keyword
MENU ▼
Read by QxMD icon Read
search

Vertical jump

keyword
https://www.readbyqxmd.com/read/29688136/predictors-of-attack-performance-in-high-level-male-volleyball-players
#1
Dimitrios Challoumas, Andreas Artemiou
PURPOSE: In volleyball, teams win the majority of points through attacks ('spikes') and therefore attack effectiveness (AE) is one of the most important predictors of victory. Traditionally, greater vertical jump heights (VJH) and higher spike speeds (SS) have been thought to increase AE, however relevant research is limited. Our aim was to assess the relationship of VJH and SS with AE as well as identify possible associations of demographic and anthropometric factors, including common volleyball injuries, with VJH, SS and AE...
April 24, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29687688/impact-kinetics-associated-with-four-common-bilateral-plyometric-exercises
#2
Ethan Stewart, Thomas Kernozek, Hsien-Te Peng, Brian Wallace
BACKGROUND: This study quantified the peak vertical ground reaction force (VGRF), impulse, and average and instantaneous loading rates developed during bilateral plyometric exercises. METHODS: Fourteen collegiate male athletes performed four different bilateral plyometric exercises within a single testing session. Depth jumps from thirty, sixty and ninety centimeter heights (DJ30, DJ60, and DJ90, respectively), and a two consecutive jump exercise (2CJ), were randomly performed...
April 20, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29687012/sex-based-differences-of-medial-collateral-ligament-and-anterior-cruciate-ligament-strains-with-cadaveric-impact-simulations
#3
Nathan D Schilaty, Nathaniel A Bates, Christopher V Nagelli, Aaron J Krych, Timothy E Hewett
Background: Female patients sustain noncontact knee ligament injuries at a greater rate compared with their male counterparts. The cause of these differences in the injury rate and the movements that load the ligaments until failure are still under dispute in the literature. Purpose/Hypotheses: This study was designed to determine differences in anterior cruciate ligament (ACL) and medial collateral ligament (MCL) strains between male and female cadaveric specimens during a simulated athletic task...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29677099/optimal-adherence-to-a-mediterranean-diet-and-high-muscular-fitness-are-associated-with-a-healthier-cardiometabolic-profile-in-collegiate-students
#4
Robinson Ramírez-Vélez, Jorge Enrique Correa-Bautista, Mónica Liliana Ojeda-Pardo, Carolina Sandoval-Cuellar, Antonio García-Hermoso, Hugo Alejandro Carrillo, Katherine González-Ruíz, Daniel Humberto Prieto-Benavides, Alejandra Tordecilla-Sanders, Arvydas Martinkėnas, César Agostinis-Sobrinho
The aim of the study was to investigate the combined association of adherence to a Mediterranean diet (MedDiet) and muscular fitness (MF) with cardiometabolic health in collegiate students. The present cross-sectional analysis consisted of 1248 (714 females) healthy collegiate students (20.1 ± 2.7 years old). Adherence to a MedDiet was assessed by a KIDMED (Mediterranean Diet Quality Index) questionnaire. Standing broad jump, standing vertical jump, and isometric handgrip dynamometry were used as indicators of MF...
April 20, 2018: Nutrients
https://www.readbyqxmd.com/read/29671383/sport-specific-biomechanical-responses-to-an-acl-injury-prevention-programme-a-randomised-controlled-trial
#5
Jeffrey B Taylor, Kevin R Ford, Randy J Schmitz, Scott E Ross, Terry A Ackerman, Sandra J Shultz
Anterior cruciate ligament (ACL) injury prevention programmes have not been as successful at reducing injury rates in women's basketball as in soccer. This randomised controlled trial (ClinicalTrials.gov #NCT02530333) compared biomechanical adaptations in basketball and soccer players during jump-landing activities after an ACL injury prevention programme. Eighty-seven athletes were cluster randomised into intervention (6-week programme) and control groups. Three-dimensional biomechanical analyses of drop vertical jump (DVJ), double- (SAG-DL) and single-leg (SAG-SL) sagittal, and double- (FRONT-DL) and single-leg (FRONT-SL) frontal plane jump landing tasks were tested before and after the intervention...
April 19, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29667844/lower-extremity-biomechanics-during-a-drop-vertical-jump-in-participants-with-or-without-chronic-ankle-instability
#6
C Collin Herb, Kaitlyn Grossman, Mark A Feger, Luke Donovan, Jay Hertel
CONTEXT:   Chronic ankle instability (CAI) is a condition characterized by range-of-motion, neuromuscular, and postural-control deficits and subjective disability, reinjury, and posttraumatic osteoarthritis. Differences have been reported in kinematics, kinetics, surface electromyography (EMG), and ground reaction forces during functional tasks performed by those with CAI. These measures are often collected independently, and the research on collecting measures simultaneously during a movement task is limited...
April 18, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29666769/joint-level-energetics-differentiate-isoinertial-from-speed-power-resistance-training-a-bayesian-analysis
#7
Bernard X W Liew, Christopher C Drovandi, Samuel Clifford, Justin W L Keogh, Susan Morris, Kevin Netto
Background: There is convincing evidence for the benefits of resistance training on vertical jump improvements, but little evidence to guide optimal training prescription. The inability to detect small between modality effects may partially reflect the use of ANOVA statistics. This study represents the results of a sub-study from a larger project investigating the effects of two resistance training methods on load carriage running energetics. Bayesian statistics were used to compare the effectiveness of isoinertial resistance against speed-power training to change countermovement jump (CMJ) and squat jump (SJ) height, and joint energetics...
2018: PeerJ
https://www.readbyqxmd.com/read/29658525/countermovement-depth-a-variable-which-clarifies-the-relationship-between-the-maximum-power-output-and-height-of-a-vertical-jump
#8
Jan Gajewski, Radosław Michalski, Krzysztof Buśko, Joanna Mazur-Różycka, Zbigniew Staniak
PURPOSE: The aim of this study was to identify the determinants of peak power achieved during vertical jumps in order to clarify relationship between the height of jump and the ability to exert maximum power. METHODS: One hundred young (16.8±1.8 years) sportsmen participated in the study (body height 1.861 ± 0.109 m, body weight 80.3 ± 9.2 kg). Each participant performed three jump tests: countermovement jump (CMJ), akimbo countermovement jump (ACMJ), and spike jump (SPJ)...
2018: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/29657827/vertical-exploration-and-dimensional-modularity-in-mice
#9
Yair Wexler, Yoav Benjamini, Ilan Golani
Exploration is a central component of animal behaviour studied extensively in rodents. Previous tests of free exploration limited vertical movement to rearing and jumping. Here, we attach a wire mesh to the arena wall, allowing vertical exploration. This provides an opportunity to study the morphogenesis of behaviour along the vertical dimension, and examine the context in which it is performed. In the current set-up, the mice first use the doorway as a point reference for establishing a borderline linear path along the circumference of the arena floor, and then use this path as a linear reference for performing horizontal forays towards the centre (incursions) and vertical forays on the wire mesh (ascents)...
March 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29657452/impact-of-various-foot-arches-on-dynamic-balance-and-speed-performance-in-collegiate-short-distance-runners-a-cross-sectional-comparative-study
#10
Selvaraj Sudhakar, S Veena Kirthika, K Padmanabhan, G Mohan Kumar, C V Senthil Nathan, R Gopika, Asir John Samuel
Objective: To compare the impact of foot arches on dynamic balance and speed performance. Materials and methods: 30 collegiate male short distance runners were divided into three groups based on foot arches, high, neutral and low. Balance and speed performance were estimated based on scores of star excursion balance test (SEBT), 40 yard dash test and vertical jump test (VJT). Results: Significant improved scores (p < 0.001) were noted in SEBT, 40 yard dash test and VJT...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29643592/does-trampoline-or-hard-surface-jumping-influence-lower-extremity-alignment
#11
Kiyokazu Akasaka, Akihiro Tamura, Aoi Katsuta, Ayako Sagawa, Takahiro Otsudo, Yu Okubo, Yutaka Sawada, Toby Hall
[Purpose] To determine whether repetitive trampoline or hard surface jumping affects lower extremity alignment on jump landing. [Subjects and Methods] Twenty healthy females participated in this study. All subjects performed a drop vertical jump before and after repeated maximum effort trampoline or hard surface jumping. A three-dimensional motion analysis system and two force plates were used to record lower extremity angles, moments, and vertical ground reaction force during drop vertical jumps. [Results] Knee extensor moment after trampoline jumping was greater than that after hard surface jumping...
December 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29628803/lower-body-strength-training-versus-proprioceptive-exercises-on-vertical-jump-capacity-a-feasibility-study
#12
Charles Son, Adam Stewart, John Ward, Kimary Farrar
Objective: The purpose of this study was to test the feasibility of completing a study comparing the impact of lower body strength training to proprioceptive exercises on vertical jump capacity. Methods: Thirty-nine college students (age 27.9 ± 6.4 y, height 1.69 ± 0.10 m, body mass 73.4 ± 15.9 kg: mean ± standard deviation) underwent baseline and post-testing of their vertical jump capacity using a Vertical Challenger and VICON motion analysis system. Participants were randomly assigned to 3 interventional groups between testing sessions: (1) lower body strength training, (2) lower body proprioceptive training, and (3) a no training control...
March 2018: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/29623049/specific-changes-in-young-soccer-player-s-fitness-after-traditional-bilateral-vs-unilateral-combined-strength-and-plyometric-training
#13
Rodrigo Ramirez-Campillo, Javier Sanchez-Sanchez, Oliver Gonzalo-Skok, Alejandro Rodríguez-Fernandez, Manuel Carretero, Fabio Y Nakamura
The aim of this study was to compare changes in young soccer player's fitness after traditional bilateral vs. unilateral combined plyometric and strength training. Male athletes were randomly divided in two groups; both received the same training, including strength training for knee extensors and flexors, in addition to horizontal plyometric training drills. The only difference between groups was the mode of drills technique: unilateral (UG; n = 9; age, 17.3 ± 1.1 years) vs. bilateral (TG; n = 9; age, 17...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29622683/peak-forelimb-ground-reaction-forces-experienced-by-dogs-jumping-from-a-simulated-car-boot
#14
David Pardey, Gillian Tabor, James Andrew Oxley, Alison P Wills
Many dog owners allow their pets to jump out of a car boot; however, to date, there has been no study that has investigated whether this places dogs at risk of injury. The aim of this study was to investigate the relationship between height and peak vertical ground reaction force (vGRF) in static start jumps. Fifteen healthy adult dogs performed three jumps from a platform that represented common vehicle boot sill heights (0.55, 0.65, 0.75 m), landing on a single force platform. Kinetic data (mediolateral (Fx), craniocaudal (Fy) and vertical (Fz)) were normalised for body weight and analysed via a one-way repeated analysis of variance (ANOVA) and pairwise post hoc tests with a Bonferroni correction applied...
April 5, 2018: Veterinary Record
https://www.readbyqxmd.com/read/29621115/acute-effect-of-foam-rolling-and-dynamic-stretching-on-flexibility-and-jump-height
#15
Jason C Smith, Brooke Pridgeon, MacGregor C Hall
Smith, JC, Pridgeon, B, and Hall, MC. Acute effect of foam rolling and dynamic stretching on flexibility and jump height. J Strength Cond Res XX(X): 000-000, 2017-Dynamic stretching (DS) can acutely improve vertical jump (VJ) performance but its effect lasts no more than 5 minutes. Foam rolling (FR), a form of self-myofascial release, can acutely increase range of motion (ROM) with this effect lasting less than 10 minutes. Therefore, the purpose of this study was to evaluate the time course of these effects, separately and combined, on VJ height and ROM...
April 4, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29620577/methods-of-identifying-limb-dominance-in-adolescent-female-basketball-players-implications-for-clinical-and-biomechanical-research
#16
Colleen R Mulrey, Sandra J Shultz, Kevin R Ford, Anh-Dung Nguyen, Jeffrey B Taylor
OBJECTIVE: To identify relationships between self-reported limb preferences and performance measures for determining limb dominance in adolescent female basketball players. DESIGN: Cross-sectional cohort study. PARTICIPANTS: Forty adolescent female basketball players. INDEPENDENT VARIABLES AND MAIN OUTCOME MEASURES: Participants provided self-reported preferred kicking and jumping limbs, then completed 3 trials of a single-limb countermovement hop (HOPVER) and unilateral triple hop for distance (HOPHOR) on each limb...
March 29, 2018: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29611771/the-effects-of-maturation-on-jumping-ability-and-sprint-adaptations-to-plyometric-training-in-youth-soccer-players
#17
Abbas Asadi, Rodrigo Ramirez-Campillo, Hamid Arazi, Eduardo Sáez de Villarreal
The aim of this study was to investigate the effects of maturation on power and sprint performance adaptations following 6 weeks of plyometric training in youth soccer players during pre-season. Sixty male soccer players were categorized into 3 maturity groups (Pre, Mid and Post peak height velocity [PHV]) and then randomly assigned to plyometric group and control group. Vertical jump, standing long jump, and 20-m sprint (with and without ball) tests were collected before- and after-intervention. After the intervention, the Pre, Mid and Post-PHV groups showed significant (P ≤ 0...
April 3, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29599873/physical-performance-comparison-between-under-15-elite-and-sub-elite-soccer-players
#18
Athos Trecroci, Zoran Milanović, Matteo Frontini, F Marcello Iaia, Giampietro Alberti
The aim of this study was to compare the physical performance profile among young soccer players of different competitive levels. Two teams of elite (n = 22) and sub-elite (n = 22) soccer players at national (highly skilled) and regional (moderately skilled) level were recruited in the study. All participants were tested using a modified Illinois change of direction speed test, a T-drill with and without a ball, a countermovement jump, and a 10-m sprint. The analysis revealed significant differences in favor of elite players in sprint (d = 1...
March 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29599866/impact-of-official-matches-on-soccer-referees-power-performance
#19
Daniel Castillo, Javier Yanci, Jesús Cámara
The evaluation of match officials' neuromuscular performance is now an important consideration and the vertical jump test is considered suitable for assessing lower limb power, partly because it is directly related to refereeing. The aim of this study, therefore, was to determine the effect of soccer matches on match officials' vertical jump performance by assessing various biomechanical variables. Eighteen field referees (FRs) and 36 assistant referees (ARs) who officiated in 18 official matches participated in this study...
March 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29589758/3d-localized-trions-in-monolayer-wse2-in-a-charge-tunable-van-der-waals-heterostructure
#20
Chitraleema Chakraborty, Liangyu Qiu, Kumarasiri Konthasinghe, Arunabh Mukherjee, Sajal Dhara, Nick Vamivakas
Monolayer transition metal dichalcogenides (TMDCs) have recently emerged as a host material for localized optically active quantum emitters that generate single photon. Here, we investigate fully localized excitons and trions from such TMDC quantum emitters embedded in a van der Waals heterostucture. We use direct electro- static doping through the vertical heterostructure device assembly to generate quantum confined trions. Distinct spectral jumps as a function of applied voltage bias, and ex- citation power dependent charging, demonstrate the observation of the two different excitonic complexes...
March 28, 2018: Nano Letters
keyword
keyword
26083
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"