Abstract

Findings from mechanical power data can make a significant difference in the performance of athletes in weightlifting if it is properly understood by coaches. The purpose of this study was to examine the power-load (P-L) curve in the snatch, clean, back jerk and jerk of an international-level Spanish weightlifter. Four testing sessions were conducted in the present work. Session 1: estimating snatch and clean 1RM (1 repetition maximum); Session 2: power assessment of the snatch and clean across a spectrum of loads (30% to 100%) of the predetermined 1RM; Session 3: estimating back jerk and jerk 1RM; Session 4: power assessment of the back jerk and jerk across a spectrum of loads (30% to 100%) of the predetermined 1RM. The highest peak power output (Pmax) was reached with loads of 90% of 1RM in each exercise tested, which demonstrated this percentage to be the optimal load (Pmax load) to train power development during weightlifting exercises.

Resumen

El entendimiento por parte de los entrenadores de los datos de potencia mecánica obtenidos en la halterofilia puede marcar notables diferencias en el rendimiento de los atletas. El propósito de este estudio fue examinar la curva de carga-potencia en los ejercicios de arrancada, cargada, envión por detrás y envión en un halterófilo español de nivel internacional. Cuatro sesiones de evaluación fueron llevadas a cabo en este estudio. En la sesión 1 se estimó el 1RM (1 repetición máxima) en la arrancada y la cargada. En la sesión 2 se realizó una evaluación de la potencia alcanzada en la arrancada y la cargada en un espectro de cargas desde el 30% al 100% del 1RM predeterminado anteriormente.  En la sesión 3 se estimó el 1RM en el envión por detrás y el envión. En la sesión 4 se realizó una evaluación de la potencia alcanzada en el envión por detrás y el envión en un espectro de cargas desde el 30% al 100% del 1RM predeterminado anteriormente. El pico de potencia mecánica fue alcanzado con el 90% del 1RM en cada uno de los ejercicios, mostrando dicho porcentaje como la carga óptima para el desarrollo de la potencia en ejercicios de halterofilia.

https://doi.org/10.55232/ricyde2017.05006

References/referencias

Baechle, T. R., & Earle, R. W. (2008). Essentials of strength training and conditioning Human Kinetics.

Baker, D. (2001). A series of studies on the training of high-intensity muscle power in rugby league football players. Journal of Strength and Conditioning Research, 15(2), 198-209.
https://doi.org/10.1519/00124278-200105000-00008

Baker, D.; Nance, S., & Moore, M. (2001a). The load that maximizes the average mechanical power output during explosive bench press throws in highly trained athletes. Journal of Strength and Conditioning Research, 15(1), 20-24.
https://doi.org/10.1519/00124278-200102000-00004

Baker, D.; Nance, S., & Moore, M. (2001b). The load that maximizes the average mechanical power output during jump squats in power-trained athletes. Journal of Strength and Conditioning Research, 15(1), 92-97.
https://doi.org/10.1519/00124278-200102000-00016

Campos, J.; Poletaev, P.; Cuesta, A.; Pablos, C., & Carratala, V. (2006). Kinematical analysis of the snatch in elite male junior weightlifters of different weight categories. Journal of Strength and Conditioning Research, 20(4), 843-850.

Castillo, F.; Valverde, T.; Morales, A.; Pérez-Guerra, A.; De León, F., & García-Manso, J. (2012). Maximum power, optimal load and optimal power spectrum for power training in upper-body (bench press): A review. Revista Andaluza de Medicina del Deporte, 5(1), 18-27.
https://doi.org/10.1016/S1888-7546(12)70005-9

Comfort, P.; Allen, M., & Graham-Smith, P. (2011). Comparisons of peak ground reaction force and rate of force development during variations of the power clean. Journal of Strength and Conditioning Research, 25(5), 1235-1239.
https://doi.org/10.1519/JSC.0b013e3181d6dc0d

Comfort, P.; Fletcher, C., & McMahon, J. J. (2012a). Determination of optimal loading during the power clean, in collegiate athletes. Journal of Strength and Conditioning Research, 26(11), 2970-2974.
https://doi.org/10.1519/JSC.0b013e318245bed4

Comfort, P.; McMahon, J. J., & Fletcher, C. (2013). No kinetic differences during variations of the power clean in inexperienced female collegiate athletes. Journal of Strength and Conditioning Research, 27(2), 363-368.
https://doi.org/10.1519/JSC.0b013e31825489c6

Comfort, P.; Udall, R., & Jones, P. A. (2012b). The effect of loading on kinematic and kinetic variables during the midthigh clean pull. Journal of Strength and Conditioning Research, 26(5), 1208-1214.
https://doi.org/10.1519/JSC.0b013e3182510827n

Cormie, P.; McGuigan, M. R., & Newton, R. U. (2011). Developing maximal neuromuscular power. Sports Medicine, 41(1), 17-38.
https://doi.org/10.2165/11537690-000000000-00000

Cormie, P.; McBride, J. M., & McCaulley, G. O. (2007). The influence of body mass on calculation of power during lower-body resistance exercises. Journal of Strength and Conditioning Research, 21(4), 1042-1049.
https://doi.org/10.1519/00124278-200711000-00011

Flores, F. J.; Sedano, S. & Redondo, J. C. (2017). Optimal load and power spectrum during jerk and back jerk in competitive weightlifters. Journal of Strength and Conditioning Research, 31(3), 809-816.
https://doi.org/10.1519/JSC.0000000000001544

Flores, F. J.; Sedano, S.; de Benito, A. M. & Redondo, J. C., (2016). Validity and reliability of a 3-axis accelerometer for measuring weightlifting movements. International Journal of Sports Science and Coaching, 11(6), 872-879.
https://doi.org/10.1177/1747954116676114

Garhammer, J. (1993). A review of power output studies of olympic and powerlifting: Methodology, performance prediction, and evaluation tests. Journal of Strength and Conditioning Research, 7(2), 76-89.
https://doi.org/10.1519/00124278-199305000-00002

González-Badillo, J.J. (1991). Halterofilia. Comité Olímpico Español.

Haines, T.; McBride, J. M.; Skinner, J.; Woodall, M.; Larkin, T. R.; Kirby, T. J., & Dayne, A. M. (2010). Effect of load on bar, body and system power output in the power clean. Journal of Strength and Conditioning Research, 24, 1. 

Hori, N.; Newton, R. U.; Nosaka, K., & McGuigan, M. R. (2006). Comparison of different methods of determining power output in weightlifting exercises. Strength and Conditioning Journal, 28(2), 34-40.
https://doi.org/10.1519/00126548-200604000-00006

Hori, N.; Newton, R. U.; Nosaka, K., & Stone, M. H. (2005). Weightlifting exercises enhance athletic performance that requires high-load speed strength. Strength and Conditioning Journal, 27(4), 50-55.
https://doi.org/10.1519/00126548-200508000-00008

Hori, N.; Newton, R. U.; Andrews, W. A.; Kawamori, N.; McGuigan, M. R., & Nosaka, K. (2007). Comparison of four different methods to measure power output during the hang power clean and the weighted jump squat. Journal of Strength and Conditioning Research, 21(2), 314-320.
https://doi.org/10.1519/00124278-200705000-00005

Izquierdo, M.; Häkkinen, J.; González-Badillo, J. J.; Ibañez, J., & Gorostiaga, E. M. (2002). Effects of long-term training specificity on maximal strength and power of the upper and lower extremities in athletes from different sports. European Journal of Applied Physiology, 87, 264-271.
https://doi.org/10.1007/s00421-002-0628-y

Janz, J., & Malone, M. (2008). Training explosiveness: Weightlifting and beyond. Strength and Conditioning Journal, 30(6), 14-22.
https://doi.org/10.1519/SSC.0b013e31818e2f13

Kawamori, N.; Crum, A. J.; Blumert, P. A.; Kulik, J. R.; Childers, J. T.; Wood, J. A., & Haff, G. G. (2005). Influence of different relative intensities on power output during the hang power clean: Identification of the optimal load. Journal of Strength and Conditioning Research, 19(3), 698-708.
https://doi.org/10.1519/00124278-200508000-00035

Kawamori, N., & Haff, G. G. (2004). The optimal training load for the development of muscular power. Journal of Strength and Conditioning Research, 18(3), 675-684.
https://doi.org/10.1519/00124278-200408000-00051

Kilduff, L. P.; Bevan, H.; Owen, N.; Kingsley, M. I.; Bunce, P.; Bennett, M., & Cunningham, D. (2007). Optimal loading for peak power output during the hang power clean in professional rugby players.
International Journal of Sports Physiology and Performance, 2(3), 260-269.
https://doi.org/10.1123/ijspp.2.3.260

Lake, J. P.; Mundy, P. D., & Comfort, P. (2014). Power and impulse applied during push press exercise. Journal of Strength and Conditioning Research, 28(9), 2552-2559.
https://doi.org/10.1519/JSC.0000000000000438

McBride, J. M.; Haines, T. L., & Kirby, T. J. (2011). Effect of loading on peak power of the bar, body, and system during power cleans, squats, and jump squats. Journal of Sports Sciences, 29(11), 1215-1221.
https://doi.org/10.1080/02640414.2011.587444

Nacleiro, F. (2006). Análisis de la fuerza y la potencia mecánica producida en los ejercicios con resistencias en diferentes poblaciones de deportistas a lo largo de una temporada. (Doctoral dissertation).

Pennington, J.; Laubach, L.; De Marco, G., & Linderman, J. (2010). Determining the optimal load for maximal power output for the power clean and snatch in collegiate male football players.
Journal of Exercise Physiology, 13(2), 10-20.

Romero, S.; Vila, H.; Ferragut, C., & Alcaraz, P. E. (2009). Power-strength curve in basketball players. Revista de Psicología del Deporte, 18(3), 425-428. 

Sato, K.; Smith, S. L., & Sands, W. A. (2009). Validation of an accelerometer for measuring sport performance. Journal of Strength and Conditioning Research, 23(1), 341-347.
https://doi.org/10.1519/JSC.0b013e3181876a01

Sinclair, R. (1985). Normalizing the performance of athletes in Olympic weightlifting. Canadian Journal of Applied Sport Sciences, 10(2), 94-98.

Soriano, M. A.; Jiménez-Reyes, P.; Rhea, M. R., & Marín, P. J. (2015). The optimal load for maximal power production during lower-body resistance exercises: A meta-analysis. Sports Medicine, 45(8), 1191-1205.
https://doi.org/10.1007/s40279-015-0341-8

Stone, M. H.; O’Bryant, H. S.; Mccoy, L.; Coglianese, R.; Lehmkuhl, M., & Schilling, B. (2003). Power and maximum strength relationships during performance of dynamic and static weighted jumps. Journal of Strength and Conditioning Research, 17(1), 140–147.
https://doi.org/10.1519/00124278-200302000-00022

Stone, M. H. (1993). Position statement: Explosive exercise and training. Strength and Conditioning Journal, 15(3), 7-15.
https://doi.org/10.1519/0744-0049(1993)015<0007:EEAT>2.3.CO;2

Stone, M. H.; Pierce, K. C.; Sands, W. A., & Stone, M. E. (2006). Weightlifting: A brief overview. Strength and Conditioning Journal, 28(1), 50-66.
https://doi.org/10.1519/00126548-200602000-00010

Suchomel, T. J.; Comfort, P., & Stone, M. H. (2015). Weightlifting pulling derivatives: Rationale for implementation and application. Sports Medicine, 45(6), 823-839.
https://doi.org/10.1007/s40279-015-0314-y

Suchomel, T. J.; Wright, G. A.; Kernozek, T. W., & Kline, D. E. (2014). Kinetic comparison of the power development between power clean variations. Journal of Strength and Conditioning Research, 28(2), 350-360.
https://doi.org/10.1519/JSC.0b013e31829a36a3

Thomas, G. A.; Kraemer, W. J.; Spiering, B. A.; Volek, J. S.; Anderson, J. M., & Maresh, C. M. (2007). Maximal power at different percentages of one repetition maximum: Influence of resistance and gender. Journal of Strength and Conditioning Research, 21(2), 336-342.
https://doi.org/10.1519/00124278-200705000-00008

Thompson, C. J., & Bemben, M. G. (1999). Reliability and comparability of the accelerometer as a measure of muscular power. Medicine and Science in Sports Exercise, 31(6), 897-902.
https://doi.org/10.1519/00124278-200705000-00008

snatch; clean; jerk; back jerk; power; optimal load. Arrancada; cargada; envión; envión por detrás; potencia; carga óptima.