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https://www.readbyqxmd.com/read/29906659/validation-of-an-inertial-measurement-unit-for-the-quantification-of-rearfoot-kinematics-during-running
#1
Daniel Koska, Jasmin Gaudel, Tobias Hein, Christian Maiwald
BACKGROUND: The popular protocol used to study running motion suffers from problems that lead to a limited ability to generalize the obtained results. Inertial measurement units (IMU) appear to be promising in increasing ecological validity of the collected data. However, quantifying running kinematics utilizing IMU signals is complex and potentially affected by several well-established and less well-known errors. RESEARCH QUESTION: The purpose of this study was to examine the validity of kinematic variables obtained from a single, shoe-mounted IMU using an opto-electronic motion analysis reference system...
June 9, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29866518/acute-changes-in-foot-strike-pattern-and-cadence-affect-running-parameters-associated-with-tibial-stress-fractures
#2
Jennifer R Yong, Amy Silder, Kate L Montgomery, Michael Fredericson, Scott L Delp
Tibial stress fractures are a common and debilitating injury that occur in distance runners. Runners may be able to decrease tibial stress fracture risk by adopting a running pattern that reduces biomechanical parameters associated with a history of tibial stress fracture. The purpose of this study was to test the hypothesis that converting to a forefoot striking pattern or increasing cadence without focusing on changing foot strike type would reduce injury risk parameters in recreational runners. Running kinematics, ground reaction forces and tibial accelerations were recorded from seventeen healthy, habitual rearfoot striking runners while running in their natural running pattern and after two acute retraining conditions: (1) converting to forefoot striking without focusing on cadence and (2) increasing cadence without focusing on foot strike...
May 18, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29809093/determination-of-ankle-and-metatarsophalangeal-stiffness-during-walking-and-jogging
#3
Fabian Mager, Jim Richards, Malika Hennies, Eugen Dötzel, Ambreen Chohan, Alex Mbuli, Felix Capanni
Forefoot stiffness has been shown to influence joint biomechanics. However, little or no data exists on metatarsophalangeal stiffness. Twenty-four healthy rearfoot strike runners were recruited from a staff and student population at the University of Central Lancashire. Five repetitions of shod, self-selected speed level walking and jogging were performed. Kinetic and kinematic data were collected using retro-reflective markers placed on the lower limb and foot, to create a three-segment foot model using the Calibrated Anatomical System Technique...
May 29, 2018: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29770274/do-running-speed-and-shoe-cushioning-influence-impact-loading-and-tibial-shock-in-basketball-players
#4
Wing-Kai Lam, Jacobus Liebenberg, Jeonghyun Woo, Sang-Kyoon Park, Suk-Hoon Yoon, Roy Tsz-Hei Cheung, Jiseon Ryu
Background: Tibial stress fracture (TSF) is a common injury in basketball players. This condition has been associated with high tibial shock and impact loading, which can be affected by running speed, footwear condition, and footstrike pattern. However, these relationships were established in runners but not in basketball players, with very little research done on impact loading and speed. Hence, this study compared tibial shock, impact loading, and foot strike pattern in basketball players running at different speeds with different shoe cushioning properties/performances...
2018: PeerJ
https://www.readbyqxmd.com/read/29680311/midtarsal-locking-the-windlass-mechanism-and-running-strike-pattern-a-kinematic-and-kinetic-assessment
#5
Dustin A Bruening, Michael B Pohl, Kota Z Takahashi, Joaquin A Barrios
Changes in running strike pattern affect ankle and knee mechanics, but little is known about the influence of strike pattern on the joints distal to the ankle. The purpose of this study was to explore the effects of forefoot strike (FFS) and rearfoot strike (RFS) running patterns on foot kinematics and kinetics, from the perspectives of the midtarsal locking theory and the windlass mechanism. Per the midtarsal locking theory, we hypothesized that the ankle would be more inverted in early stance when using a FFS, resulting in decreased midtarsal joint excursions and increased dynamic stiffness...
May 17, 2018: Journal of Biomechanics
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
#6
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)...
May 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29413786/arch-index-and-running-biomechanics-in-children-aged-10-14-years
#7
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...
March 2018: Gait & Posture
https://www.readbyqxmd.com/read/29343184/foot-strike-pattern-in-preschool-children-during-running-sex-and-shod-unshod-differences
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
RANDOMIZED CONTROLLED TRIAL
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...
November 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28822329/changes-in-gluteal-muscle-forces-with-alteration-of-footstrike-pattern-during-running
#17
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
#18
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
#19
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
#20
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
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