Estimation of Relative Load From Bar Velocity in the Full Back Squat Exercise

Luis Sánchez-Medina, Jesús G Pallarés, Carlos E Pérez, Ricardo Morán-Navarro, Juan José González-Badillo, Luis Sánchez-Medina, Jesús G Pallarés, Carlos E Pérez, Ricardo Morán-Navarro, Juan José González-Badillo

Abstract

Keywords: 1RM prediction; athletic performance; biomechanics; isoinertial assessment; muscle strength; resistance training.

Conflict of interest statement

Conflict of interest The authors have no conflicts of interest to declare.

Figures

Fig. 1
Fig. 1
Startingaand transition from eccentric to concentric phasebpositions of the full back squat performed in a Smith-type machine.
Fig. 2
Fig. 2
Relationships between relative load (%1RM) and bar velocity:amean velocity (MV);bmean propulsive velocity (MPV); andcpeak velocity (PV) for the full back squat exercise. Data obtained from raw load-velocity values derived from the progressive isoinertial squat loading tests performed on the sample of 80 athletes. Solid lines show the fitted curve to the data. Dotted lines indicate limits within which 95% of predictions will fall.
Fig. 3
Fig. 3
Relationships between relative load (%1RM) and mean propulsive velocity (MPV) in the squat exercise for the 3 subgroups of different relative strength ratio (RSR) that made up the sample: a G1 (n=24, RSR≤1.30); b G2 (n=29, 1.301.50). Dotted lines indicate limits within which 95% of predictions will fall.

References

    1. Bryanton M A, Kennedy M D, Carey J P, Chiu L Z. Effect of squat depth and barbell load on relative muscular effort in squatting. J Strength Cond Res. 2012;26:2820–2828.
    1. Caterisano A, Moss R F, Pellinger T K, Woodruff K, Lewis V C, Booth W, Khadra T. The effect of back squat depth on the EMG activity of 4 superficial hip and thigh muscles. J Strength Cond Res. 2002;16:428–432.
    1. Chandler T J, Wilson G D, Stone M H. The effect of the squat exercise on knee stability. Med Sci Sports Exerc. 1989;21:299–303.
    1. Conceição F, Fernandes J, Lewis M, Gonzaléz-Badillo J J, Jimenéz-Reyes P. Movement velocity as a measure of exercise intensity in three lower limb exercises. J Sports Sci. 2016;34:1099–1106.
    1. Crewther B, Cronin J, Keogh J. Possible stimuli for strength and power adaptation. Acute mechanical responses. Sports Med. 2005;35:967–989.
    1. Escamilla R F. Knee biomechanics of the dynamic squat exercise. Med Sci Sports Exerc. 2001;33:127–141.
    1. Escamilla R F, Fleisig G S, Zheng N, Barrentine S W, Wilk K E, Andrews J R. Biomechanics of the knee during closed kinetic chain and open kinetic chain exercises. Med Sci Sports Exerc. 1998;30:556–569.
    1. Escamilla R F, Fleisig G S, Zheng N, Lander J E, Barrentine S W, Andrews J R, Bergemann B W, Moorman C T. Effect of technique variations on knee biomechanics during the squat and leg press. Med Sci Sports Exerc. 2001;33:1552–1566.
    1. Franco-Márquez F, Rodríguez-Rosell D, González-Suárez J M, Pareja-Blanco F, Mora-Custodio R, Yañez-García J M, González-Badillo J J. Effects of combined resistance training and plyometrics on physical performance in young soccer players. Int J Sports Med. 2015;36:906–914.
    1. González-Badillo J J, Marques M C, Sánchez-Medina L. The importance of movement velocity as a measure to control resistance training intensity. J Hum Kinet. 2011;29A:15–19.
    1. González-Badillo J J, Pareja-Blanco F, Rodríguez-Rosell D, Abad-Herencia J L, del Ojo-López J J, Sánchez-Medina L. Effects of velocity-based resistance training on young soccer players of different ages. J Strength Cond Res. 2015;29:1329–1338.
    1. González-Badillo J J, Rodríguez-Rosell D, Sánchez-Medina L, Gorostiaga E M, Pareja-Blanco F. Maximal intended velocity training induces greater gains in bench press performance than deliberately slower half-velocity training. Eur J Sport Sci. 2014;14:772–781.
    1. González-Badillo J J, Rodríguez-Rosell D, Sánchez-Medina L, Ribas J, López-López C, Mora-Custodio R, Yañez-García J M, Pareja-Blanco F. Short-term recovery following resistance exercise leading or not to failure. Int J Sports Med. 2016;37:295–304.
    1. González-Badillo J J, Sánchez-Medina L. Movement velocity as a measure of loading intensity in resistance training. Int J Sports Med. 2010;31:347–352.
    1. Gullett J C, Tillman M D, Gutiérrez G M, Chow J W. A biomechanical comparison of back and front squats in healthy trained individuals. J Strength Cond Res. 2008;23:284–292.
    1. Harriss D J, Atkinson G. Ethical standards in sport and exercise science research: 2016 update. Int J Sports Med. 2015;36:1121–1124.
    1. Hartmann H, Wirth K, Klusemann M. Analysis of the load on the knee joint and vertebral column with changes in squatting depth and weight load. Sports Med. 2013;43:993–1008.
    1. Hartmann H, Wirth K, Klusemann M, Dalic J, Matuschek C, Schmidtbleicher D. Influence of squatting depth on jumping performance. J Strength Cond Res. 2012;26:3243–3261.
    1. Jidovtseff B, Harris N K, Crielaard J M, Cronin J B. Using the load-velocity relationship for 1RM prediction. J Strength Cond Res. 2011;25:267–270.
    1. Loturco I, Pereira L A, Cal Abad C C, Gil S, Kitamura K, Kobal R, Nakamura F Y. Using the bar-velocity to predict the maximum dynamic strength in the half-squat exercise. Int J Sports Physiol Perform. 2016;11:697–700.
    1. Loturco I, Tricoli V, Roschel H, Nakamura F Y, Cal Abad C C, Kobal R, Gil S, González-Badillo J J. Transference of traditional versus complex strength and power training to sprint performance. J Hum Kinet. 2014;41:265–273.
    1. Mora-Rodríguez R, Pallarés J G, López-Gullón J M, López-Samanes A, Fernández-Elías V E, Ortega J F. Improvements on neuromuscular performance with caffeine ingestion depend on the time-of-day. J Sci Med Sport. 2015;18:338–342.
    1. Murphy A J, Wilson G J. The ability of tests of muscular function to reflect training-induced changes in performance. J Sports Sci. 1997;15:191–200.
    1. Pallarés J G, Fernández-Elías V E, Ortega J F, Muñoz G, Muñoz-Guerra J, Mora-Rodríguez R. Neuromuscular responses to incremental caffeine doses: performance and side effects. Med Sci Sports Exerc. 2013;45:2184–2192.
    1. Pallarés J G, López-Samanes A, Fernández-Elías V E, Aguado-Jiménez R, Ortega J F, Gómez C, Ventura R, Segura J, Mora-Rodríguez R. Pseudoephedrine and circadian rhythm interaction on neuromuscular performance. Scand J Med Sci Sports. 2015;25:e603–e612.
    1. Pallarés J G, Sánchez-Medina L, Pérez C E, De La Cruz-Sánchez E, Mora-Rodríguez R. Imposing a pause between the eccentric and concentric phases increases the reliability of isoinertial strength assessments. J Sports Sci. 2014;32:1165–1175.
    1. Panariello R A, Backus S I, Parker J W. The effect of the squat exercise on anterior-posterior knee translation in professional football players. Am J Sports Med. 1994;22:768–773.
    1. Pareja-Blanco F, Rodríguez-Rosell D, Sánchez-Medina L, Gorostiaga E M, González-Badillo J J. Effect of movement velocity during resistance training on neuromuscular performance. Int J Sports Med. 2014;35:916–924.
    1. Pareja-Blanco F, Rodríguez-Rosell D, Sánchez-Medina L, Sanchís-Moysi J, Dorado C, Mora-Custodio R, Yáñez-García J M, Morales-Álamo D, Pérez-Suárez I, Calbet J A, González-Badillo J J. Effects of velocity loss during resistance training on athletic performance, strength gains and muscle adaptations. Scand J Med Sci Sports. 2016 doi: 10.1111/sms.12678.
    1. Pareja-Blanco F, Sánchez-Medina L, Suárez-Arrones L, González-Badillo J J. Effects of velocity loss during resistance training on performance in professional soccer players. Int J Sports Physiol Perform. 2016 doi: 10.1123/ijspp.2016-0170.
    1. Robertson GD E, Wilson J J, St Pierre T A. Lower extremity muscle functions during full squats. J App Biomech. 2008;24:333–339.
    1. Rodríguez-Rosell D, Franco-Márquez F, Pareja-Blanco F, Mora-Custodio R, Yáñez-García J M, González-Suárez J M, González-Badillo J J. Effects of 6-weeks resistance training combined with plyometric and speed exercises on physical performance of pre-peak height velocity soccer players. Int J Sports Physiol Perform. 2016;11:240–246.
    1. Ronnestad B R, Kojedal O, Losnegard T, Kvamme B, Raastad T. Effect of heavy strength training on muscle thickness, strength, jump performance, and endurance performance in well-trained nordic combined athletes. Eur J Appl Physiol. 2012;112:2341–2352.
    1. Sánchez-Medina L, González-Badillo J J. Velocity loss as an indicator of neuromuscular fatigue during resistance training. Med Sci Sports Exerc. 2011;43:1725–1734.
    1. Sánchez-Medina L, González-Badillo J J, Pérez C E, Pallarés J G. Velocity- and power-load relationships of the bench pull vs. bench press exercises. Int J Sports Med. 2014;35:209–216.
    1. Sánchez-Medina L, Pérez C E, González-Badillo J J. Importance of the propulsive phase in strength assessment. Int J Sports Med. 2010;31:123–129.
    1. Schoenfeld B J. Squatting kinematics and kinetics and their application to exercise performance. J Strength Cond Res. 2010;24:3497–3506.
    1. Wretenberg P, Feng Y, Arborelius U P. High- and low-bar squatting techniques during weight-training. Med Sci Sports Exerc. 1996;28:218–224.
    1. Wretenberg P, Feng Y, Lindberg F, Arborelius U P. Joint moments of force and quadriceps muscle activity during squatting exercise. Scand J Med Sci Sports. 1993;3:244–250.

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