نتایج جستجو برای: jump landing biomechanics

تعداد نتایج: 35821  

Journal: Physical Treatments 2019

Background: Studies on how the shoe insole hardness regulate joint stiffness and transfer energy in the lower extremity during jump landing are scarce. The current study aimed to determine the effectiveness of shoe insole changes in joint power and stiffness during landing from jumps. Methods: Fifteen healthy male athletes volunteered to perform jump-landing in various shoe insole conditions. ...

Objectives: The aim of this study was to assess the symmetry of ground reaction forces in patient with ACL rupture during vertical jump. Methods: Six men with ACLD (anterior cruciate ligament disease) participated in this study. Ground reaction forces components were assessed during Sargent jump by Kistler force plate. Data were analyzed running dependent Samples T-test and Repeated Measure in...

Gandomi, Farzaneh, Yalfani, Ali,

Chronic ankle instability has defined as recurrent ankle sprain, so that 40% of injured athletes after acute injury despite of receiving of adequate rehabilitation, suffering from this instability. The purpose of this study is investigate of postural sway’s risk factors proportion in jump-landing and lateral hopping tasks, in prediction of chronic ankle sprain occurrence. 25 ankle sprain injure...

2011
Xie Wu Songning Zhang Dongbin Zhang Chenbin Xie

Landing is a common movement task used in investigating impact attenuation and mechanisms of impact related lower extremities injury [1-5]. In the literature, there is limited biomechanical information regarding the relationship between eccentric strength of lower extremities and impact related biomechanics in landing. It is still unclear what roles of lower extremity eccentric strength plays i...

Journal: :Journal of applied biomechanics 2009
Niell Elvin Alex Elvin Cornie Scheffer Steven Arnoczky Edwin Dillon P J Erasmus

The etiology of patellar tendinopathy (jumper's knee) has been attributed to a significant increase in patellar tendon torques associated with jumping. While some investigators have suggested that patellar tendon torques are greater during takeoff, little is known about the relative magnitudes of patellar tendon torques during takeoff and landing. We hypothesized that peak patellar tendon torqu...

2017
Akihiro Tamura Kiyokazu Akasaka Takahiro Otsudo Jyunya Shiozawa Yuka Toda Kaori Yamada

Dynamic knee valgus during landings is associated with an increased risk of non-contact anterior cruciate ligament (ACL) injury. In addition, the impact on the body during landings must be attenuated in the lower extremity joints. The purpose of this study was to investigate landing biomechanics during landing with dynamic knee valgus by measuring the vertical ground reaction force (vGRF) and a...

2015
L Yin D Sun Q.C Mei Y.D Gu J.S Baker N Feng

Large number of studies showed that landing with great impact forces may be a risk factor for knee injuries. The purpose of this study was to illustrate the different landing loads to lower extremity of both genders and examine the relationships among selected lower extremity kinematics and kinetics during the landing of a stop-jump task. A total of 35 male and 35 female healthy subjects were r...

2016
Andrew A. Tran Corey Gatewood Alex H. S. Harris Julie A. Thompson Jason L. Dragoo

BACKGROUND Identification of biomechanical risk factors associated with anterior cruciate ligament (ACL) injury can facilitate injury prevention. The purpose of this study is to investigate the effects of three foot landing positions, "toe-in", "toe-out" and "neutral", on biomechanical risk factors for ACL injury in males and females. The authors hypothesize that 1) relative to neutral, the toe...

2011
Marc Fabian Norcross

Background: Greater sagittal plane energy absorption (EA) in the 100 ms immediatelyfollowing ground contact during landing likely results in greater anterior cruciate ligament(ACL) loading and is the result of the combined EA of the hip, knee, and ankle. Further,greater total EA has been associated with landing biomechanics that are purported toincrease ACL injury risk. Howe...

2016
J Yanci J Camara

The purposes of this study were to assess unilateral and bilateral vertical jump performance characteristics, and to compare the vertical ground reaction force characteristics of the impulse and landing phase of a vertical jump between the dominant and non-dominant leg in soccer players. The sample consisted of 20 male soccer players (22.80 ± 2.71 years, 1.88 ± 0.06 m, 76.47 ± 8.80 kg) who comp...

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