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https://www.readbyqxmd.com/read/29501914/foot-and-ankle-kinematics-in-chronic-ankle-instability-subjects-using-a-midfoot-strike-pattern-when-running-including-influence-of-taping
#1
Kevin Deschamps, Giovanni Arnoldo Matricali, Bart Dingenen, Jente De Boeck, Sarah Bronselaer, Filip Staes
BACKGROUND: Investigate differences in multi-segment foot kinematics between controls and participants with chronic ankle instability during running with a midfoot striking pattern and to evaluate the effect of Low-Dye and High-Dye taping. METHODS: Three-dimensional multi-segment foot kinematics of 12 controls and 15 participants with chronic ankle instability were collected while running barefoot, and in both taping conditions. Ranges of motion occurring at each joint, each sub phase of stance, were compared between groups and between taping conditions (0-dimensional inference)...
February 27, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29413786/arch-index-and-running-biomechanics-in-children-aged-10-14-years
#2
Karsten Hollander, Julie Stebbins, Inke Marie Albertsen, Daniel Hamacher, Kornelia Babin, Claudia Hacke, Astrid Zech
BACKGROUND: While altered foot arch characteristics (high or low) are frequently assumed to influence lower limb biomechanics and are suspected to be a contributing factor for injuries, the association between arch characteristics and lower limb running biomechanics in children is unclear. RESEARCH QUESTION: Therefore, the aim of this study was to investigate the relationship between a dynamically measured arch index and running biomechanics in healthy children...
February 1, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29343184/foot-strike-pattern-in-preschool-children-during-running-sex-and-shod-unshod-differences
#3
Pedro Á Latorre-Román, Juan A Párraga-Montilla, Ignacio Guardia-Monteagudo, Felipe García-Pinillos
PURPOSE: This study aims to determine the foot strike patterns (FSPs) and neutral support (no inversion [INV]/eversion [EVE] and no foot rotation) in preschool children, as well as to determine the influence of shod/unshod conditions and sex. METHODS: A total of 1356 children aged 3-6 years (673 boys and 683 girls) participated in this study. A sagittal and frontal-plane video (240 Hz) was recorded using a high-speed camcorder to record the following variables: rearfoot strike (RFS), midfoot strike (MFS), forefoot strike (FFS), inversion/ eversion (INV/EVE) and foot rotation on initial contact...
January 17, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29213246/the-influence-of-footwear-on-the-modular-organization-of-running
#4
Alessandro Santuz, Antonis Ekizos, Lars Janshen, Vasilios Baltzopoulos, Adamantios Arampatzis
For most of our history, we predominantly ran barefoot or in minimalist shoes. The advent of modern footwear, however, might have introduced alterations in the motor control of running. The present study investigated shod and barefoot running under the perspective of the modular organization of muscle activation, in order to help addressing the neurophysiological factors underlying human locomotion. On a treadmill, 20 young and healthy inexperienced barefoot runners ran shod and barefoot at preferred speed (2...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29145687/foot-strike-patterns-differ-between-children-and-adolescents-growing-up-barefoot-vs-shod
#5
Karsten Hollander, Johanna Elsabe de Villiers, Ranel Venter, Susanne Sehner, Karl Wegscheider, Klaus-Michael Braumann, Astrid Zech
Effects of early and permanent footwear use are not well understood. The aim of this study was to investigate the effects of habituation to footwear on foot strike patterns of children and adolescents. Healthy habitually barefoot and shod participants (aged 6-18 years) from South Africa (n=288) and Germany (n=390) performed multiple 20-m jogging and running trials with and without shoes. Each foot strike was captured using a high-speed camera to determine a rearfoot or non-rearfoot strike. The probability of a rearfoot strike in both cohorts and each age was analyzed by using a mixed-effects logistic regression adjusted for possible confounders...
February 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29141022/trabecular-bone-in-the-calcaneus-of-runners
#6
Andrew Best, Brigitte Holt, Karen Troy, Joseph Hamill
Trabecular bone of the human calcaneus is subjected to extreme repetitive forces during endurance running and should adapt in response to this strain. To assess possible bone functional adaptation in the posterior region of the calcaneus, we recruited forefoot-striking runners (n = 6), rearfoot-striking runners (n = 6), and non-runners (n = 6), all males aged 20-41 for this institutionally approved study. Foot strike pattern was confirmed for each runner using a motion capture system. We obtained high resolution peripheral computed tomography scans of the posterior calcaneus for both runners and non-runners...
2017: PloS One
https://www.readbyqxmd.com/read/29100250/gait-retraining-from-rearfoot-strike-to-forefoot-strike-does-not-change-running-economy
#7
RANDOMIZED CONTROLLED TRIAL
Jenevieve Lynn Roper, Deborah Doerfler, Len Kravitz, Janet S Dufek, Christine Mermier
Gait retraining is a method for management of patellofemoral pain, which is a common ailment among recreational runners. The present study investigated the effects of gait retraining from rearfoot strike to forefoot strike on running economy, heart rate, and respiratory exchange ratio immediately post-retraining and one-month post-retraining in recreational runners with patellofemoral pain. Knee pain was also measured. Sixteen participants (n=16) were randomly placed in the control (n=8) or experimental (n=8) group...
December 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29031665/stress-distribution-of-metatarsals-during-forefoot-strike-versus-rearfoot-strike-a-finite-element-study
#8
Shudong Li, Yan Zhang, Yaodong Gu, James Ren
Due to the limitations of experimental approaches, comparison of the internal deformation and stresses of the human man foot between forefoot and rearfoot landing is not fully established. The objective of this work is to develop an effective FE modelling approach to comparatively study the stresses and energy in the foot during forefoot strike (FS) and rearfoot strike (RS). The stress level and rate of stress increase in the Metatarsals are established and the injury risk between these two landing styles is evaluated and discussed...
September 25, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28900572/return-to-running-following-a-knee-disarticulation-amputation-a-case-report
#9
Angela R Diebal-Lee, Robert S Kuenzi, Christopher A Rábago
BACKGROUND AND PURPOSE: The evolution of running-specific prostheses has empowered athletes with lower extremity amputations to run farther and faster than previously thought possible; but running with proper mechanics is still paramount to an injury-free, active lifestyle. The purpose of this case report was to describe the successful alteration of intact limb mechanics from a Rearfoot Striking (RFS) to a Non-Rearfoot Striking (NRFS) pattern in an individual with a knee disarticulation amputation, the associated reduction in Average Vertical Loading Rate (AVLR), and the improvement in functional performance following the intervention...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28900568/can-runners-perceive-changes-in-heel-cushioning-as-the-shoe-ages-with-increased-mileage
#10
Mark W Cornwall, Thomas G McPoil
BACKGROUND: For those runners who utilize footwear and have a rearfoot strike pattern, the durability of the midsole heel region has been shown to deteriorate as shoe mileage increases. PURPOSE: The purpose of this study was threefold: 1) to determine if the runner can self-report changes in heel cushioning properties of the midsole after an extended period of distance running, 2) to determine if force and plantar pressures measured in the heel region of the midsole using a capacitance sensor insole change after running 640 km, and 3) to determine if a durometer could be used clinically to objectively measure changes in the hardness of the material in the heel region of the midsole...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28853317/shoe-drop-reduction-influences-the-lower-limb-biomechanics-of-children-tennis-players-during-an-open-stance-forehand-a-longitudinal-study
#11
Alexis Herbaut, Emilie Simoneau-Buessinger, Franck Barbier, Christophe Gillet, Maxime Roux, Nils GuéGuen, Pascale Chavet
Compared to traditional tennis shoes, using 0-drop shoes was shown to induce an immediate switch from rear- to forefoot strike pattern to perform an open stance tennis forehand for 30% of children tennis players. The purpose of the study was to examine the long-term effects of a gradual reduction in the shoe drop on the biomechanics of children tennis players performing open stance forehands. Thirty children tennis players participated in 2 laboratory biomechanical test sessions (intermediate: +4 months and final: +8 months) after an inclusion visit where they were randomly assigned to control (CON) or experimental (EXP) group...
August 30, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28822329/changes-in-gluteal-muscle-forces-with-alteration-of-footstrike-pattern-during-running
#12
Charles Nathan Vannatta, Thomas W Kernozek, Naghmeh Gheidi
Gait retraining is a common form of treatment for running related injuries. Proximal factors at the hip have been postulated as having a role in the development of running related injuries. How altering footstrike affects hip muscles forces and kinematics has not been described. Thus, we aimed to quantify differences in hip muscle forces and hip kinematics that may occur when healthy runners are instructed to alter their foot strike pattern from their habitual rear-foot strike to a forefoot strike. This may gain insight on the potential etiology and treatment methods of running related lower extremity injury...
October 2017: Gait & Posture
https://www.readbyqxmd.com/read/28812039/three-dimensional-biomechanical-analysis-of-rearfoot-and-forefoot-running
#13
Sebastian Knorz, Felix Kluge, Kolja Gelse, Stefan Schulz-Drost, Thilo Hotfiel, Matthias Lochmann, Björn Eskofier, Sebastian Krinner
BACKGROUND: In the running community, a forefoot strike (FFS) pattern is increasingly preferred compared with a rearfoot strike (RFS) pattern. However, it has not been fully understood which strike pattern may better reduce adverse joint forces within the different joints of the lower extremity. PURPOSE: To analyze the 3-dimensional (3D) stress pattern in the ankle, knee, and hip joint in runners with either a FFS or RFS pattern. STUDY DESIGN: Descriptive laboratory study...
July 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28806710/foot-strike-pattern-in-children-during-shod-unshod-running
#14
Pedro Ángel Latorre Román, Fernando Redondo Balboa, Felipe García Pinillos
The purpose of this study was to determine the foot strike patterns (FSPs) and neutral support (no INV/EVE and no foot rotation) in children, as well as to determine the influence of shod/unshod conditions and sex. A total of 713 children, aged 6 to 16 years, participated in this study (Age=10.28±2.71years, body mass index [BMI]=19.70±3.91kg/m(2), 302 girls and 411 boys). A sagittal and frontal-plane video (240Hz) was recorded using a high-speed camcorder, to record the following variables: rearfoot strike (RFS), midfoot strike (MFS), forefoot strike (FFS), inversion/eversion (INV/EVE) and foot rotation on initial contact...
October 2017: Gait & Posture
https://www.readbyqxmd.com/read/28731978/differences-in-spatiotemporal-parameters-between-trained-runners-and-untrained-participants
#15
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/28728130/superficial-plantar-cutaneous-sensation-does-not-trigger-barefoot-running-adaptations
#16
M A Thompson, K M Hoffman
It has long been proposed that the gait alterations associated with barefoot running are mediated by alterations in sensory feedback, yet there has been no data to support this claim. Thus, the purpose of this study was to examine the role of superficial plantar cutaneous feedback in barefoot and shod running. METHODS: 10 healthy active subjects (6 male, 4 female); mass: 65.2+9.7kg; age: 27+7.1years participated in this study. 10 over-ground running trials were completed in each of the following conditions: barefoot (BF), shod (SHOD), anesthetized barefoot (ANEST BF) and anesthetized shod (ANEST SHOD)...
September 2017: Gait & Posture
https://www.readbyqxmd.com/read/28632060/the-collision-forces-and-lower-extremity-inter-joint-coordination-during-running
#17
Li-I Wang, Chin-Yi Gu, I-Lin Wang, Sheng-Wun Siao, Szu-Ting Chen
The purpose of this study was to compare the lower extremity inter-joint coordination of different collision forces runners during running braking phase. A dynamical system approach was used to analyse the inter-joint coordination parameters. Data were collected with six infra-red cameras and two force plates. According to the impact peak of the vertical ground reaction force, twenty habitually rearfoot-strike runners were categorised into three groups: high collision forces runners (HF group, n = 8), medium collision forces runners (MF group, n = 5), and low collision forces runners (LF group, n = 7)...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28610875/identification-and-risk-estimation-of-movement-strategies-during-cutting-maneuvers
#18
Sina David, Igor Komnik, Markus Peters, Johannes Funken, Wolfgang Potthast
OBJECTIVES: Approximately 70% of anterior cruciate ligament (ACL) injuries occur in non-contact situations during cutting and landing maneuvers. Parameters such as footstrike patterns and trunk orientation were found to influence ACL relevant knee loading, however, the relationship between the whole body movement and injury risk is debated. This study identifies whole body movement strategies that increase injury risk, and provides training recommendations to reduce this risk or enable a save return to sports after injury...
December 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28599003/measurement-agreement-between-a-newly-developed-sensing-insole-and-traditional-laboratory-based-method-for-footstrike-pattern-detection-in-runners
#19
Roy T H Cheung, Winko W An, Ivan P H Au, Janet H Zhang, Zoe Y S Chan, Alfred Man, Fannie O Y Lau, Melody K Y Lam, K K Lau, C Y Leung, N W Tsang, Louis K Y Sze, Gilbert W K Lam
This study introduced a novel but simple method to continuously measure footstrike patterns in runners using inexpensive force sensors. Two force sensing resistors were firmly affixed at the heel and second toe of both insoles to collect the time signal of foot contact. A total of 109 healthy young adults (42 males and 67 females) were recruited in this study. They ran on an instrumented treadmill at 0°, +10°, and -10° inclinations and attempted rearfoot, midfoot, and forefoot landings using real time visual biofeedback...
2017: PloS One
https://www.readbyqxmd.com/read/28481686/lower-extremity-joint-loads-in-habitual-rearfoot-and-mid-forefoot-strike-runners-with-normal-and-shortened-stride-lengths
#20
Elizabeth R Boyer, Timothy R Derrick
Our purpose was to compare joint loads between habitual rearfoot (hRF) and habitual mid/forefoot strikers (hFF), rearfoot (RFS) and mid/forefoot strike (FFS) patterns, and shorter stride lengths (SLs). Thirty-eight hRF and hFF ran at their normal SL, 5% and 10% shorter, as well as with the opposite foot strike. Three-dimensional ankle, knee, patellofemoral (PF) and hip contact forces were calculated. Nearly all contact forces decreased with a shorter SL (1.2-14.9% relative to preferred SL). In general, hRF had higher PF (hRF-RFS: 10...
May 8, 2017: Journal of Sports Sciences
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