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"Hurdle jump"

Mark Tyler Cavanaugh, Saied Jalal Aboodarda, Daniel Hodgson, David George Behm
Foam rolling has been shown to increase range of motion without subsequent performance impairments of the rolled muscle, however, there are no studies examining rolling effects on antagonist muscles. The objective of this study was to determine whether foam rolling the hamstrings and/or quadriceps would affect hamstrings and quadriceps activation in men and women. Recreationally active men (n=10, 25 ± 4.6 years, 180.1 ± 4.4 cm, 86.5 ± 15.7 kg) and women (n=8, 21.75 ± 3.2 years, 166.4 ± 8.8 cm, 58.9 ± 7...
September 6, 2016: Journal of Strength and Conditioning Research
Mark Tyler Cavanaugh, Saied Jalal Aboodarda, David George Behm
The objective of this study was to develop a standardized test to determine quadriceps and hamstrings muscle activation in a position emulating a non-contact anterior cruciate ligament injury. We assessed the intra- and inter-session reliability of surface electromyography (EMG) of the dominant leg following single-leg landing from a standardized hurdle jump. Eighteen subjects (10 males, 8 females) participated in four repeated sessions. During each session, individuals performed three successful jumps over a hurdle set to 75% of their maximal countermovement jump height and landed on their dominant leg...
September 6, 2016: Journal of Strength and Conditioning Research
N Crevier-Denoix, F Munoz-Nates, A Van Hamme, M Camus, A-L Emond, H Jerbi, B Ravary-Plumioen, H Chateau, P Pourcelot
No abstract text is available yet for this article.
2015: Computer Methods in Biomechanics and Biomedical Engineering
A Criscione, V Moltisanti, L Chies, D Marletta, S Bordonaro
Salernitano (SAL) is an ancient Italian horse breed developed over the course of the ages together with Napoletano and, during the 20th century, by crossing with Thoroughbred horse lines. Excellent in hurdle jumping, this breed is currently facing a concrete risk of extinction due to the lack of appropriate management strategies. This research is the first SAL genetic characterization that aims to set up the basic knowledge for a conservation plan. A representative sample of 61 SALs was analyzed by means of a set of 16 microsatellites markers (short tandem repeats (STRs))...
October 2015: Animal: An International Journal of Animal Bioscience
Armin Kibele, Claudia Classen, Thomas Muehlbauer, Urs Granacher, David G Behm
BACKGROUND: In the past, plyometric training (PT) has been predominantly performed on stable surfaces. The purpose of this pilot study was to examine effects of a 7-week lower body PT on stable vs. unstable surfaces. This type of exercise condition may be denoted as metastable equilibrium. METHODS: Thirty-three physically active male sport science students (age: 24.1 ± 3.8 years) were randomly assigned to a PT group (n = 13) exercising on stable (STAB) and a PT group (n = 20) on unstable surfaces (INST)...
2014: BMC Sports Science, Medicine and Rehabilitation
Eduardo L Cadore, Eraldo Pinheiro, Mikel Izquierdo, Cleiton S Correa, Régis Radaelli, Jocelito B Martins, Francisco L R Lhullier, Orlando Laitano, Marcelo Cardoso, Ronei S Pinto
The purpose of this study was to investigate the effect of different volumes of plyometric exercise (i.e., 100, 200, or 300 hurdle jumps) on acute strength and jump performance and on the acute hormonal and lactate responses in rugby players. Eleven young male elite rugby players (age, 23.5 ± 0.9 years; height, 173 ± 4.8 cm) volunteered for the study. Maximal isometric peak torque (PT), maximal rate of force development (RFD), squat jump (SJ), and drop jump (DJ) performance were assessed before and 5 minutes, 8 hours, and 24 hours after 100, 200, or 300 jumps...
November 2013: Journal of Strength and Conditioning Research
Dario F Cappa, David G Behm
The objective of this study was to compare drop (DJ) and hurdle jumps using a preferred, flat foot (FLAT) and forefoot (FORE) landing technique. Countermovement jump height was used to establish the hurdle and the DJ heights. The subjects performed forward hurdles and vertical DJs on a force plate. Measures included vertical ground reaction force (VGRF), contact time, leg stiffness, and rate of force development (RFD). Electromyographic (EMG) activity was measured in the rectus femoris, biceps femoris, tibialis anterior, and gastrocnemius during 3 phases: preactivity, eccentric phase, and concentric phase...
November 2013: Journal of Strength and Conditioning Research
Dario F Cappa, David G Behm
The objective of this study was to compare bilateral and unilateral hurdle jumps with traditional countermovement jumps (CMJs). Thirteen athletes were tested during continuous forward bilateral and unilateral hurdle jumps and single CMJ. Countermovement jump height was used to establish the hurdle height. Subjects jumped forward over 4 hurdles with the force plate positioned after the second hurdle to measure vertical ground reaction force (VGRF), contact time (CT), and rate of force development (RFD). For bilateral jumps, hurdle height was established at maximal (100%) CMJ height and at 120, 140, and 160% of the CMJ height...
October 2011: Journal of Strength and Conditioning Research
Luis Beltran, Varand Ghazikhanian, Mario Padron, Javier Beltran
Proximal hamstring injuries occur during eccentric contraction with the hip and the knee on extension; hence they are relatively frequent lesions in specific sports such as water skiing and hurdle jumping. Additionally, the trend toward increasing activity and fitness training in the general population has resulted in similar injuries. Myotendinous strains are more frequent than avulsion injuries. Discrimination between the two types of lesions is relevant for patient management, since the former is treated conservatively and the latter surgically...
December 2012: European Journal of Radiology
S Sedano, A Matheu, J C Redondo, G Cuadrado
AIM: The main aim of this study was to determine the effects of a 10-week plyometric training program on explosive strength, acceleration capacity and kicking speed in young elite soccer players. METHODS: Twenty-two players participated in the study: control group (CG), (N.=11; 18.2 ± 0.9 years) and treatment group (TG) (N.=11; 18.4 ± 1.1 years). Both groups performed technical and tactical training exercises and matches together. However, the CG players followed the regular physical conditioning program, which was replaced by a plyometric program for TG...
March 2011: Journal of Sports Medicine and Physical Fitness
Thilo Pfau, Alison Garland de Rivaz, Stephanie Brighton, Renate Weller
A recent survey reported an increased risk of injury in dogs participating in agility, a competitive canine sport involving different jumping activities. The aim of this study was to quantify the kinetic parameters during jump landing for commonly used obstacle types. It was hypothesised that with increasing obstacle height, the vertical force and vertical and accelerative horizontal impulse will increase as a result of a lengthened aerial phase, a more acute landing angle and the need to convert potential into forwards kinetic energy...
November 2011: Veterinary Journal
Joel P Smith, Thomas W Kernozek, Dennis E Kline, Glenn A Wright
Our purpose was to provide an in-depth investigation of 2 commonly used depth jump variants: depth jumping over a hurdle and depth jumping while touching as high as possible using an overhead goal. Fourteen male athletes performed a series of depth jumps from a 45-cm box. Three types of jumping conditions were used. One type of depth jump was a control jump (DJ45-C), performed for maximal height with no external apparatus used to influence the jump. Another type of depth jump was performed over a hurdle (DJ45-H), which was set at an individualized height for each athlete based on their leaping ability...
January 2011: Journal of Strength and Conditioning Research
Goran Markovic, Igor Jukic, Dragan Milanovic, Dusan Metikos
The purpose of this study was to evaluate the effects of sprint training on muscle function and dynamic athletic performance and to compare them with the training effects induced by standard plyometric training. Male physical education students were assigned randomly to 1 of 3 groups: sprint group (SG; n = 30), plyometric group (PG; n = 30), or control group (CG; n = 33). Maximal isometric squat strength, squat- and countermovement jump (SJ and CMJ) height and power, drop jump performance from 30-cm height, and 3 athletic performance tests (standing long jump, 20-m sprint, and 20-yard shuttle run) were measured prior to and after 10 weeks of training...
May 2007: Journal of Strength and Conditioning Research
H Kyröläinen, J Avela, J M McBride, S Koskinen, J L Andersen, S Sipilä, T E S Takala, P V Komi
The present study investigates the effects of power training on mechanical efficiency (ME) in jumping. Twenty-three subjects, including ten controls, volunteered for the study. The experimental group trained twice a week for 15 weeks performing various jumping exercises such as drop jumps, hurdle jumps, hopping and bouncing. In the maximal jumping test, the take-off velocity increased from 2.56 (0.24) m.s(-1) to 2.77 (0.18) m.s(-1) ( P<0.05). In the submaximal jumping of 50% of the maximum, energy expenditure decreased from 660 (110) to 502 (68) J...
March 2004: European Journal of Applied Physiology
J T Viitasalo, K Hämäläinen, H V Mononen, A Salo, J Lahtinen
Jumping drills that include several successive take-offs are popular in many sports events. An understanding of the effects of fatigue on biomechanical parameters during continuous jumping drills is important when selecting drills and their durations for sports training. In the present study, effects of continuous hurdle jumping on myoelectrical (EMG) activity, ground reaction forces, vertical movements of the body's centre of mass and knee joint angle kinematics were studied among eight male volleyball players (age 20-26 years)...
December 1993: Journal of Sports Sciences
H B Daly
No abstract text is available yet for this article.
January 1969: Journal of Experimental Psychology
E R John, P Chesler, F Bartlett, I Victor
In two experiments cats acquired a stimulus-controlled approach or avoidance response by observational or conventional shaping procedures. Observer cats acquired the avoidance response (hurdle jumping in response to a buzzer stimulus) significantly faster and made fewer errors than cats that were conventionally trained. Observer cats acquired the approach response (lever pressing for food in response to a light stimulus) with significantly fewer errors than cats that were conventionally trained. In some cases, observer cats committed one or no errors while reaching criterion...
March 29, 1968: Science
H B Daly
No abstract text is available yet for this article.
January 1970: Journal of Experimental Psychology
H B Daly
No abstract text is available yet for this article.
March 1972: Journal of Experimental Psychology
A Jucker
There is rather little literature about hip disease in later life of former elite athletes. This running prospective study is concerned about precisely this question. Conclusive results are not yet available. But there are signs for a tendency towards increased formation of degenerative hip disease (or even premature arthrosis) in hurdling, jumping, decathlon, and probably in long distance running. Possible causes are mentioned (epiphysiolysis in hurdling?). Short outline about biomechanics and relationship of involved forces...
October 1990: Der Radiologe
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