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Landing biomechanics

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https://www.readbyqxmd.com/read/29350554/quadriceps-neuromuscular-function-and-jump-landing-sagittal-plane-knee-biomechanics-after-anterior-cruciate-ligament-reconstruction
#1
Sarah H Ward, Troy Blackburn, Darin A Padua, Laura E Stanley, Matthew S Harkey, Brittney A Luc-Harkey, Brian G Pietrosimone
CONTEXT:   Aberrant biomechanics may affect force attenuation at the knee during dynamic activities, potentially increasing the risk of sustaining a knee injury or hastening the development of osteoarthritis after anterior cruciate ligament reconstruction (ACLR). Impaired quadriceps neuromuscular function has been hypothesized to influence the development of aberrant biomechanics. OBJECTIVE:   To determine the association between quadriceps neuromuscular function (strength, voluntary activation, and spinal-reflex and corticomotor excitability) and sagittal-plane knee biomechanics during jump landings in individuals with ACLR...
January 19, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29340745/a-6-week-warm-up-injury-prevention-programme-results-in-minimal-biomechanical-changes-during-jump-landings-a-randomized-controlled-trial
#2
Jeffrey B Taylor, Kevin R Ford, Randy J Schmitz, Scott E Ross, Terry A Ackerman, Sandra J Shultz
PURPOSE: To examine the extent to which an ACL injury prevention programme modifies lower extremity biomechanics during single- and double-leg landing tasks in both the sagittal and frontal plane. It was hypothesized that the training programme would elicit improvements in lower extremity biomechanics, but that these improvements would be greater during a double-leg sagittal plane landing task than tasks performed on a single leg or in the frontal plane. METHODS: Ninety-seven competitive multi-directional sport athletes that competed at the middle- or high-school level were cluster randomized into intervention (n = 48, age = 15...
January 16, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29334862/the-effects-of-an-unanticipated-side-cut-on-lower-extremity-kinematics-and-ground-reaction-forces-during-a-drop-landing
#3
Jae P Yom, Tane Owens, Scott Arnett, Justin Beebe, Veronica Son
Unanticipated direction to cut after landing may alter the lower extremity landing biomechanics when performing landing motions. These alterations may potentially increase the risk of ACL injury. The purpose of this study was to determine if an unanticipated side-cut affects lower extremity landing biomechanics in females. Eighteen recreational female athletes participated in two blocks of testing: the first block of testing consisted of three acceptable trials of anticipated dominant limb and non-dominant limb 45-degree diagonal cutting after landing, which were performed in a counterbalanced order...
January 16, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29329889/exploring-individual-adaptations-to-an-anterior-cruciate-ligament-injury-prevention-programme
#4
Aaron S Fox, Jason Bonacci, Scott G McLean, Natalie Saunders
BACKGROUND: Individual responses to anterior cruciate ligament injury prevention programmes (ACL IPPs) have received little attention. This study examined the effects of an ACL IPP on neuromuscular control and lower limb biomechanics during landing at the group and individual levels. METHODS: Sixteen female athletes were randomly allocated to training (n=8) or control (n=8) groups. Electromyography, and three-dimensional kinematic and kinetic data were collected during landing at two testing sessions...
January 9, 2018: Knee
https://www.readbyqxmd.com/read/29318174/sagittal-plane-hip-knee-and-ankle-biomechanics-and-the-risk-of-anterior-cruciate-ligament-injury-a-prospective-study
#5
Mari Leppänen, Kati Pasanen, Tron Krosshaug, Pekka Kannus, Tommi Vasankari, Urho M Kujala, Roald Bahr, Jarmo Perttunen, Jari Parkkari
Background: Stiff landings with less knee flexion and high vertical ground-reaction forces have been shown to be associated with an increased risk of anterior cruciate ligament (ACL) injury. The literature on the association between other sagittal plane measures and the risk of ACL injuries with a prospective study design is lacking. Purpose: To investigate the relationship between selected sagittal plane hip, knee, and ankle biomechanics and the risk of ACL injury in young female team-sport athletes...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29314903/national-athletic-trainers-association-position-statement-prevention-of-anterior-cruciate-ligament-injury
#6
Darin A Padua, Lindsay J DiStefano, Timothy E Hewett, William E Garrett, Stephen W Marshall, Grace M Golden, Sandra J Shultz, Susan M Sigward
OBJECTIVE:   To provide certified athletic trainers, physicians, and other health care and fitness professionals with recommendations based on current evidence regarding the prevention of noncontact and indirect-contact anterior cruciate ligament (ACL) injuries in athletes and physically active individuals. BACKGROUND:   Preventing ACL injuries during sport and physical activity may dramatically decrease medical costs and long-term disability. Implementing ACL injury-prevention training programs may improve an individual's neuromuscular control and lower extremity biomechanics and thereby reduce the risk of injury...
January 9, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29281799/age-influences-biomechanical-changes-after-participation-in-an-anterior-cruciate-ligament-injury-prevention-program
#7
Julie A Thompson-Kolesar, Corey T Gatewood, Andrew A Tran, Amy Silder, Rebecca Shultz, Scott L Delp, Jason L Dragoo
BACKGROUND: The prevalence of anterior cruciate ligament (ACL) injuries increases during maturation and peaks during late adolescence. Previous studies suggested an age-related association between participation in injury prevention programs and reduction of ACL injury. However, few studies have investigated differences in biomechanical changes after injury prevention programs between preadolescent and adolescent athletes. Purpose/Hypothesis: The purpose was to investigate the influence of age on the effects of the FIFA Medical and Research Centre (F-MARC) 11+ injury prevention warm-up program on differences in biomechanical risk factors for ACL injury between preadolescent and adolescent female soccer players...
December 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29233241/protective-knee-braces-and-the-biomechanics-of-the-half-squat-parachute-landing
#8
Di Wu, Chao Zheng, Ji Wu, Longfeng Wang, Xiang Wei, Lizheng Wang
INTRODUCTION: Knee injuries are common among paratroopers and skydivers during landing maneuvers. The aim of this study was to investigate the effects of dropping height and the use of protective knee braces on parachute landing biomechanics. METHODS: The study cohort consisted of 30 male elite paratroopers with formal parachute landing training and more than 2 yr of parachute jumping experience. Each participant was instructed to jump off a platform at two different heights (40 and 80 cm, respectively) and land on force plates in a half-squat posture...
January 1, 2018: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29227730/physical-and-performance-characteristics-related-to-unintentional-musculoskeletal-injury-in-special-forces-operators-a-prospective-analysis
#9
Nicholas R Heebner, John P Abt, Mita Lovalekar, Kim Beals, Timothy C Sell, Jeffery Morgan, Shawn Kane, Scott Lephart
CONTEXT:   Seventy-seven percent of musculoskeletal injuries sustained by United States Army Special Forces Operators are preventable. Identification of predictive characteristics will promote the development of screening methods to augment injury-prevention programs. OBJECTIVE:   To determine physical and performance characteristics that predict musculoskeletal injuries. SETTING:   Clinical laboratory. PATIENTS OR OTHER PARTICIPANTS:   A total of 95 Operators (age = 32...
December 11, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29194184/biomechanical-comparison-of-loaded-countermovement-jumps-performed-on-land-and-in-water
#10
Talin Louder, Eadric Bressel, Clint Nardoni, Dennis Dolny
Researchers have observed physical improvements following the completion of aquatic-based jump training. However, there is a lack of research on the biomechanical specificity of aquatic-based movement. Therefore, the purpose of this investigation was to evaluate the kinetics and kinematics of loaded countermovement jumps performed in water versus land. Twenty young males and twenty-four NCAA division I women's soccer and gymnastics athletes were asked to perform unloaded and loaded countermovement jumps on land and in chest-deep water immersion...
November 29, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29193314/effects-of-wobble-board-training-on-single-leg-landing-neuromechanics
#11
Priscila de Brito Silva, Anderson Souza Castelo Oliveira, Natalie Mrachacz-Kersting, Uwe Gustav Kersting
Balance training programs have been shown to reduce ankle sprain injuries in sports, but little is known about the transfer from this training modality to motor coordination and ankle joint biomechanics in sport specific movements. This study aimed to investigate the effects of wobble board training on motor coordination and ankle mechanics during early single-leg landing from a lateral jump. Twenty-two healthy men were randomly assigned to either a control or a training group, who engaged in four weeks of wobble board training...
November 29, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29185004/poor-knee-function-after-acl-reconstruction-is-associated-with-attenuated-landing-force-and-knee-flexion-moment-during-running
#12
Luke G Perraton, Michelle Hall, Ross A Clark, Kay M Crossley, Yong-Hao Pua, Tim S Whitehead, Hayden G Morris, Adam G Culvenor, Adam L Bryant
PURPOSE: Poor knee function after anterior cruciate ligament reconstruction (ACLR) may increase the risk of future knee symptoms and knee osteoarthritis via abnormal knee joint loading patterns, particularly during high-impact activity. This study aimed to assess the relationship between poor self-reported or clinically measured knee function and knee moments/vertical ground reaction force (vGRF) in individuals following ACLR. METHODS: 61 participants (mean 16.5 ± 3 months following ACLR, 23 women) completed a patient-reported knee function questionnaire and three hop tests (% of uninvolved limb)...
November 28, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29175719/does-chronic-ankle-instability-influence-lower-extremity-muscle-activation-of-females-during-landing
#13
Yumeng Li, Jupil Ko, Marika A Walker, Cathleen N Brown, Julianne D Schmidt, Seock-Ho Kim, Kathy J Simpson
Much remains unclear about how chronic ankle instability (CAI) could affect knee muscle activations and interact with knee biomechanics. Therefore, the purpose of this study was to assess the influence of CAI on the lower extremity muscle activation at the ankle and knee joints during landings on a tilted surface. A surface electromyography system and two force plates were used to collect lower extremity muscle activation of 21 young female individuals with CAI and 21 pair-matched controls during a double-leg landing with test limb landing on the tilted surface...
November 22, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29163225/human-locomotion-in-hypogravity-from-basic-research-to-clinical-applications
#14
REVIEW
Francesco Lacquaniti, Yury P Ivanenko, Francesca Sylos-Labini, Valentina La Scaleia, Barbara La Scaleia, Patrick A Willems, Myrka Zago
We have considerable knowledge about the mechanisms underlying compensation of Earth gravity during locomotion, a knowledge obtained from physiological, biomechanical, modeling, developmental, comparative, and paleoanthropological studies. By contrast, we know much less about locomotion and movement in general under sustained hypogravity. This lack of information poses a serious problem for human space exploration. In a near future humans will walk again on the Moon and for the first time on Mars. It would be important to predict how they will move around, since we know that locomotion and mobility in general may be jeopardized in hypogravity, especially when landing after a prolonged weightlessness of the space flight...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29163219/neuromuscular-training-improves-lower-extremity-biomechanics-associated-with-knee-injury-during-landing-in-11-13-year-old-female-netball-athletes-a-randomized-control-study
#15
Amanda J Hopper, Erin E Haff, Christopher Joyce, Rhodri S Lloyd, G Gregory Haff
The purpose of this study was to examine the effects of a neuromuscular training (NMT) program on lower-extremity biomechanics in youth female netball athletes. The hypothesis was that significant improvements would be found in landing biomechanics of the lower-extremities, commonly associated with anterior cruciate ligament (ACL) injury, following NMT. Twenty-three athletes (age = 12.2 ± 0.9 years; height = 1.63 ± 0.08 m; mass = 51.8 ± 8.5 kg) completed two testing sessions separated by 7-weeks and were randomly assigned to either a experimental or control group...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29154692/landing-kinematics-and-kinetics-at-the-knee-during-different-landing-tasks
#16
Nicholas R Heebner, Deirdre M Rafferty, Meleesa F Wohleber, Andrew J Simonson, Mita Lovalekar, Andrew Reinert, Timothy C Sell
CONTEXT:   Several tasks have been used to examine landing biomechanics for evaluation and rehabilitation, especially as related to anterior cruciate ligament injuries. However, comparing results among studies in which different tasks were used can be difficult, and it is unclear which task may be most appropriate. OBJECTIVE:   To compare lower extremity biomechanics across 5 commonly used landing tasks. DESIGN:   Descriptive laboratory study...
November 20, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29098684/comparative-hindlimb-myology-of-foot-propelled-swimming-birds
#17
Glenna T Clifton, Jennifer A Carr, Andrew A Biewener
Several groups of birds have convergently evolved the ability to swim using their feet despite facing trade-offs with walking. However, swimming relative to terrestrial performance varies across these groups. Highly specialized divers, such as loons and grebes, excel at swimming underwater but struggle to stand on land, whereas species that primarily swim on the water surface, such as Mallards, retain the ability to move terrestrially. The identification of skeletal features associated with a swimming style and conserved across independent groups suggests that the hindlimb of foot-propelled swimming birds has adapted to suit the physical challenges of producing propulsive forces underwater...
November 3, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29097231/poor-anaerobic-power-capability-and-static-balance-predicted-prospective-musculoskeletal-injuries-among-soldiers-of-the-101st-airborne-air-assault-division
#18
Takashi Nagai, Mita Lovalekar, Meleesa F Wohleber, Katherine A Perlsweig, Michael D Wirt, Kim Beals
Musculoskeletal injuries have negatively impacted tactical readiness. The identification of prospective and modifiable risk factors of preventable musculoskeletal injuries can guide specific injury prevention strategies for Soldiers and health care providers. OBJECTIVES: To analyze physiological and neuromuscular characteristics as predictors of preventable musculoskeletal injuries. DESIGN: Prospective-cohort study. METHODS: A total of 491 Soldiers were enrolled and participated in the baseline laboratory testing, including body composition, aerobic capacity, anaerobic power/capacity, muscular strength, flexibility, static balance, and landing biomechanics...
October 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29065078/biomechanical-differences-of-multidirectional-jump-landings-among-female-basketball-and-soccer-players
#19
Jeffrey B Taylor, Kevin R Ford, Randy J Schmitz, Scott E Ross, Terry A Ackerman, Sandra J Shultz
Taylor, JB, Ford, KR, Schmitz, RJ, Ross, SE, Ackerman, TA, and Shultz, SJ. Biomechanical differences of multidirectional jump landings among female basketball and soccer players. J Strength Cond Res 31(11): 3034-3045, 2017-Anterior cruciate ligament (ACL) injury prevention programs are less successful in basketball than soccer and may be due to distinct movement strategies that these athletes develop from sport-specific training. The purpose of this study was to identify biomechanical differences between female basketball and soccer players during multidirectional jump landings...
November 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29043110/neurodynamic-mobilization-and-foam-rolling-improved-delayed-onset-muscle-soreness-in-a-healthy-adult-population-a-randomized-controlled-clinical-trial
#20
Blanca Romero-Moraleda, Roy La Touche, Sergio Lerma-Lara, Raúl Ferrer-Peña, Víctor Paredes, Ana Belén Peinado, Daniel Muñoz-García
OBJECTIVES: Compare the immediate effects of a Neurodynamic Mobilization (NM) treatment or foam roller (FR) treatment after DOMS. DESIGN: Double blind randomised clinical trial. SETTING: The participants performed 100 drop jumps (5 sets of 20 repetitions, separated by 2 min rests) from a 0.5-m high box in a University biomechanics laboratory to induce muscle soreness. The participants were randomly assigned in a counter-balanced fashion to either a FR or NM treatment group...
2017: PeerJ
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