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https://www.readbyqxmd.com/read/28325673/lower-limb-dynamics-and-clinical-outcomes-for-habitually-shod-runners-who-transition-to-barefoot-running
#1
Rami Hashish, Sachithra D Samarawickrame, Susan Sigward, Stanley P Azen, George J Salem
OBJECTIVES: Recent investigations have revealed lower vertical loading rates and knee energy absorption amongst experienced barefoot runners relative to those who rear-foot strike (RFS). Although this has led to an adoption of barefoot running amongst many recreational shoe runners, recent investigations indicate that the experienced barefoot pattern is not immediately realized. Therefore, the purpose this investigation was to quantify changes in lower-extremity dynamics and clinical outcomes measures for habitually shod runners who perform a transition to barefoot running...
December 10, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28277405/the-preferred-movement-path-paradigm-influence-of-running-shoes-on-joint-movement
#2
Benno M Nigg, Jordyn Vienneau, Aimée C Smith, Matthieu B Trudeau, Maurice Mohr, Sandro R Nigg
PURPOSE: (a) to quantify differences in lower extremity joint kinematics for groups of runners subjected to different running footwear conditions, and (b) to quantify differences in lower extremity joint kinematics on an individual basis for runners subjected to different running footwear conditions. METHODS: Three-dimensional ankle and knee joint kinematics were collected for 35 heel-toe runners when wearing three different running shoes and when running barefoot...
March 8, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28222048/comparison-of-running-economy-values-while-wearing-no-shoes-minimal-shoes-and-normal-running-shoes
#3
Robbie G Cochrum, Ryan T Connors, John M Coons, Dana K Fuller, Don W Morgan, Jennifer L Caputo
Cochrum, RG, Connors, RT, Coons, JM, Fuller, DK, Morgan, DW, and Caputo, JL. Comparison of running economy values while wearing no shoes, minimal shoes, and normal running shoes. J Strength Cond Res 31(3): 595-601, 2017-The purpose of this study was to quantify differences in running economy (RE) at 50 and 70% of each subject's velocity at V[Combining Dot Above]O2max (vV[Combining Dot Above]O2max) across barefoot and 2 mass, stack height, and heel-to-toe-drop controlled footwear conditions (minimal shoes and normal running shoes) in 9 recreational distance runners (mean age 26...
March 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28157573/foot-segmental-mobility-during-subphases-of-running-comparative-study-between-two-striking-patterns
#4
Helen Peters, Kevin Deschamps, Giovanni Arnoldo Matricali, Filip Staes
OBJECTIVES: The literature lacks comparative data regarding foot segmental mobility in rearfoot (RFS) and midfoot striking (MFS) patterns. The aim of the study is to quantify the foot segmental mobility during distinct subphases of stance in presence of both striking patterns. METHODS: Twelve participants were instructed to run barefoot at a constant speed of 3.3m/s on a 10-m walkway, while adopting a RFS and a MFS pattern. Multi-segment foot mobility during the impact phase, the absorption phase and the generation phase was subsequently calculated and compared between both conditions...
January 16, 2017: Gait & Posture
https://www.readbyqxmd.com/read/27907069/16-weeks-of-progressive-barefoot-running-training-changes-impact-force-and-muscle-activation-in-habitual-shod-runners
#5
Ana Paula da Silva Azevedo, Bruno Mezêncio, Alberto Carlos Amadio, Julio Cerca Serrão
Short-term effects of barefoot and simulated barefoot running have been widely discussed in recent years. Consequences of adopting barefoot running for a long period, including as a training approach, still remain unknown. The present study evaluated the influence of 16 weeks of progressive barefoot running training on impact force and muscle activation in habitual shod runners. Six habitual shod runners (3 men and 3 women, 29.5 ± 7.3 years) were tested barefoot (BF) and shod (SH), before and after 16 weeks of progressive barefoot running training...
2016: PloS One
https://www.readbyqxmd.com/read/27888786/the-assessment-of-three-dimensional-foot-pronation-using-a-principal-component-analysis-method-in-the-stance-phase-of-running
#6
Mohammad Rabiei, Mansour Eslami, Afshin Fayyaz Movaghar
Foot pronation has not been quantified dynamically in three planes of movement in an in-vivo study. The aims of this study were to determine foot pronation through using Principal Component Analysis (PCA) method and to compare it among barefoot, shod and shod with 6° lateral wedge during the stance phase of running. In this method, three-dimension of foot movements were measured and each of these components represents a percentage of foot pronation. These components were derived based on eigenvalues and vectors of covariance matrix of primary variables...
December 2016: Foot
https://www.readbyqxmd.com/read/27865154/a-narrow-bimalleolar-width-is-a-risk-factor-for-ankle-inversion-injury-in-male-military-recruits-a-prospective-study
#7
Hannah Rice, Michael Nunns, Carol House, Joanne Fallowfield, Adrian Allsopp, Sharon Dixon
BACKGROUND: Ankle inversion injuries are one of the most common and burdensome injuries in athletic populations. Research that prospectively identifies characteristics associated with this injury is lacking. This prospective study compared baseline anthropometric and biomechanical gait characteristics of military recruits who sustained an ankle inversion injury during training, with those who remained injury-free. METHODS: Bilateral plantar pressure and three-dimensional lower limb kinematics were recorded in 1065 male, injury-free military recruits, during barefoot running...
January 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/27810691/tibial-rotation-in-running-does-rearfoot-adduction-matter
#8
Katina Mira Fischer, Steffen Willwacher, Joseph Hamill, Gert-Peter Brüggemann
OBJECTIVE: To quantify the magnitude of global rearfoot motion, in particular, rearfoot adduction and to investigate its relationship to tibial rotation. DESIGN: One hundred and four participants ran barefoot on an Ethylene Vinyl Acetate (EVA) foam. Global range of motion values for the shank, rearfoot and medial metatarsal segment as well as foot motion within the transverse plane were determined using an optoelectric motion capture system. Relationships between parameters were assessed using partial correlation analysis...
January 2017: Gait & Posture
https://www.readbyqxmd.com/read/27803620/a-comparison-of-stride-length-and-lower-extremity-kinematics-during-barefoot-and-shod-running-in-well-trained-distance-runners
#9
Peter Francis, James Ledingham, Sarah Clarke, D J Collins, Philip Jakeman
Stride length, hip, knee and ankle angles were compared during barefoot and shod running on a treadmill at two speeds. Nine well-trained (1500m time: 3min:59.80s ± 14.7 s) male (22 ±3 years; 73 ±9 kg; 1.79 ±0.4 m) middle distance (800 m - 5,000 m) runners performed 2 minutes of running at 3.05 m·s(-1) and 4.72 m·s(-1) on an treadmill. This approach allowed continuous measurement of lower extremity kinematic data and calculation of stride length. Statistical analysis using a 2X2 factorial ANOVA revealed speed to have a main effect on stride length and hip angle and footwear to have a main effect on hip angle...
September 2016: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/27801744/long-term-effects-of-habitual-barefoot-running-and-walking-a-systematic-review
#10
Karsten Hollander, Christoph Heidt, Babette C VAN DER Zwaard, Klaus-Michael Braumann, Astrid Zech
INTRODUCTION: Barefoot locomotion is widely believed to be beneficial for motor development and biomechanics but are implied to be responsible for foot pathologies and running-related injuries. Although most of available studies focused on acute effects of barefoot running and walking little is known regarding the effects of long-term barefoot versus shod locomotion. The purpose of this study was to systematically review the literature to evaluate current evidence of habitual barefoot (HB) versus habitual shod locomotion on foot anthropometrics, biomechanics, motor performance, and pathologies...
April 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27770687/the-effects-of-squatting-footwear-on-three-dimensional-lower-limb-and-spine-kinetics
#11
Daniel J Southwell, Shane A Petersen, Tyson A C Beach, Ryan B Graham
Altering footwear worn during performance of the barbell back squat has been shown to change motion patterns, but it is not completely understood how this affects biomechanical loading demands. The primary objective was to compare lower back and extremity net joint moments in 24 experienced weightlifters (12M, 12F) who performed 80% one-repetition maximum back squats under three different footwear conditions (barefoot, running shoes, weightlifting shoes). Results showed that there was a significant main effect of footwear condition on the knee extension moment (p=0...
December 2016: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/27744106/high-compared-to-low-arched-athletes-exhibit-smaller-knee-abduction-moments-in-walking-and-running
#12
Douglas W Powell, Samantha Andrews, Cris Stickley, D S Blaise Williams
High- (HA) and low-arched athletes (LA) experience distinct injury patterns. These injuries are the result of the interaction of structure and biomechanics. A suggested mechanism of patellofemoral pain pertains to frontal plane knee moments which may be exaggerated in LA athletes. We hypothesize that LA athletes will exhibit greater peak knee abduction moments than high-arched athletes. METHODS: Twenty healthy female recreational athletes (10HA and 10LA) performed five over-ground barefoot walking and five barefoot running trials at a self-selected velocity while three-dimensional kinematics and ground reaction forces were recorded...
December 2016: Human Movement Science
https://www.readbyqxmd.com/read/27626955/are-muscle-activation-patterns-altered-during-shod-and-barefoot-running-with-a-forefoot-footfall-pattern
#13
Ulysses Fernandes Ervilha, Luis Mochizuki, Aylton Figueira, Joseph Hamill
This study aimed to investigate the activation of lower limb muscles during barefoot and shod running with forefoot or rearfoot footfall patterns. Nine habitually shod runners were asked to run straight for 20 m at self-selected speed. Ground reaction forces and thigh and shank muscle surface electromyographic (EMG) were recorded. EMG outcomes (EMG intensity [iEMG], latency between muscle activation and ground reaction force, latency between muscle pairs and co-activation index between muscle pairs) were compared across condition (shod and barefoot), running cycle epochs (pre-strike, strike, propulsion) and footfall (rearfoot and forefoot) by ANOVA...
September 14, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27607302/a-new-footwear-technology-to-promote-non-heelstrike-landing-and-enhance-running-performance-fact-or-fad
#14
Janet H Zhang, Aislinn J C McPhail, Winko W An, Waqar M Naqvi, Daniel L H Chan, Ivan P H Au, Alvin T W Luk, Tony L Chen, Roy T H Cheung
This study sought to compare the kinetics and kinematics data in a group of habitual shod runners when running in traditional running shoes and newly designed minimalist shoes with lug platform. This novel footwear design claims to simulate barefoot running and reduce energy loss during impact. We compared footstrike angle (FSA), vertical average (VALR) and instantaneous (VILR) loading rates, energy loss and initial vertical stiffness between two shoe conditions. Runners demonstrated a decreased FSA while running in minimalist shoes with lug platform than traditional shoes (P = 0...
September 8, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27594919/the-effects-of-being-habitually-barefoot-on-foot-mechanics-and-motor-performance-in-children-and-adolescents-aged-6-18-years-study-protocol-for-a-multicenter-cross-sectional-study-barefoot-life-project
#15
Karsten Hollander, Babette C van der Zwaard, Johanna Elsabe de Villiers, Klaus-Michael Braumann, Ranel Venter, Astrid Zech
BACKGROUND: Barefoot locomotion has evoked an increasing scientific interest with a controversial debate about benefits and limitations of barefoot and simulated barefoot walking and running. While most current knowledge comes from cross sectional laboratory studies, the evolutionary perspective suggests the importance of investigating the long-term effects. Observing habitually barefoot populations could fill the current gap of missing high quality longitudinal studies. Therefore, the study described in this design paper aims to investigate the effects of being habitually barefoot on foot mechanics and motor performance of children and adolescents...
2016: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/27362583/primary-mechanical-factors-contributing-to-foot-eversion-moment-during-the-stance-phase-of-running
#16
Norio Tsujimoto, Hiroyuki Nunome, Yasuo Ikegami
Rearfoot external eversion moments due to ground reaction forces (GRF) during running have been suggested to contribute to overuse running injuries. This study aimed to identify primary factors inducing these rearfoot external eversion moments. Fourteen healthy men ran barefoot across a force plate embedded in the middle of 30-m runway with 3.30 ± 0.17 m · s(-1). Total rearfoot external eversion/inversion moments (Mtot) were broken down into the component Mxy due to medio-lateral GRF (Fxy) and the component Mz due to vertical GRF (Fz)...
June 30, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27362213/electromyographical-analysis-of-one-mile-run-in-barefoot-minimalist-zero-drop-and-standard-running-shoes-3847-board-286-june-4-8-00-am-9-30-am
#17
Michael Bohne
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27361839/the-acute-effect-of-exposure-to-barefoot-running-on-vo2peak-fatigue-and-time-to-exhaustion-in-recreational-runners-3270-board-335-june-3-3-30-pm-5-00-pm
#18
Matthew Miltenberger, Anton Pecha, Robert Dowden, Tyler Keshel, Shawn Munford, Emily Sauers
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27346636/initiating-running-barefoot-effects-on-muscle-activation-and-impact-accelerations-in-habitually-rearfoot-shod-runners
#19
Angel Gabriel Lucas-Cuevas, José Ignacio Priego Quesada, José Vicente Giménez, Inma Aparicio, Irene Jimenez-Perez, Pedro Pérez-Soriano
Runners tend to shift from a rearfoot to a forefoot strike pattern when running barefoot. However, it is unclear how the first attempts at running barefoot affect habitually rearfoot shod runners. Due to the inconsistency of their recently adopted barefoot technique, a number of new barefoot-related running injuries are emerging among novice barefoot runners. The aim of this study was therefore to analyse the influence of three running conditions (natural barefoot [BF], barefoot with a forced rearfoot strike [BRS], and shod [SH]) on muscle activity and impact accelerations in habitually rearfoot shod runners...
November 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/27307512/shoes-alter-the-spring-like-function-of-the-human-foot-during-running
#20
Luke A Kelly, Glen A Lichtwark, Dominic J Farris, Andrew Cresswell
The capacity to store and return energy in legs and feet that behave like springs is crucial to human running economy. Recent comparisons of shod and barefoot running have led to suggestions that modern running shoes may actually impede leg and foot-spring function by reducing the contributions from the leg and foot musculature. Here we examined the effect of running shoes on foot longitudinal arch (LA) motion and activation of the intrinsic foot muscles. Participants ran on a force-instrumented treadmill with and without running shoes...
June 2016: Journal of the Royal Society, Interface
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