How effective is an evidence-based exercise intervention in individuals with patellofemoral pain?

Greaves, H; Comfort, P; Liu, A; Herrington, LC; Jones, R

doi:10.1016/j.ptsp.2021.05.013

Selecting Metrics That Matter: Comparing the Use of the Countermovement Jump for Performance Profiling, Neuromuscular Fatigue Monitoring, and Injury Rehabilitation Testing (2023)
Journal Article
Bishop, C., Jordan, M., Torres-Ronda, L., Loturco, I., Harry, J., Virgile, A., …Comfort, P. (in press). Selecting Metrics That Matter: Comparing the Use of the Countermovement Jump for Performance Profiling, Neuromuscular Fatigue Monitoring, and Injury Rehabilitation Testing. Strength and Conditioning Journal, 45(5), 545-553. https://doi.org/10.1519/ssc.0000000000000772

The countermovement jump (CMJ) is one of the most used performance assessments in strength and conditioning. Although numerous studies discuss the usability of different metrics in this test, this is often performed within the context of a specific a... Read More about Selecting Metrics That Matter: Comparing the Use of the Countermovement Jump for Performance Profiling, Neuromuscular Fatigue Monitoring, and Injury Rehabilitation Testing.

Strength and Conditioning for Cricket Fielding: A Narrative Review (2022)
Journal Article
Lim, J., Wong, S., McErlain-Naylor, S. A., Scanlan, A., Goggins, L., Ahmun, R., …Weldon, A. (in press). Strength and Conditioning for Cricket Fielding: A Narrative Review. Strength and Conditioning Journal, 45(5), 509-524. https://doi.org/10.1519/ssc.0000000000000758

The main aim of cricket fielding is to minimize runs scored by the opposing batting team. This is achieved through (a) collecting a batted ball and returning it to the wicket-keeper to prevent runs from being scored, (b) dismissing a batter by catchi... Read More about Strength and Conditioning for Cricket Fielding: A Narrative Review.

Muscle architectural and force-velocity curve adaptations following 10 weeks of training with weightlifting catching and pulling derivatives (2022)
Journal Article
Suchomel, T., McKeever, S., Nolen, J., & Comfort, P. (2022). Muscle architectural and force-velocity curve adaptations following 10 weeks of training with weightlifting catching and pulling derivatives. Journal of Sports Science and Medicine, 21(4), 504-516. https://doi.org/10.52082/jssm.2022.504

The aims of this study were to examine the muscle architectural, rapid force production, and force-velocity curve adaptations following 10 weeks of resistance training with either submaximal weightlifting catching (CATCH) or pulling (PULL) derivative... Read More about Muscle architectural and force-velocity curve adaptations following 10 weeks of training with weightlifting catching and pulling derivatives.

The Effect of Rest Redistribution on Kinetic and Kinematic Variables During the Countermovement Shrug. (2022)
Journal Article
Meechan, D., McMahon, J. J., Suchomel, T. J., & Comfort, P. (in press). The Effect of Rest Redistribution on Kinetic and Kinematic Variables During the Countermovement Shrug. Journal of Strength and Conditioning Research, 37(7), 1358-1366. https://doi.org/10.1519/JSC.0000000000004238

This study compared the effects of rest redistribution (RR) on kinetic and kinematic variables during the countermovement shrug (CMS). Twenty-one male subjects (age 27.2 ± 3.3. years, height 1.78 ± 0.07 m, body mass 77.2 ±10.6 kg, relative one repeti... Read More about The Effect of Rest Redistribution on Kinetic and Kinematic Variables During the Countermovement Shrug..

Force plate-derived countermovement jump normative data and benchmarks for professional Rugby League players (2022)
Journal Article
McMahon, J., Ripley, N., & Comfort, P. (2022). Force plate-derived countermovement jump normative data and benchmarks for professional Rugby League players. Sensors, 22(22), 8669. https://doi.org/10.3390/s22228669

The countermovement jump (CMJ) is an important test in rugby league (RL), and the force plate is the recommended assessment device, as it permits the calculation of several variables that explain jump strategy, alongside jump height. The purpose of t... Read More about Force plate-derived countermovement jump normative data and benchmarks for professional Rugby League players.

Comparing biomechanical time series data across countermovement shrug load (2022)
Journal Article
Meechan, D., McErlain-Naylor, S., McMahon, J., Suchomel, T., & Comfort, P. (2022). Comparing biomechanical time series data across countermovement shrug load. Journal of Sports Sciences, 40(15), 1658-1667. https://doi.org/10.1080/02640414.2022.2091351

The effect of load on time series data has yet to be investigated during weightlifting derivatives. This study compared the effect of load on the force-time and velocity-time curves during the countermovement shrug (CMS). Twenty-nine males performed... Read More about Comparing biomechanical time series data across countermovement shrug load.

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.

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?.

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..

No differences in weightlifting overhead pressing exercises kinetics (2021)
Journal Article
Soriano, M., Lake, J., Comfort, P., Suchomel, T., McMahon, J., Jiménez-Ormeño, E., & Sainz de Baranda, P. (2021). No differences in weightlifting overhead pressing exercises kinetics. Sports Biomechanics, 1-13. https://doi.org/10.1080/14763141.2021.1993983

This study aimed to compare the kinetics between the push press (PP), push jerk (PJ), and split jerk (SJ). Sixteen resistance-trained participants (12 men and 4 women; age: 23.8 ± 4.4 years; height: 1.7 ± 0.1 m; body mass: 75.7 ± 13.0 kg; weightlifti... Read More about No differences in weightlifting overhead pressing exercises kinetics.

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?.

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