jerk maximum performance? Influence of sex (2021)
Journal Article

The aims of this study were to (I) determine the differences and relationship between the overhead press and split jerk performance in athletes involved in weightlifting training, and (II) explore the magnitude of these differences in one-repetition... Read More about Is there a relationship between the overhead press and split jerk maximum performance? Influence of sex.