PMID: 9548115Apr 21, 1998Paper

Early phase differential effects of slow and fast barbell squat training

The American Journal of Sports Medicine
M C MorrisseyK H Han

Abstract

To examine the importance of resistance training movement speed, two groups of women (24 +/- 4 years, 162 +/- 5 cm, 59 +/- 7 kg) squatted repeatedly at 1) 2 seconds up, 2 seconds down (slow, N = 11); or 2) 1 second up, 1 second down (fast, N = 10), doing three warm-up sets and three eight-repetition maximum sets, three times per week for 7 weeks. Tests included force platform and video analysis of the vertical jump, long jump, and maximum squat, and isometric and isokinetic knee extensor testing at speeds from 25 to 125 deg/sec. The groups improved similarly in many variables with training but also showed some differences. In the long jump, the fast group was superior in numerous variables including knee peak velocity and total-body vertical and absolute power. In the vertical jump, fast training affected the ankle and hip more (e.g., average power), and slow training mostly affected the knee (average torque). In isokinetic testing, the fast group improved strength most at the faster velocities, while the slow group strength changes were consistent across the velocities tested. Although both slow and fast training improved performance, faster training showed some advantages in quantity and magnitude of training effects.

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Citations

Dec 28, 2018·International Journal of Rehabilitation Research. Internationale Zeitschrift Für Rehabilitationsforschung. Revue Internationale De Recherches De Réadaptation·Sarah ScarinPaolo Capodaglio
Jul 19, 2019·Medicine and Science in Sports and Exercise·David B Copithorne, Charles L Rice
Feb 6, 2002·Medicine and Science in Sports and Exercise·William J KraemerUNKNOWN American College of Sports Medicine
Jul 4, 2003·Medicine and Science in Sports and Exercise·David K Liow, William G Hopkins
Apr 6, 2004·Medicine and Science in Sports and Exercise·William J KraemerKeijo Häkkinen
Oct 14, 2011·Journal of Strength and Conditioning Research·Paul A SwintonRay Lloyd
Apr 14, 2010·Journal of Strength and Conditioning Research·Jason R BentleyR Donald Hagan
Oct 12, 2012·European Journal of Applied Physiology·J Fisher, D Smith
May 15, 2015·Current Sports Medicine Reports·Melinda S Loveless, Joseph M Ihm
Apr 17, 2014·European Journal of Sport Science·Juan José González-BadilloFernando Pareja-Blanco
Feb 4, 2016·Journal of Strength and Conditioning Research·Ramsey M NijemAnthony B Ciccone
Apr 9, 2019·International Journal of Sports Physiology and Performance·Michal WilkAdam Zajac
May 15, 2003·Sports Medicine·Marta I R Pereira, Paulo S C Gomes
Sep 2, 2011·Journal of Strength and Conditioning Research·Riana R PryorDeborah L King
Apr 24, 2009·Journal of Strength and Conditioning Research·Gerard MorasIñigo Mujika
Jan 1, 2014·Journal of Sports Medicine·James FisherStephen McKinnon
Feb 11, 2009·Medicine and Science in Sports and Exercise·UNKNOWN American College of Sports Medicine
Apr 6, 2004·Medicine and Science in Sports and Exercise·William J Kraemer, Nicholas A Ratamess
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Feb 14, 2012·European Journal of Applied Physiology·Mark D SchuenkeRobert S Staron
Sep 18, 2013·Journal of Applied Biomechanics·Chris RichterKieran Moran

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