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Biomechanic running

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https://www.readbyqxmd.com/read/28777956/frontal-plane-kinematics-predict-three-dimensional-hip-adduction-during-running
#1
Mark W Creaby, Scott Le Rossignol, Zachary J Conway, Eva Ageberg, Matthew Sweeney, Melinda M Franettovich Smith
OBJECTIVES: To investigate if frontal plane kinematics are predictive of three dimensional (3D) hip adduction and hip internal rotation during running. STUDY DESIGN: Cross-sectional. SETTING: Biomechanics laboratory. PARTICIPANTS: Thirty healthy male runners aged 18-45 years. MAIN OUTCOME MEASURES: Two dimensional (2D) angles in the frontal plane (peak pelvic obliquity, peak hip adduction, peak femoral valgus, peak knee valgus and peak tibial valgus) and 3D hip adduction and hip internal rotation during stance phase of running were obtained...
June 15, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28772336/the-effect-of-clinical-pilates-on-functional-movement-in-recreational-runners
#2
Anna Laws, Sean Williams, Cassie Wilson
Biomechanical imbalances and inefficient functional movements are considered contributing factors to running-related injuries. Clinical Pilates uses a series of exercises focused on retraining normal movement patterns. This study investigated whether a 6-week course of Clinical Pilates improves functional movement and thereby, potentially, reduces the risk of running-related injuries associated with movement dysfunction. A modified functional movement screen was used to analyze the functional movement ability of forty runners...
August 3, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28768339/habitual-minimalist-shod-running-biomechanics-and-the-acute-response-to-running-barefoot
#3
Nicholas Tam, Ian A J Darragh, Nikhil V Divekar, Robert P Lamberts
The aim of the study was to determine whether habitual minimalist shoe runners present with purported favorable running biomechanithat reduce running injury risk such as initial loading rate. Eighteen minimalist and 16 traditionally cushioned shod runners were assessed when running both in their preferred training shoe and barefoot. Ankle and knee joint kinetics and kinematics, initial rate of loading, and footstrike angle were measured. Sagittal ankle and knee joint stiffness were also calculated. Results of a two-factor ANOVA presented no group difference in initial rate of loading when participants were running either shod or barefoot; however, initial loading rate increased for both groups when running barefoot (p=0...
August 2, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28754421/the-effect-of-visual-focus-on-spatio-temporal-and-kinematic-parameters-of-treadmill-running
#4
Ángel G Lucas-Cuevas, Jose I Priego Quesada, Josh Gooding, Martin G C Lewis, Alberto Encarnación-Martínez, Pedro Perez-Soriano
The characteristics of a treadmill and the environment where it is based could influence the user's gaze and have an effect on their running kinematics and lower limb impacts. The aim of this study was to identify the effect of visual focus on spatio-temporal parameters and lower limb kinematics during treadmill running. Twenty six experienced runners ran at 3.33ms(-1) on a treadmill under two visual conditions, either looking ahead at a wall or looking down at the treadmill visual display. Spatio-temporal parameters, impact accelerations of the head and tibia, and knee and ankle kinematics were measured for the final 15s of a 90s bout of running under each condition...
July 15, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28750263/biomechanical-differences-between-cases-with-chronic-exertional-compartment-syndrome-and-asymptomatic-controls-during-walking-and-marching-gait
#5
Andrew Roberts, David Roscoe, David Hulse, Alexander N Bennett, Sharon Dixon
Chronic exertional compartment syndrome is a significant problem in military populations that may be caused by specific military activities. This study aimed to investigate the kinematic and kinetic differences in military cases with chronic exertional compartment syndrome and asymptomatic controls. 20 males with symptoms of chronic exertional compartment syndrome of the anterior compartment and 20 asymptomatic controls were studied. Three-dimensional lower limb kinematics and kinetics were compared during walking and marching...
July 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28740745/investigating-the-running-abilities-of-tyrannosaurus-rex-using-stress-constrained-multibody-dynamic-analysis
#6
William I Sellers, Stuart B Pond, Charlotte A Brassey, Philip L Manning, Karl T Bates
The running ability of Tyrannosaurus rex has been intensively studied due to its relevance to interpretations of feeding behaviour and the biomechanics of scaling in giant predatory dinosaurs. Different studies using differing methodologies have produced a very wide range of top speed estimates and there is therefore a need to develop techniques that can improve these predictions. Here we present a new approach that combines two separate biomechanical techniques (multibody dynamic analysis and skeletal stress analysis) to demonstrate that true running gaits would probably lead to unacceptably high skeletal loads in T...
2017: PeerJ
https://www.readbyqxmd.com/read/28734700/predicting-muscle-forces-during-the-propulsion-phase-of-single-leg-triple-hop-test
#7
Felipe Costa Alvim, Paulo Roberto Garcia Lucareli, Luciano Luporini Menegaldo
Functional biomechanical tests allow the assessment of musculoskeletal system impairments in a simple way. Muscle force synergies associated with movement can provide additional information for diagnosis. However, such forces cannot be directly measured noninvasively. This study aims to estimate muscle activations and forces exerted during the preparation phase of the single leg triple hop test. Two different approaches were tested: static optimization (SO) and computed muscle control (CMC). As an indirect validation, model-estimated muscle activations were compared with surface electromyography (EMG) of selected hip and thigh muscles...
July 15, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28731978/differences-in-spatiotemporal-parameters-between-trained-runners-and-untrained-participants
#8
Josué Gómez-Molina, Ana Ogueta-Alday, Christopher Stickley, Jesús Cámara, Jon Cabrejas-Ugartondo, Juan García-López
Gómez-Molina, J, Ogueta-Alday, A, Stickley, C, Tobalina, JC, Cabrejas-Ugartondo, J, and García-López, J. Differences in spatiotemporal parameters between trained runners and untrained participants. J Strength Cond Res 31(8): 2169-2175, 2017-The aim of this study was to compare the spatiotemporal parameters of trained runners and untrained participants with the same foot strike pattern (rearfoot) during running at controlled speeds. Twenty-one participants were classified in 2 groups according to their training experience: Trained (n = 10, amateur runners with long distance training experience) and Untrained (n = 11, healthy untrained participants)...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28724627/using-step-width-to-compare-locomotor-biomechanics-between-extinct-non-avian-theropod-dinosaurs-and-modern-obligate-bipeds
#9
P J Bishop, C J Clemente, R E Weems, D F Graham, L P Lamas, J R Hutchinson, J Rubenson, R S Wilson, S A Hocknull, R S Barrett, D G Lloyd
How extinct, non-avian theropod dinosaurs locomoted is a subject of considerable interest, as is the manner in which it evolved on the line leading to birds. Fossil footprints provide the most direct evidence for answering these questions. In this study, step width-the mediolateral (transverse) distance between successive footfalls-was investigated with respect to speed (stride length) in non-avian theropod trackways of Late Triassic age. Comparable kinematic data were also collected for humans and 11 species of ground-dwelling birds...
July 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28714786/effects-of-a-prophylactic-knee-sleeve-on-anterior-cruciate-ligament-loading-during-sport-specific-movements
#10
Jonathan Sinclair, Paul John Taylor
CONTEXT: Prophylactic knee bracing is extensively utilized in athletic populations, to reduce the high risk from knee injuries, but their role in the attenuation of anterior cruciate ligament (ACL) pathologies is not well understood. OBJECTIVE: The aim of the current investigation was to investigate the effects of a prophylactic knee sleeve on ACL loading parameters linked to the aetiology of injury in recreational athletes. SETTING: Laboratory...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28711659/exercise-initiated-after-the-onset-of-insulin-resistance-improves-trabecular-microarchitecture-and-cortical-bone-biomechanics-of-the-tibia-in-hyperphagic-otsuka-long-evans-tokushima-fatty-rats
#11
Laura C Ortinau, Melissa A Linden, Rebecca K Dirkes, R Scott Rector, Pamela S Hinton
The present study extends our previous findings that exercise, which prevents the onset of insulin resistance and type 2 diabetes (T2D), also prevents the detrimental effects of T2D on whole-bone and tissue-level strength. Our objective was to determine whether exercise improves bone's structural and material properties if insulin resistance is already present in the Otsuka Long-Evans Tokushima Fatty (OLETF) rat. The OLETF rat is hyperphagic due to a loss-of-function mutation in cholecystokinin-1 receptor (CCK-1 receptor), which leads to progressive obesity, insulin resistance and T2D after the majority of skeletal growth is complete...
July 12, 2017: Bone
https://www.readbyqxmd.com/read/28690018/adaptations-of-lumbar-biomechanics-after-four-weeks-of-running-training-with-minimalist-footwear-and-technique-guidance-implications-for-running-related-lower-back-pain
#12
Szu-Ping Lee, Joshua P Bailey, Jo Armour Smith, Stephanie Barton, David Brown, Talia Joyce
OBJECTIVES: To investigate the changes in lumbar kinematic and paraspinal muscle activation before, during, and after a 4-week minimalist running training. DESIGN: Prospective cohort study. SETTING: University research laboratory. PARTICIPANTS: Seventeen habitually shod recreational runners who run 10-50 km per week. MAIN OUTCOME MEASURES: During stance phases of running, sagittal lumbar kinematics was recorded using an electrogoniometer, and activities of the lumbar paraspinal muscles were assessed by electromyography...
December 2, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28687149/stiffness-of-a-wobbling-mass-models-analysed-by-a-smooth-orthogonal-decomposition-of-the-skin-movement-relative-to-the-underlying-bone
#13
Raphaël Dumas, Eric Jacquelin
The so-called soft tissue artefacts and wobbling masses have both been widely studied in biomechanics, however most of the time separately, from either a kinematics or a dynamics point of view. As such, the estimation of the stiffness of the springs connecting the wobbling masses to the rigid-body model of the lower limb, based on the in vivo displacements of the skin relative to the underling bone, has not been performed yet. For this estimation, the displacements of the skin markers in the bone-embedded coordinate systems are viewed as a proxy for the wobbling mass movement...
June 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28686085/conceptualizing-minimalist-footwear-an-objective-definition
#14
Devon R Coetzee, Yumna Albertus, Nicholas Tam, Ross Tucker
Running has been plagued with an alarmingly high incidence of injury, which has resulted in the exploration of interventions aimed at reducing the risk of running-related injury. One such intervention is the introduction of footwear that mimics barefoot running. These have been termed minimalist shoes. Minimalist footwear aims to reduce the risk of injury by promoting adaptations in running biomechanics that have been linked to a reduction in both impact and joint forces. However, some studies have found that minimalist footwear may be beneficial to the runner as they promote favourable biomechanical adaptations, whilst other studies have found the opposite to be true...
July 7, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28672004/stroller-running-energetic-and-kinematic-changes-across-pushing-methods
#15
Ryan S Alcantara, Cara M Wall-Scheffler
OBJECTIVE: Running with a stroller provides an opportunity for parents to exercise near their child and counteract health declines experienced during early parenthood. Understanding biomechanical and physiological changes that occur when stroller running is needed to evaluate its health impact, yet the effects of stroller running have not been clearly presented. Here, three commonly used stroller pushing methods were investigated to detect potential changes in energetic cost and lower-limb kinematics...
2017: PloS One
https://www.readbyqxmd.com/read/28667211/criteria-for-return-to-sport-after-anterior-cruciate-ligament-reconstruction-with-lower-reinjury-risk-cr-stal-study-protocol-for-a-prospective-observational-study-in-france
#16
Alexandre J M Rambaud, Bertrand Semay, Pierre Samozino, Jean-Benoît Morin, Rodolphe Testa, Rémi Philippot, Jérémy Rossi, Pascal Edouard
INTRODUCTION: The decision regarding when to return to sport after an anterior cruciate ligament reconstruction (ACLR) is an important one. Using a variety of subjective and objective parameters, various attempts have been made to determine an optimal timeline for a return to sport after ACLR, but none have been validated.The aim of the present study is therefore to determine which criteria or combination of criteria could allow to return to sport with the lowest possible risk of reinjury...
June 30, 2017: BMJ Open
https://www.readbyqxmd.com/read/28662569/the-physiology-of-exercise-in-free-living-vertebrates-what-can-we-learn-from-current-model-systems
#17
Kang Nian Yap, Mitchell W Serota, Tony D Williams
Many behaviors crucial for survival and reproductive success in free-living animals, including migration, foraging, and escaping from predators, involve elevated levels of physical activity. However, although there has been considerable interest in the physiological and biomechanical mechanisms that underpin individual variation in exercise performance, to date, much work on the physiology of exercise has been conducted in laboratory settings that are often quite removed from the animal's ecology. Here we review current, laboratory-based model systems for exercise (wind or swim tunnels for migration studies in birds and fishes, manipulation of exercise associated with non-migratory activity in birds, locomotion in lizards, and wheel running in rodents) to identify common physiological markers of individual variation in exercise capacity and/or costs of increased activity...
June 28, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28659414/how-do-prosthetic-stiffness-height-and-running-speed-affect-the-biomechanics-of-athletes-with-bilateral-transtibial-amputations
#18
Owen N Beck, Paolo Taboga, Alena M Grabowski
Limited available information describes how running-specific prostheses and running speed affect the biomechanics of athletes with bilateral transtibial amputations. Accordingly, we quantified the effects of prosthetic stiffness, height and speed on the biomechanics of five athletes with bilateral transtibial amputations during treadmill running. Each athlete performed a set of running trials with 15 different prosthetic model, stiffness and height combinations. Each set of trials began with the athlete running on a force-measuring treadmill at 3 m s(-1), subsequent trials incremented by 1 m s(-1) until they achieved their fastest attainable speed...
June 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28641058/acute-kinematics-changes-in-marathon-runners-using-different-footwear
#19
Tania Socorro Amorim Soares, Camila Fonseca de Oliveira, Federico Pizzuto, Rui Manuel Garganta, João Paulo Vila-Boas, Mario Casimiro da Anunciação Paiva
The effects of running with or without shoes on injury prevention have been extensively studied, and several investigations have assessed biomechanical differences between them. However, findings are not consensual and further insights on biomechanical load associated with differently shod or barefoot conditions may be needed. This study aimed to observe if habitually shod marathon runners show acute alterations when running barefoot or with minimalist shoes, and to determine whether the running kinematical adaptations of wearing minimalist shoes were similar to barefoot running...
June 22, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28632061/the-effect-of-unilateral-arm-swing-motion-on-lower-extremity-running-mechanics-associated-with-injury-risk
#20
Cristine Agresta, Christian R Ward, W Geoffrey Wright, Carole A Tucker
Many field sports involve equipment that restricts one or both arms from moving while running. Arm swing during running has been examined from a biomechanical and physiologic perspective but not from an injury perspective. Moreover, only bilateral arm swing suppression has been studied with respect to running. The purpose of this study was to determine the influence of running with one arm restrained on lower extremity mechanics associated with running or sport-related injury. Fifteen healthy participants ran at a self-selected speed with typical arm swing, with one arm restrained and with both arms restrained...
February 28, 2017: Sports Biomechanics
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