Download or read book The Effects of a Soccer specific Vertical Jump on Landing Mechanics written by Sophia Mancini and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Background: Anterior cruciate ligament (ACL) injury frequently occurs in female soccer athletes during deceleration movements such as landings. In soccer, landings mostly occur following jumping headers. Little research has been done to determine the mechanics that follow and how they compare to standard drop vertical jumps (DVJ). The purpose of this study was to analyze differences between jumps and landings in kinematics, kinetics, and muscle activation patterns in female soccer athletes to better assess the sport-specific risk for ACL injury. It was hypothesized that more biomechanical tendencies associated with ACL risk factors would emerge from soccer-specific vertical jumps (SSVJ) compared to DVJs and second landings (L2) compared to first landings (L1). Methods: 8 female participants (20.88 ± 1.17 years; 1.68 ± 0.06 m; 58.77 ± 7.65 kg) performed DVJs and SSVJs. Motion capture, force, and electromyography (EMG) data were collected to calculate joint motion, loading, and muscle activation throughout landing phases. Data were analyzed using RM-ANOVA, collapsed across jump (DVJ vs. SSVJ) and landing (L1 vs. L2). Results: Significant findings were revealed in all categories, however, kinematic variables were the most profound results. Significantly higher jump height was achieved in DVJs (p=0.008). SSVJs and L2s produced less peak hip (p=0.03; d=0.817) (p=0.007; d=1.566) and knee 2 (p=0.002; d=0.732) (p=0.002; d=1.476) flexion during landing, respectively. A significant interaction was present for trunk flexion at initial contact (p=0.034). Follow-up tests revealed no significant differences following headers. Discussion: SSVJ-L2s displayed a more erect landing at the hip and knee, a known ACL risk factor, however, it is unclear whether these results are due to trunk movement during heading. Limited results in kinetic and EMG variables may be explained by the difference in jump height achieved, therefore further investigation in a more elite population is required. Additionally, SSVJs may be a good sport-specific screening tool.
Download or read book Effects of the Sportsmetrics Exercise Program on Landing Mechanics in Female U 11 Soccer Players written by Sara Lynn Grandstrand and published by . This book was released on 2004 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of a Cognitive Dual Task on Jump landing Mechanics written by Amber J. Schnittjer and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Backgrround: Several studies have investigated biomechanical deficits in jump landing; however, these studies are often performed in a laboratory with little distraction to the participant. Injury has been shown to occur during sport-specific distraction where the individual is cognitively loaded during motor performance. Purpose: The purpose of this study was to determine the effect of a cognitive task on jump-landing mechanics. Methods: A dual-task design was used to determine the effects a cognitive dual task on the tuck-jump assessment and peak vertical ground reaction force in 20 participants.
Download or read book Prevention of Noncontact ACL Injuries written by Letha Y. Griffin and published by Academy. This book was released on 2001 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important work will help you understand: the epidemiology of noncontact ACL injuries; risk factors for injuries; the "at-risk" athlete; neuromuscular prevention programs; their influence on injury rates. Supported by the American Orthopaedic Society for Sports Medicine, the National Athletic Trainers Association Research and Education Foundation, the National Collegiate Athletic Association, and the Orthopaedic Research and Education Foundation.
Download or read book The Effect of an Injjury sic Prevention Training Program on Selected Kinetic and Kinematic Variables Associated with Landing from a Vertical Jump in Women s Collegiate Soccer Players written by Brad Hodgson and published by . This book was released on 2006 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Mid flight Trunk Motion on Landing Mechanics written by Taylour J. Hinshaw and published by . This book was released on 2017 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anterior cruciate ligament (ACL) is a commonly experienced injury that can cause long-term negative health consequences. Previous research has observed increased trunk motion when ACL injuries occur during jump-landing tasks and suggest that trunk perturbation experienced while in the air may be a contributing factor to ACL injuries, however, the cause-effect relationship between trunk motion and ACL loading has not been established. The current researcher quantified the influences that both medial and lateral mid-flight trunk motions on landing biomechanics through center of mass analysis. Results from the current study showed that at initial contact, the upper body moved towards the reaching direction while the pelvis, ipsilateral leg, and contralateral leg moved in the opposite direction for the left and right reaching conditions when compared to the up condition. The ipsilateral leg moved closer to the overall COM and the contralateral leg moved further away, resulting in an asymmetric landing posture. The ipsilateral leg landed earlier for the left and right reaching conditions when compared to the up condition and also experienced a greater amount of vertical ground reaction force putting it at a higher risk for injury. Injury prevention programs should incorporate effective strategies to compensate for trunk motion experienced during the mid-flight of a jump.
Download or read book Neuromuscular Control and Movement Variability in Adolescent Female Soccer Athletes During Simulated Soccer Jump Header Landing Task written by Emily Elizabeth Grammer and published by . This book was released on 2019 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lateral ankle sprain (LAS) is the most common orthopedic injury in athletics and is the result of simultaneous excessive inversion of the ankle and supination of the foot. Following initial LAS, degenerative changes have been found in over 70% of participants for extended periods of time. With the aforementioned degenerative changes typically come alterations in movement patterns, muscle activation patterns, and arthrokinematics. The current study aimed to investigate the effects of LAS history on neuromuscular control during a soccer specific jump-landing task and to illustrate the impact of limb (injured vs. non-injured) on neuromuscular control during a soccer specific jump-landing task in female adolescent athletes (n = 14, age = 16 ± 1.0 yr). A control group (n = 7) and a group designated as the "ankle sprain" group (n = 7) were used. The injured ankles in the ankle sprain group and the dominant limbs of the control group were labeled "affected," while the uninjured limbs of the ankle sprain group and the non-dominant limbs of the control group were labeled "unaffected." Electromyography (EMG) sensors were placed on 6 lower-limb muscles of each participant bilaterally, totaling 12 sensors per participant -- Lateral Gastrocnemius (LG), Peroneus Longus (PL), Tibialis Anterior (TA), Vastus Lateralis (VL), Vastus Medialis (VM), and Biceps Femoris (BF). Each participant completed a 5-minute low-to-moderate intensity warm-up on a cycler ergometer, then completed 10 soccer-header jump-landing trials. There were no significant limb by group interactions (p > 0.05) or group main effects (p > 0.05) found in the current study. Pre-landing data showed significant limb main effects for the vi standard deviation (SD) of the unaffected PL (p = 0.017) and the affected VL (p = 0.048). Furthermore, significant limb main effects were discovered for the COV of pre-landing muscle activation for the PL (p = 0.043), LG (p = 0.049), and VL (p = 0.048). During the post-landing period, significant limb main effects were recorded for the average activation (p = 0.001) and SD (p = 0.003) of the PL and the COV of the VL (p = 0.038). Reduced activation of the nondominant limbs illustrated increased neuromuscular control in the distal musculature (PL), while the proximal musculature (VL) demonstrated reduced neuromuscular control on the unaffected limbs. The current study discovered that limb dominance was a more prominent factor in altered lower-leg neuromuscular control compared to ankle injury history. Limb differences were most likely the result of the sport-specific demands placed on the dominant and non-dominant limbs during soccer, which elicited increased muscular responses of the non-dominant limb during jump-landing tasks.
Download or read book The influence of fatigue on injury risk in male youth soccer written by Michal Lehnert and published by Palacký University Olomouc. This book was released on with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents information regarding changes in lower limb injury risk factors when fatigue is present, and the role of genetics in injury risk in male youth soccer. As many internal risk factors are modifiable, information presented both in the theoretical part of the book and original research studies focuses on the influence of acute, residual and accumulated fatigue on physiological mechanisms are presented to aid sports scientists and coaches to understand the age related effects of fatigue on such factors. This information can help coaches monitor fatigue related responses and be able to create efficient training programmes during important periods of growth and maturation. This will help to enhance performance and reduce injury risk in youth male soccer.
Download or read book The Effects of Ankle Taping and Ankle Bracing on Vertical Jump Performance in Healthy Elite Female Soccer Players written by Laura M. Stroup and published by . This book was released on 2000 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ankle taped, braced, and bare. Therefore, each subject performed eighteen total test jumps for this study. Performance of single-leg vertical jumps initiated from various stride run-up lengths was not significantly affected by ankle taping or bracing. This study failed to show a statistical significance in decreased vertical jump heights in subjects with taped and braced ankles when compared to vertical jump heights in subjects with bare ankles. Ankle taping and bracing are widely accepted practices in sports medicine for injury rehabilitation and prevention. Taping and bracing a sprained ankle allowed athletes to return to sport quickly and safely after sustaining an injury. Researchers found both taping and bracing a sprained ankle reduced the occurrence of reinjury. Athletes often will not compromise performance for safety and injury prevention. Therefore, the chosen prosthetics must not hinder performance as they offer protection. Otherwise, athletes will not be compliant.
Download or read book Understanding and Preventing Noncontact ACL Injuries written by American Orthopaedic Society for Sports Medicine and published by Human Kinetics Publishers. This book was released on 2007 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grade level: 11, 12, i, s, t.
Download or read book The Effect of Landing Force on Vertical Jump Distance written by Charles F. Kwick and published by . This book was released on 1973 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Specific Upper Body Training on Vertical Jump Performance Impulse Force and Coupling Time written by Jay R. Johnson and published by . This book was released on 1995 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neuromuscular Fatigue written by A. J. Sargeant and published by Royal Netherlands Academy of. This book was released on 1993-01-01 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paperback. Neuromuscular fatigue is a phenomenon of great importance in everyday life as well as being of theoretical and clinical significance. Eleven years ago there was a seminal symposium on muscle fatigue held in London. The published proceedings (Ciba Foundation Symposium 82 - Human muscle fatigue: physiological mechanisms, Pitman, London, 1981) served as an important 'state-of-the-art' reference. In the intervening period there have been many developments with respect to our understanding of fatigue of the motor output, including processes located in the skeletal muscle fibres themselves as well as problems related to various aspects of (moto) neural muscle control. However, there are still uncertainties and important questions which remain unanswered. It was felt that the time was ripe to attempt a renewed synthesis by bringing together international experts from a range of complementary research areas. In this way it was hoped that attention co
Download or read book Attention and Motor Skill Learning written by Gabriele Wulf and published by Human Kinetics. This book was released on 2007 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an ideal text for motor behaviour and cognitive psychology courses, as well as a reference for professionals with an interest in motor behaviour and human movement. It explores how focus of attention can affect motor performance, particularly the learning of motor skills.
Download or read book The Effect of Two Types of Plyometric Training in Improving Vertical Jump Ability in Female College Soccer Players written by Jose Miguel Vega Villarreal and published by . This book was released on 1992 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Acute Effect of Depth Jump Volume on Vertical Jump Performance in NCAA DI Women Soccer Players written by Jennie Stieg and published by . This book was released on 2009 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strength and Power in Sport written by Paavo Komi and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this broadly based book continues to examine and update the basic and applied aspects of strength and power in sport from the neurophysiology of the basic motor unit to training for specific activities. Authorship is, again, international and includes leading physiologists and clinicians.
