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Abstract

Biomechanical bilateral asymmetry can be significantly related to power production during the power clean. We investigated the relationship between bilateral asymmetry in ground reaction force (GRF) and lower extremity (hip, knee, and ankle) net joint torques (NJT) and whole-body power (WBP) during the power clean. Ten experienced weightlifters performed five trials of the power clean with 75% of one repetition maximum. Peak GRF and lower extremity NJT and WBP were extracted through a three-dimensional motion analysis. Differences in GRF and NJT asymmetries were extracted. Pearson correlation coefficients were obtained to observe the relationship between GRF and lower extremity NJT asymmetries and WBP during the power clean. A stepwise multiple regression analysis was conducted to identify the best predictor of WBP during the power clean with hip, knee, and ankle NJT asymmetries being the independent variables. Hip and ankle NJT asymmetries were characterized by significant negative correlations with WBP (r = −.38, p < .01). Hip and ankle NJT asymmetries also appeared to be significant predictors of WBP with up to 32% of the variance in WBP explained. In conclusion, it is suggested that power clean training programs needs to incorporate muscle balance training, particularly of the hip extensors and ankle plantarflexors, for performance and safety purposes.

Keywords

Ground reaction forces joint torques kinetics motion analysis resistance exercise weightlifting

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References

Mesquita Souza

Aidar

Villar

, et al. Assessment of asymmetry at different intensities between conventional and paralympic powerlifting athletes. Heliyon 2023; 9: e16211.

Gao

. The effect of application of asymmetry evaluation in competitive sports: a systematic review. Physical Activity and Health 2022; 6: 257–272.

Flanagan

Salem

. Bilateral differences in the net joint torques during the squat exercise. J Strength Cond Res 2007; 21: 1220–1226.

Hodges

Patrick

Reiser 2nd

. Effects of fatigue on bilateral ground reaction force asymmetries during the squat exercise. J Strength Cond Res 2011; 25: 3107–3117.

Kobayashi

Kubo

Matsuo

, et al. Bilateral asymmetry in joint torque during squat exercise performed by long jumpers. J Strength Cond Res 2010; 24: 2826–2830.

Webster

Austin

Feller

, et al. Symmetry of squatting and the effect of fatigue following anterior cruciate ligament reconstruction. Knee Surg Sports Traumatol Arthrosc 2015; 23: 3208–3213.

Whittal

Zwambag

Vanderheyden

, et al. High load with lower repetitions vs. Low load with higher repetitions: the impact on asymmetry in weight distribution during deadlifting. Front Sports Act Living 2020; 2: 560288.

Krzysztofik

Jarosz

Matykiewicz

, et al. A comparison of muscle activity of the dominant and non-dominant side of the body during low versus high loaded bench press exercise performed to muscular failure. J Electromyogr Kinesiol 2021; 56: 102513.

USA Weightlifting. Weightlifting and sport performance coaching course manual. Colorado Springs: USOC, 2015, pp.35–38.

10.

Comfort

Allen

Graham-Smith

. Comparisons of peak ground reaction force and rate of force development during variations of the power clean. J Strength Cond Res 2011; 25: 1235–1239.

11.

Lake

Lauder

Smith

. The effect that side dominance has on barbell power symmetry during the hang power clean. J Strength Cond Res 2010; 24: 3180–3185.

12.

Rider

Leonard

Kemble

, et al. Bilateral symmetry during a power clean in recreational vs. competitive weightlifters. In: 39th Annual Meeting of the American Society of Biomechanics, Columbus, United States, 2015.

13.

Kipp

Redden

Sabick

, et al. Weightlifting performance is related to kinematic and kinetic patterns of the hip and knee joints. J Strength Cond Res 2012; 26: 1838–1844.

14.

Lee

DeRosia

Lamie

, et al. Correlation profiles between lower extremity net joint torques and whole body power during the power clean. International Journal of Sports Science 2017; 7: 66–72.

15.

Coburn

Malek

. NSCA’s essentials of personal training. 2nd ed. Champaign: Human Kinetics, 2012, pp.226.

16.

de Leva

. Adjustments to Zatsiorsky-Seluyanov's segment inertia parameters. J Biomech 1996; 29: 1223–1230.

17.

Grood

Suntay

. A joint coordinate system for the clinical description of three-dimensional motions: application to the knee. J Biomech Eng 1983; 105: 136–144.

18.

Winter

. Biomechanics and motor control of human movement. 4th ed. New York: Wiley, 2009, pp.35.

19.

Lee

DeRosia

Lamie

. Evaluating the contribution of lower extremity kinetics to whole body power output during the power snatch. Sports Biomech 2018; 17: 554–556.

20.

Kipp

Harris

Sabick

. Lower extremity biomechanics during weightlifting exercise vary across joint and load. J Strength Cond Res 2011; 25: 1229–1234.

21.

Sato

Heise

. Influence of weight distribution asymmetry on the biomechanics of a barbell back squat. J Strength Cond Res 2012; 26: 342–349.

22.

Lee

Davis

Judge

, et al. Gender-based correlation profiles among the release factors and distance thrown in paralympic seated shot put. Adapt Phys Activ Q 2015; 32: 318–330.

23.

Mahalanobis

. On the generalized distance in statistics. In: Proceedings of the National Institute of Sciences of India, 1936, paper no. 21, pp. 49–55.

24.

Fry

Smith

Schilling

. Effect of knee position on hip and knee torques during the barbell squat. J Strength Cond Res 2003; 17: 629–633.

25.

Hwang

Kim

. Lower extremity joint kinetics and lumbar curvature during squat and stoop lifting. BMC Musculoskelet Disord 2009: 10: 15.

26.

Lee

DeRosia

Lamie

. Determining the best combination of ground reaction force parameters for maximising power during the power snatch. Int J Perf Anal Spor 2019; 19: 313–322.

27.

Schoenfeld

. Squatting kinematics and kinetics and their application to exercise performance. J Strength Cond Res 2010; 24: 3497–3506.

28.

Escamilla

. Knee biomechanics of the dynamic squat exercise. Med Sci Sports Exerc 2001; 33: 127–141.

29.

Almosnino

Kingston

Graham

. Three-dimensional knee joint moments during performance of the bodyweight squat: effects of stance width and foot rotation. J Appl Biomech 2013; 29: 33–43.

30.

Winchester

Erickson

Blaak

, et al. Changes in bar-path kinematics and kinetics after power-clean training. J Strength Cond Res 2005; 19: 177–183.

An exploratory study in relationship between biomechanical bilateral asymmetry and power output during the power clean

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