Results 11 to 20 of about 1,062,117 (285)

Larger Countermovement Increases the Jump Height of Countermovement Jump [PDF]

Sports, 2018
Simulation studies show that jump performance can be improved by increasing the depth of countermovement. The purpose of this study was to determine how modifications to the depth of countermovement lead to changes in jump height and the biomechanical ...
Alberto Sánchez-Sixto, Andrew J. Harrison, Pablo Floría   +2 more
doaj   +6 more sources

The validity and reliability of the “My Jump App” for measuring jump height of the elderly [PDF]

PeerJ, 2018
Background The ability to jump has been related to muscle strength and power, speed and amplitude of the lower limbs movements, and specifically for the elderly, the vertical jump has been shown to be a good predictor of functional capacity and risk of ...
Rejane Maria Cruvinel-Cabral, Iransé Oliveira-Silva, André Ricarte Medeiros, João Gustavo Claudino, Pedro Jiménez-Reyes, Daniel A. Boullosa   +5 more
doaj   +7 more sources

Accuracy of Jump-Mat Systems for Measuring Jump Height [PDF]

International Journal of Sports Physiology and Performance, 2017
Vertical-jump tests are commonly used to evaluate lower-limb power of athletes and nonathletes. Several types of equipment are available for this purpose.Purpose:To compare the error of measurement of 2 jump-mat systems (Chronojump-Boscosystem and Globus Ergo Tester) with that of a motion-capture system as a criterion and to determine the modifying ...
Pueo, B, Lipinska, P, Jiménez-Olmedo, JM, Zmijewski, P, Hopkins, William   +4 more
openaire   +6 more sources

Acute effect of bounce drop jump and countermovement drop jump with and without additional load on jump performance parameters and reactive strength index on young gymnasts

Human Movement, 2023
Purpose Reactive strength index defines an athlete’s stretch-shortening cycle function and rebound capabilities. The purpose of the study was to examine the effect of two types of drop jumps (bounce drop jump: BDJ and countermovement drop jump: CDJ) on ...
George Dallas, Costas Dallas, Panagiotis Pappas, Giorgos Paradisis   +3 more
doaj   +2 more sources

A Correction Equation for Jump Height Measured Using the Just Jump System [PDF]

International Journal of Sports Physiology and Performance, 2016
Purpose:To determine the concurrent validity and reliability of the popular Just Jump system (JJS) for determining jump height and, if necessary, provide a correction equation for future reference.Methods:Eighteen male college athletes performed 3 bilateral countermovement jumps (CMJs) on 2 JJSs (alternative method) that were placed on top of a force ...
McMahon, JJ, Jones, P, Comfort, P
openaire   +4 more sources

Can IMU Provide an Accurate Vertical Jump Height Estimate?

Applied Sciences, 2021
The aim of the present study was to determine if an inertial measurement unit placed on the metatarsal part of the foot can provide valid and reliable data for an accurate estimate of vertical jump height.
Stefan Marković, Milivoj Dopsaj, Sašo Tomažič, Anton Kos, Aleksandar Nedeljković, Anton Umek   +5 more
doaj   +2 more sources

Torque pattern generation towards the maximum jump height [PDF]

Proceedings 2006 IEEE International Conference on Robotics and Automation, 2006. ICRA 2006., 2006
This paper discusses jumping pattern generation for a serial link robot in order to maximize its jump height under torque limitation. By applying a genetic algorithm (GA) for determining torque assignment, we obtain various jumping patterns with respect to the torque limitation for a fixed mass of the robot.
Mitsuru Higashimori, Manabu Harada, Idaku Ishii, Makoto Kaneko   +3 more
openaire   +5 more sources

Strength Determinants of Jump Height in the Jump Throw Movement in Women Handball Players [PDF]

Journal of Strength and Conditioning Research, 2020
Abstract McGhie, D, Østerås, S, Ettema, G, Paulsen, G, and Sandbakk, Ø. Strength determinants of jump height in the jump throw movement in women handball players. J Strength Cond Res 34(10): 2937–2946, 2020—The purpose of the study was to improve the understanding of the strength demands of a handball-specific jump through examining the ...
McGhie, David, Østerås, Sindre, Ettema, Gertjan, Paulsen, Gøran, Sandbakk, Øyvind   +4 more
openaire   +4 more sources

The correlation between jump height and mechanical power in a countermovement jump is artificially inflated [PDF]

Sports Biomechanics, 2020
The countermovement jump is commonly used to assess an athlete's neuromuscular capacity. The aim of this study was to identify the mechanism behind the strong correlation between jump height and mechanical power in a countermovement jump. Three athletes each performed between 47 and 60 maximal-effort countermovement jumps on a force platform.
Linthorne, NP
openaire   +5 more sources

Neuromechanical strategies employed to increase jump height during the initiation of the squat jump

Journal of Electromyography and Kinesiology, 2004
The maximal height attained in a vertical jump is heavily influenced by the execution of a large countermovement prior to the upward motion. When a jump must be executed without a countermovement, as in a squat jump, the maximal jump height is reduced. During such conditions, the human body may use other strategies in order to increase performance. The
Hasson, Christopher., Dugan, Eric L., Doyle, Tim L. A., Humphries, Brendan., Newton, Robert U.   +4 more
core   +5 more sources