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Biomechanic running

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https://www.readbyqxmd.com/read/28641058/acute-kinematics-changes-in-marathon-runners-using-different-footwear
#1
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
#2
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
https://www.readbyqxmd.com/read/28632055/muscle-activity-in-sprinting-a-review
#3
Róisín M Howard, Richard Conway, Andrew J Harrison
The use of electromyography (EMG) is widely recognised as a valuable tool for enhancing the understanding of performance drivers and potential injury risk in sprinting. The timings of muscle activations relative to running gait cycle phases and the technology used to obtain muscle activation data during sprinting are of particular interest to scientists and coaches. This review examined the main muscles being analysed by surface EMG (sEMG), their activations and timing, and the technologies used to gather sEMG during sprinting...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28624711/does-the-powers%C3%A2-strap-influence-the-lower-limb-biomechanics-during-running
#4
Henrike Greuel, Lee Herrington, Anmin Liu, Richard K Jones
Previous research has reported a prevalence of running related injuries in 25.9% to 72% of all runners. A greater hip internal rotation and adduction during the stance phase in running has been associated with many running related injuries, such as patellofemoral pain. Researchers in the USA designed a treatment device 'the Powers™ strap' to facilitate an external rotation of the femur and to thereby control abnormal hip and knee motion during leisure and sport activities. However, to date no literature exists to demonstrate whether the Powers™ strap is able to reduce hip internal rotation during running...
June 3, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28607062/biomechanical-coupling-facilitates-spinal-neural-tube-closure-in-mouse-embryos
#5
Gabriel L Galea, Young-June Cho, Gauden Galea, Matteo A Molè, Ana Rolo, Dawn Savery, Dale Moulding, Lucy H Culshaw, Evanthia Nikolopoulou, Nicholas D E Greene, Andrew J Copp
Neural tube (NT) formation in the spinal region of the mammalian embryo involves a wave of "zippering" that passes down the elongating spinal axis, uniting the neural fold tips in the dorsal midline. Failure of this closure process leads to open spina bifida, a common cause of severe neurologic disability in humans. Here, we combined a tissue-level strain-mapping workflow with laser ablation of live-imaged mouse embryos to investigate the biomechanics of mammalian spinal closure. Ablation of the zippering point at the embryonic dorsal midline causes far-reaching, rapid separation of the elevating neural folds...
June 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28585281/the-deep-fascia-and-retinacula-of-the-equine-forelimb-structure-and-innervation
#6
Aleksandra Skalec, Monika Egerbacher
Recent advances in human fascia research have shed new light on the role of the fascial network in movement perception and coordination, transmission of muscle force, and integrative function in body biomechanics. Evolutionary adaptations of equine musculoskeletal apparatus that assure effective terrestrial locomotion are employed in equestrianism, resulting in the wide variety of movements in performing horses, from sophisticated dressage to jumping and high-speed racing. The high importance of horse motion efficiency in the present-day equine industry indicates the significance of scientific knowledge of the structure and physiology of equine fasciae...
June 5, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28581815/biomechanical-factors-associated-with-achilles-tendinopathy-and-medial-tibial-stress-syndrome-in-runners
#7
James Becker, Stanley James, Robert Wayner, Louis Osternig, Li-Shan Chou
BACKGROUND: There is disagreement in the literature regarding whether the excessive excursion or velocity of rearfoot eversion is related to the development of 2 common running injuries: Achilles tendinopathy (AT) and medial tibial stress syndrome (MTSS). An alternative hypothesis suggests that the duration of rearfoot eversion may be an important factor. However, the duration of eversion has received relatively little attention in the biomechanics literature. HYPOTHESIS: Runners with AT or MTSS will demonstrate a longer duration of eversion but not greater excursion or velocity of eversion compared with healthy controls...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28561380/functional-adaptation-of-the-calcaneus-in-historical-foot-binding
#8
Natalie Reznikov, Carina Phillips, Martyn Cooke, Amin Garbout, Farah Ahmed, Molly M Stevens
The normal structure of human feet is optimized for shock dampening during walking and running. Foot binding was a historical practice in China aimed at restricting the growth of female feet for aesthetic reasons. In a bound foot the shock-dampening function normally facilitated by the foot arches is withdrawn, resulting in the foot functioning as a rigid extension of the lower leg. An interesting question inspiring this study regards the nature of adaptation of the heel bone to this non-physiological function using the parameters of cancellous bone anisotropy and 3D fabric topology using a novel inter-trabecular angle (ITA) analysis...
May 31, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28560325/harnessing-the-hygroscopic-and-biofluorescent-behaviors-of-genetically-tractable-microbial-cells-to-design-biohybrid-wearables
#9
Wen Wang, Lining Yao, Chin-Yi Cheng, Teng Zhang, Hiroshi Atsumi, Luda Wang, Guanyun Wang, Oksana Anilionyte, Helene Steiner, Jifei Ou, Kang Zhou, Chris Wawrousek, Katherine Petrecca, Angela M Belcher, Rohit Karnik, Xuanhe Zhao, Daniel I C Wang, Hiroshi Ishii
Cells' biomechanical responses to external stimuli have been intensively studied but rarely implemented into devices that interact with the human body. We demonstrate that the hygroscopic and biofluorescent behaviors of living cells can be engineered to design biohybrid wearables, which give multifunctional responsiveness to human sweat. By depositing genetically tractable microbes on a humidity-inert material to form a heterogeneous multilayered structure, we obtained biohybrid films that can reversibly change shape and biofluorescence intensity within a few seconds in response to environmental humidity gradients...
May 2017: Science Advances
https://www.readbyqxmd.com/read/28558442/specific-physiological-and-biomechanical-performance-in-elite-sub-elite-and-in-non-elite-male-team-handball-players
#10
Herbert Wagner, Philip X Fuchs, Serge P von Duvillard
BACKGROUND: Team handball is a dynamic sport game that is played professionally in numerous countries. However, knowledge about training and competition is based mostly on practical experience due to limited scientific studies. Consequently, the aims of our study were to compare specific physiological and biomechanical performance in elite, sub-elite and in non-elite male team handball players. METHODS: Thirty-six elite, sub-elite and non-elite male team handball players performed a game based performance test, upper-body and lower-body strength tests, 30m sprint test, counter movement jump test and an incremental treadmill running test...
May 30, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28552932/biomechanical-properties-of-alternative-suture-technique-for-flexor-tendon-repair
#11
Tomasz Andrzejewski, Piotr Czarnecki, Mikołaj Dąbrowski, Robert Spławski, Piotr Rogala, Leszek Romanowski
PURPOSE: Flexor injuries are most common in the hand and require special attention and experience from the surgeon. Both quality and technique affect the stability of the suture. The selection of the optimum method will influence the process of rehabilitation. The aim of this study was to compare three different suture techniques based on the strength, depending on the method of breakage, i.e., axial or pulley load. METHODS: The study was divided into six sessions...
2017: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/28551468/effects-of-different-movement-modes-on-plantar-pressure-distribution-patterns-in-obese-and-non-obese-chinese-children
#12
Yan Song-Hua, Wang Lu, Zhang Kuan
Walking, slow running (jogging) and fast running often occur in daily life, Physical Education Class and Physical Fitness Test for children. However, potential impact of jogging and running on plantar pressure of children is not clear. The purpose of this study was to compare the characteristics of plantar pressure distribution patterns in obese and non-obese children during walking, jogging and running, and evaluate biomechanical effects of three movements on obese children. A 2-m footscan plantar pressure plate (RSscan International, Belgium) was used to collect the gait data of 20 obese children (10...
May 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28544949/the-influence-of-shoe-aging-on-children-running-biomechanics
#13
Alexis Herbaut, Pascale Chavet, Maxime Roux, Nils Guéguen, Franck Barbier, Emilie Simoneau-Buessinger
Athletic children are prone to overuse injuries, especially at the heel and knee. Since footwear is an extrinsic factor of lower limb injury risk, the aim of this study was to assess the influence of shoe aging on children running biomechanics. Fourteen children active in sports participated in a laboratory biomechanical evaluation. A new pair of shoes was provided to each participant at an inclusion visit. Four months later, the participants performed a running task and their kinematics and kinetics were assessed both with their used shoes and with a new pair of shoes identical to the first...
July 2017: Gait & Posture
https://www.readbyqxmd.com/read/28525481/comparison-of-the-clinical-and-radiographic-results-between-cervical-artificial-disk-replacement-and-anterior-cervical-fusion-a-6-year-prospective-nonrandomized-comparative-study
#14
Wei Tian, Kai Yan, Xiao Han, Jie Yu, Peihao Jin, Xiaoguang Han
STUDY DESIGN: Prospective nonrandomized comparative study. OBJECTIVE: To compare the long-term clinical and radiographic results of cervical artificial disk replacement (CADR) and anterior cervical discectomy and fusion (ACDF), and to provide our evidence if CADR could reduce adjacent segment degeneration (ASD). SUMMARY OF BACKGROUND DATA: CADR is widely used in spine surgery today. Despite the short-term results of it having been ascertained, the long-term results are still under observation...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28515449/the-role-of-stride-frequency-for-walk-to-run-transition-in-humans
#15
Ernst Albin Hansen, Lasse Andreas Risgaard Kristensen, Andreas Møller Nielsen, Michael Voigt, Pascal Madeleine
It remains unclear why humans spontaneously shift from walking to running at a certain point during locomotion at gradually increasing velocity. We show that a calculated walk-to-run transition stride frequency (70.6 ± 3.2 strides min(-1)) agrees with a transition stride frequency (70.8 ± 3.1 strides min(-1)) predicted from the two stride frequencies applied during treadmill walking and running at freely chosen velocities and freely chosen stride frequencies. The agreement is based on Bland and Altman's statistics...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28503539/differences-in-pes-planus-and-pes-cavus-subtalar-eversion-inversion-before-and-after-prolonged-running-using-a-two-dimensional-digital-analysis
#16
Charlotte Sinclair, Ulla Svantesson, Rita Sjöström, Marie Alricsson
In sports, there is a constant discussion about the hyper-pronation and supination of the foot during loading and its relation to injuries or discomfort. The purpose of the present study was to investigate the possible differences in the subtalar joint in the midstance phase of running, between individuals with Pes Planus and Pes Cavus, after 5 min and 45 min of running. Thirty-four subjects, meeting the requirements for Pes Planus (30 feet) and Pes Cavus (35 feet), according to the criteria for Medial Longitudinal Arch-angle, were included in the study...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28503379/a-public-dataset-of-running-biomechanics-and-the-effects-of-running-speed-on-lower-extremity-kinematics-and-kinetics
#17
Reginaldo K Fukuchi, Claudiane A Fukuchi, Marcos Duarte
BACKGROUND: The goals of this study were (1) to present the set of data evaluating running biomechanics (kinematics and kinetics), including data on running habits, demographics, and levels of muscle strength and flexibility made available at Figshare (DOI: 10.6084/m9.figshare.4543435); and (2) to examine the effect of running speed on selected gait-biomechanics variables related to both running injuries and running economy. METHODS: The lower-extremity kinematics and kinetics data of 28 regular runners were collected using a three-dimensional (3D) motion-capture system and an instrumented treadmill while the subjects ran at 2...
2017: PeerJ
https://www.readbyqxmd.com/read/28496411/calf-compression-sleeves-change-biomechanics-but-not-performance-and-physiological-responses-in-trail-running
#18
Hugo A Kerhervé, Pierre Samozino, Fabrice Descombe, Matthieu Pinay, Guillaume Y Millet, Marion Pasqualini, Thomas Rupp
Introduction: The aim of this study was to determine whether calf compression sleeves (CS) affects physiological and biomechanical parameters, exercise performance, and perceived sensations of muscle fatigue, pain and soreness during prolonged (~2 h 30 min) outdoor trail running. Methods: Fourteen healthy trained males took part in a randomized, cross-over study consisting in two identical 24-km trail running sessions (each including one bout of running at constant rate on moderately flat terrain, and one period of all-out running on hilly terrain) wearing either degressive CS (23 ± 2 mmHg) or control sleeves (CON, <4 mmHg)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28488928/do-subjective-assessments-of-running-patterns-reflect-objective-parameters
#19
Thibault Lussiana, Cyrille Gindre, Laurent Mourot, Kim Hébert-Losier
Running patterns are often categorized into subgroups according to common features before data analysis and interpretation. The Volodalen(®) method is a simple field-based tool used to classify runners into aerial or terrestrial using a 5-item subjective rating scale. We aimed to validate the Volodalen(®) method by quantifying the relationship between its subjective scores and 3D biomechanical measures. Fifty-four runners ran 30 s on a treadmill at 10, 12, 14, 16, and 18 km h(-1) while their kinematics were assessed subjectively using the Volodalen(®) method and objectively using 3D motion capture...
August 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28482203/transition-from-shod-to-barefoot-alters-dynamic-stability-during-running
#20
Antonis Ekizos, Alessandro Santuz, Adamantios Arampatzis
INTRODUCTION: Barefoot running recently received increased attention, with controversial results regarding its effects on injury risk and performance. Numerous studies examined the kinetic and kinematic changes between the shod and the barefoot condition. Intrinsic parameters such as the local dynamic stability could provide new insight regarding neuromuscular control when immediately transitioning from one running condition to the other. We investigated the local dynamic stability during the change from shod to barefoot running...
July 2017: Gait & Posture
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