Results 11 to 20 of about 14,293 (220)

Phase specific changes in the countermovement jump occur without change in peak metrics following training [PDF]

open access: yes, 2021
The countermovement jump (CMJ) is routinely used to assess changes in strength-power qualities. Common measures derived from this test include jump height, peak power and peak velocity.
Lake, Jason P., James, Lachlan
core   +1 more source

Determining the optimal duration of plyometric training for enhancing vertical jump performance: a systematic review and meta-analysis

open access: yesЗдоров’я, спорт, реабілітація, 2023
Introduction. Plyometric training is done in many ways, but countermovement jumps and squat jumps are easy and safe methods involving minimal use of equipment to increase lower body muscular power.
Deepak Kumar   +3 more
doaj   +1 more source

A comprehensive assessment of caffeine’s effects on components of countermovement jump performance [PDF]

open access: yes, 2021
The aim of this study was to conduct a comprehensive examination of caffeine’s effects on countermovement jump (CMJ) performance. In this randomized, double-blind, crossover study, twenty-two resistance-trained men (age: 28 ± 5 years; height: 183 ± 5 cm;
Grgic, Jozo
core   +1 more source

Reliability of the Single-Leg, Medial Countermovement Jump in Youth Ice Hockey Players

open access: yesSports, 2021
Appropriate performance tests are critical for documenting training, fatigue and injury-related changes. Functional performance testing can provide quantitative information on specialized sport movements. The single-leg, medial countermovement jump is an
Anthony S. Donskov   +2 more
doaj   +1 more source

Are Torque-Driven Simulation Models of Human Movement Limited by an Assumption of Monoarticularity?

open access: yesApplied Sciences, 2021
Subject-specific torque-driven computer simulation models employing single-joint torque generators have successfully simulated various sports movements with a key assumption that the maximal torque exerted at a joint is a function of the kinematics of ...
Martin G. C. Lewis   +2 more
doaj   +1 more source

Sex Differences in Countermovement Jump Phase Characteristics [PDF]

open access: yesSports, 2017
The countermovement jump (CMJ) is commonly used to explore sex differences in neuromuscular function, but previous studies have only reported gross CMJ measures or have partly examined CMJ phase characteristics. The purpose of this study was to explore differences in CMJ phase characteristics between male and female athletes by comparing the force ...
McMahon, JJ, Rej, S, Comfort, P
openaire   +4 more sources

Altered countermovement jump force profile and muscle‐tendon unit kinematics following combined ballistic training [PDF]

open access: yes, 2022
Combined heavy‐ and light‐load ballistic training is often employed in high‐performance sport to improve athletic performance and is accompanied by adaptations in muscle architecture. However, little is known about how training affects muscle‐tendon unit
James, Lachlan P.   +13 more
core   +1 more source

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

open access: yes, 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   +3 more
core   +1 more source

Analyses of Countermovement Jump Performance in Time and Frequency Domains [PDF]

open access: yesJournal of Human Kinetics, 2021
This study aimed to analyze counter-movement jump (CMJ) performance in time and frequency domains. Fortyfour Division I American football players participated in the study. Kinetic variables were collected from both dominant and non-dominant legs using two force plates.
Sha, Zhanxin, Zhou, Zhaoxian, Dai, Boyi
openaire   +2 more sources

Optimum take-off angle in the standing long jump [PDF]

open access: yes, 2005
The aim of this study was to identify and explain the optimum projection angle that maximises the distance achieved in a standing long jump. Five physically active males performed maximum-effort jumps over a wide range of take-off angles, and the jumps ...
Wakai, M   +3 more
core   +1 more source

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