Results 41 to 50 of about 23,105 (226)

Leg stiffness and potential energy in the countermovement phase and the CMJ jump height

Biomedical Human Kinetics, 2016
Study aim: The elastic potential energy accumulated in the musculotendinous units during the countermovement phase of a jump adds up to the energy supplied by the contracting muscles used in the take-off phase.
Struzik Artur, Zawadzki Jerzy, Rokita Andrzej   +2 more
doaj   +1 more source

Positive Effects of Plyometric Training on Increasing Speed, Strength and Limb Muscles Power in Adolescent Males

Physical Education Theory and Methodology, 2023
The study purpose was to prove the effectiveness of a plyometric jumping jack, countermovement jump, and tuck jump training in increasing speed, strength, and limb muscle power in adolescent males. Materials and methods.
Shidqi Hamdi Pratama Putera, Hari Setijono, Oce Wiriawan, Nurhasan, Heryanto Nur Muhammad, Agus Hariyanto, Anindya Mar’atus Sholikhah, Adi Pranoto   +7 more
doaj   +1 more source

Asymmetrical lower extremity loading early after ACL reconstruction is a significant predictor of asymmetrical loading at the time of return to sport [PDF]

, 2016
OBJECTIVES: The aim of this study was to examine whether asymmetrical lower limb loading early after anterior cruciate ligament reconstruction (1 mo) can predict asymmetrical lower limb loading at the time of return to sport (6 mos) and whether other ...
Giombini, Arrigo, Labanca, Luciana, Laudani, Luca, Macaluso, Andrea, Mariani, Pier Paolo, Menotti, Federica, Pigozzi, Fabio, Rocchi, Jacopo   +7 more
core   +1 more source

The Impact of Collegiate Soccer Training on Gastrocnemius Activation [PDF]

, 2020
This study examined the impact of a collegiate soccer practice on freshman female’s gastrocnemius activation while performing a power jump, as measured by surface EMG.
Quillen, Ali
core   +1 more source

Analysis of standing vertical jumps using a force platform [PDF]

, 2001
A force platform analysis of vertical jumping provides an engaging demonstration of the kinematics and dynamics of one-dimensional motion. The height of the jump may be calculated (1) from the flight time of the jump, (2) by applying the impulse–momentum
Harman E. A., Major J. A., Nicholas P. Linthorne   +2 more
core   +1 more source

Countermovement Jump Standards in Rugby League: What is a “Good” Performance? [PDF]

Journal of Strength & Conditioning Research, 2020
Abstract McMahon, JJ, Lake, JP, Dos'Santos, T, Jones, PA, Thomasson, ML, and Comfort, P. Countermovement jump standards in rugby league: what is a “good” performance? J Strength Cond Res 36(6): 1691–1698, 2022—The countermovement jump (CMJ) is considered an important test in rugby league, and the force platform is the recommended tool for ...
McMahon, JJ, Lake, JP, Dos'Santos, TM, Jones, PA, Thomasson, ML, Comfort, P   +5 more
openaire   +3 more sources

Countermovement Jump Inter-Limb Asymmetries in Collegiate Basketball Players [PDF]

Sports, 2019
The purpose of the present study was to establish the intrasession and intersession reliability of variables obtained from a force plate that was used to quantitate lower extremity inter-limb asymmetry during the bilateral countermovement jump (CMJ).
Aaron Heishman, Bryce Daub, Ryan Miller, Brady Brown, Eduardo Freitas, Michael Bemben   +5 more
openaire   +4 more sources

The Acute and Longer-Term Effects of Cold Water Immersion in Highly-Trained Volleyball Athletes During an Intense Training Block

Frontiers in Sports and Active Living, 2020
Background: The use of cold water immersion (CWI) as a recovery strategy following exercise has drawn mixed findings over the last few decades. The purpose of the current study was two-fold; (1) to determine the acute effects of CWI within the training ...
Francisco Tavares, Mário Simões, Mário Simões, Bruno Matos, Tiaki Brett Smith, Matthew Driller   +5 more
doaj   +1 more source

A Comparison of Vertical Ground Reaction Forces in Single-leg Jump Take-offs and Double-leg Jump Take-offs in Indoor Collegiate Volleyball Players [PDF]

, 2020
The purpose of this study was to determine if differences in vertical ground reaction forces (vGRFs) exist between single-leg take-off approaches (SL) and double-leg take-off approaches (DL) and if sex or positional differences existed in vGRFs in SL- or
de Moors, Moroni, Deshner, Austin, Latchford, Margaret Elisabeth, McDermott, Maggie, Peveler, Will W   +4 more
core   +1 more source

Agro‐Industrial Enclosures: Food Security, Land Consolidation and Rural Displacement in China

Journal of Agrarian Change, EarlyView.
ABSTRACT This paper examines rural enclosures for industrialized agriculture as a window into the local political economy and territorial politics underlying projects of agricultural modernization. In recent years, agro‐industrial parks with ‘characteristic’ industries have proliferated in China as the government viewed it as a technical solution to ...
Karita Kan
wiley   +1 more source