Epidemiological studies of injuries at ski resorts have found that jumping generally poses a significantly greater risk of spine and head injuries to patrons. Jumping activities in resorts are now focused in terrain parks over man-made features which provides an opportunity to mitigate injury rates through better engineering design. However, the use of engineering design has been questioned by ...

INTRODUCTION The mechanism of non-contact anterior cruciate ligament (ACL) injury is not well understood. It is partly because previous studies have been unable to relate dynamic knee muscle forces during sports activities such as landing from a jump to the strain in the ACL. The objective of this research was to develop and validate a unique combined in-vivo/invitro method to relate the muscle...

UNLABELLED The repeal of the Direct Ground Combat Assignment Rule has renewed focus on examining performance capabilities of female military personnel and their ability to occupy previously restricted military occupational specialties. Previous research has revealed female Soldiers suffer a greater proportion of musculoskeletal injuries compared to males, including a significantly higher propor...

Technical evaluation in the sport of figure skating is characterized by a subjective marking system. Figure skating judges are responsible for quickly and accurately discerning the quality of technical elements as well as assigning a score to the overall aesthetic appearance of a performance. Traditionally, overall placement marks are assigned for the entire performance; however, the landing of...

Introduction Ankle joint taping is a common prophylactic measure used by individuals involved in sports. Little information is available on the effects of ankle joint taping on biomechanical parameters in subjects with FI during functional activities such as jump landing. [1] Thus the aim of this study was to examine the effects of ankle joint taping and exercise on ankle joint frontal and sagi...

Landing from a jump implies proper positioning of the lower limb segments and the generation of an adequate muscular force to cope with the imminent collision with the ground. This study assesses how a hypogravitational environment affects the control of landing after a countermovement jump (CMJ). Eight participants performed submaximal CMJs on Earth (1-g condition) and in a weightlessness envi...

BACKGROUND Patellofemoral pain syndrome is one of the most common chronic knee injuries; however, little research has been done to determine the risk factors for this injury. HYPOTHESIS Altered lower extremity kinematics and kinetics, decreased strength, and altered postural measurements will be risk factors. STUDY DESIGN Cohort study (prognosis); Level of evidence, 2. METHODS A total of ...

In the present study, we analysed the kinetic profile together with the lower limb EMG activation pattern during a countermovement jump and its respective landing phase in males and females. Twenty subjects (10 males and 10 females) took part in the study. One experimental session was conducted in order to record kinetic and electromyographic (EMG) parameters during a countermovement jump (CMJ)...

This study investigated asymmetry between lower extremities during the landing and takeoff phases of a vertical drop jump (VDJ) in adolescent athletes following anterior cruciate ligament reconstruction (ACLR) examined if performance was affected by reducing height. Thirty-three who underwent ACLR were referred for 3D biomechanical assessment before returning to play (mean age 15.9, SD 1.3 year...