Results 271 to 280 of about 13,292 (301)

How Fast Is a Horizontal Squat Jump?

International Journal of Sports Physiology and Performance, 2018
Velocity strength training requires exercise modalities that allow athletes to reach very high movement velocity, which is limited during vertical movements involving body weight. Purpose: To quantify the mechanical outputs developed during horizontal squat jumps (HSJs), notably the movement velocity, in comparison with vertical squat jumps (SJs) with ...
Samozino, Pierre, Riviere, Jean Romain, Rossi, Jeremy, Morin, Jean-Benoît, Jimenez-Reyes, Pedro   +4 more
openaire   +3 more sources

Two-Leg Squat Jumps in Water: An Effective Alternative to Dry Land Jumps

International Journal of Sports Medicine, 2009
The current study was designed to quantify and compare the kinetic parameters of two-leg squat jumps carried out on dry land, in water and in water using area devices that increase drag force. Twelve junior female handball players who had been competing at national level for the previous two years volunteered to participate in the study.
Colado Sánchez, Juan Carlos, García Massó, Xavier, González, Luis Millán, Triplett, N. Travis, Mayo Santamaría, Cristina, Mercé Cervera, Juan   +5 more
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Reliability of Squat Jump and Countermovement Jump Performance in Masters Athletes

La Prensa Medica, 2016
Reliability of Squat Jump and Countermovement Jump Performance in Masters Athletes Despite their widespread use in performance assessment in younger athletes, the reliability of squat jump (SJ) and countermovement jump (CMJ) assessments has not been reported in master’s athletes.
Delvecchio, L., Borges, N., Reaburn, P., Korhonen, Marko   +3 more
openaire   +2 more sources

Relationship Between Relative Net Vertical Impulse and Jump Height in Jump Squats Performed to Various Squat Depths and With Various Loads

International Journal of Sports Physiology and Performance, 2010
Purpose:The purpose of the current investigation was to determine the relationship between relative net vertical impulse (net vertical impulse (VI)) and jump height in the jump squat (JS) going to different squat depths and utilizing various loads.Methods:Ten males with two years of jumping experience participated in this investigation (Age: 21.8 ± 1.9
McBride, Jeffrey M, Kirby, Tyler J, Haines, Tracie L, Skinner, Jared   +3 more
openaire   +4 more sources

Biomechanical Analysis of Squat Jump and Countermovement Jump From Varying Starting Positions

Journal of Strength and Conditioning Research, 2013
The purpose of this study was to investigate the effect of 2 strategies, defined by foot placement during the initiation of the take-off on performance in vertical jumps. The additional area of interest in this experiment was whether technique of the take-off phase might be an exploratory factor that has different electromyogram (EMG) muscle activity ...
Krzysztof, Mackala, Jacek, Stodółka, Adam, Siemienski, Milan, Coh   +3 more
openaire   +2 more sources

Differences in the utilisation of active power in squat and countermovement jumps

European Journal of Sport Science, 2017
AbstractThe aim of this article was to understand how active power is used in squat and countermovement jumps. A simple empirical model comprising a mass, a spring, an active element and a damper, together with an optimisation principle, was used to identify the mechanical factors that maximise performance of jumps without countermovement (squat jumps,
Damián Ferraro, Gabriel Fábrica
openaire   +2 more sources

Reliability and Factorial Validity of Squat and Countermovement Jump Tests

The Journal of Strength and Conditioning Research, 2004
The primary aim of this study was to determine reliability and factorial validity of squat (SJ) and countermovement jump (CMJ) tests. The secondary aim was to compare 3 popular methods for the estimation of vertical jumping height. Physical education students (n = 93) performed 7 explosive power tests: 5 different vertical jumps (Sargent jump, Abalakow'
Marković, Goran, Dizdar, Dražan, Jukić, Igor, Cardinale, Marco   +3 more
openaire   +3 more sources

The influence of squat depth on maximal vertical jump performance

Journal of Sports Sciences, 2007
An increase in the period over which a muscle generates force can lead to the generation of greater force and, therefore, for example in jumping, to greater jump height. The aim of this study was to examine the effect of squat depth on maximum vertical jump performance.
Zachary J, Domire, John H, Challis
openaire   +2 more sources

Could the Deep Squat Jump Predict Weightlifting Performance?

Journal of Strength and Conditioning Research, 2009
This research was carried out with the aim of describing the deep squat jump (DSJ) and comparing it with the squat (SJ) and countermovement (CMJ) jumps, to introduce it as a strength testing tool in the monitoring and control of training in strength and power sports. Forty-eight male subjects (21 weightlifters, 12 triathletes, and 15 physical education
Francisco J, Vizcaya, Oscar, Viana, Miguel Fernandez, del Olmo, Rafael Martin, Acero   +3 more
openaire   +2 more sources

Determining the Threshold of Unweighting in Squat Jumps: A Study on Jump Height and Unweighting Amplitude

Journal of Strength & Conditioning Research
Abstract Agar-Newman, DJ, Funk, S, Cavin, E, Geneau, MC, Tsai, MC, and Klimstra, M. Determining the threshold of unweighting in squat jumps: a study on jump height and unweighting amplitude. J Strength Cond Res 39(3): 295–299, 2025—Squat jumps (SJs), involving only an upward propulsive phase, are commonly used in athletic assessment and ...
Dana J, Agar-Newman, Simon, Funk, Emily, Cavin, Mary Claire, Geneau, Ming-Chang, Tsai, Marc, Klimstra   +5 more
openaire   +2 more sources