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https://www.readbyqxmd.com/read/29304509/effect-of-foot-progression-angle-adjustment-on-the-knee-adduction-moment-and-knee-joint-contact-force-in-runners-with-and-without-knee-osteoarthritis
#1
I C D Fong, W S C Li, W K J Tai, T W R Tsang, J H Zhang, T L W Chen, H Baur, P Eichelberger, R T H Cheung
BACKGROUND: Knee adduction moment (KAM) is often used as a surrogate marker of knee contact force (KCF) during walking. Previous studies have reported potential benefits to reduce KAM in patients with knee osteoarthritis (OA) by foot progression angle adjustment. However, KAM is an external moment and it does not consider any muscle contribution to the joint loading, which should pose a greater influence in running than walking. RESEARCH QUESTION: This study used a computational model to compare KAM and KCF between runners with and without knee OA during running...
December 30, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29303986/the-effect-of-the-accelerometer-operating-range-on-biomechanical-parameters-stride-length-velocity-and-peak-tibial-acceleration-during-running
#2
Christian Mitschke, Pierre Kiesewetter, Thomas L Milani
Previous studies have used accelerometers with various operating ranges (ORs) when measuring biomechanical parameters. However, it is still unclear whether ORs influence the accuracy of running parameters, and whether the different stiffnesses of footwear midsoles influence this accuracy. The purpose of the present study was to systematically investigate the influence of OR on the accuracy of stride length, running velocity, and on peak tibial acceleration. Twenty-one recreational heel strike runners ran on a 15-m indoor track at self-selected running speeds in three footwear conditions (low to high midsole stiffness)...
January 5, 2018: Sensors
https://www.readbyqxmd.com/read/29287151/effects-of-stacked-wedge-pads-and-chains-applied-to-the-forefeet-of-tennessee-walking-horses-for-a-five-day-period-on-behavioral-and-biochemical-indicators-of-pain-stress-and-inflammation
#3
James B Everett, Jim Schumacher, Thomas J Doherty, Randi A Black, Lisa L Amelse, Peter Krawzel, Johann F Coetzee, Brian K Whitlock
OBJECTIVE To determine the effects of stacked wedge pads and chains applied to the forefeet of Tennessee Walking Horses on behavioral and biochemical indicators of pain, stress, and inflamation. ANIMALS 20 Tennessee Walking Horses. PROCEDURES Horses were randomly assigned to 2 treatment groups: keg shoes (control; n = 10) or stacked wedge pads and exercise with chains (10). Ten days before treatment application, an accelerometer was attached at the left metatarsus of each horse to record daily activity. Horses were exercised for 20 minutes daily, beginning on day -7...
January 2018: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/29249085/correction-to-a-comparison-of-the-energetic-cost-of-running-in-marathon-racing-shoes
#4
Wouter Hoogkamer, Shalaya Kipp, Jesse H Frank, Emily M Farina, Geng Luo, Rodger Kram
An Online First version of this article was made available online at https://link.springer.com/article/10.1007/s40279-017-0811-2 on 16 November 2017. An error was subsequently identified in the article, and the following correction should be noted.
December 16, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29239782/the-morphology-of-foot-soft-tissues-is-associated-with-running-shoe-type-in-healthy-recreational-runners
#5
Xianyi Zhang, Tijs Delabastita, Joselien Lissens, Floor De Beenhouwer, Benedicte Vanwanseele
OBJECTIVES: To determine the differences in the morphology of foot soft tissues between runners using different types of running shoes. DESIGN: Cross-sectional study. METHODS: Thirty-eight recreational runners were divided into four groups based on running shoe type, namely, neutral shoes, motion control shoes, minimalistic shoes and neutral shoes with custom-made insoles. An arch height index and a relative arch deformation index were calculated for each participant...
November 22, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29238158/full-step-cycle-kinematic-and-kinetic-comparison-of-barefoot-walking-and-a-traditional-shoe-walking-in-healthy-youth-insights-for-barefoot-technology
#6
Yi Xu, Qinghua Hou, Chuhuai Wang, Andrew J Sellers, Travis Simpson, Bradford C Bennett, Shawn D Russell
Objective: Barefoot technology shoes are becoming increasingly popular, yet modifications are still needed. The present study aims to gain valuable insights by comparing barefoot walking to neutral shoe walking in a healthy youth population. Methods: 28 healthy university students (22 females and 6 males) were recruited to walk on a 10-meter walkway both barefoot and in neutral running shoes at their comfortable walking speed. Full step cycle kinematic and kinetic data were collected using an 8-camera motion capture system...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29214168/how-well-can-modern-nonhabitual-barefoot-youth-adapt-to-barefoot-and-minimalist-barefoot-technology-shoe-walking-in-regard-to-gait-symmetry
#7
Y Xu, Q Hou, C Wang, T Simpson, B Bennett, S Russell
We aim to test how well modern nonhabitual barefoot people can adapt to barefoot and Minimalist Bare Foot Technology (MBFT) shoes, in regard to gait symmetry. 28 healthy university students (22 females/6 males) were recruited to walk on a 10-meter walkway randomly on barefoot, in MBFT shoes, and in neutral running shoes at their comfortable walking speed. Kinetic and kinematic data were collected using an 8-camera motion capture system. Data of joint angles, joint forces, and joint moments were extracted to compute a consecutive symmetry index...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29213246/the-influence-of-footwear-on-the-modular-organization-of-running
#8
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/29189099/creative-prosthetic-foot-selection-enables-successful-ambulation-in-stiletto-high-heels
#9
Elizabeth Russell Esposito, Delbert H Lipe, Christopher A Rábago
BACKGROUND: Walking in high heels presents biomechanical challenges, yet they remain part of many women's attire. However, women with a lower limb amputation are limited in available footwear options. Case description and methods: This case study is in response to one patient's assertion that she walked better and more symmetrically in heels than flat shoes with her below-knee prosthesis. She underwent gait analysis in athletic shoes and 10-cm stiletto high heels worn with a pediatric running foot to determine if these claims could be substantiated through biomechanical measures...
November 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29181248/effect-of-heel-lifts-on-patellofemoral-joint-stress-during-running
#10
Zachary Mestelle, Thomas Kernozek, Kelly S Adkins, Jessica Miller, Naghmeh Gheidi
Background: Patellofemoral pain is a debilitating injury for many recreational runners. Excessive patellofemoral joint stress may be the underlying source of pain and interventions often focus on ways to reduce patellofemoral joint stress. Purpose: Heel lifts have been used as an intervention within Achilles tendon rehabilitation programs and to address leg length discrepancies. The purpose of this study was to examine the effect of running with heel lifts on patellofemoral joint stress, patellofemoral stress impulse, quadriceps force, step length, cadence, and other related kinematic and spatiotemporal variables...
October 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29145687/foot-strike-patterns-differ-between-children-and-adolescents-growing-up-barefoot-vs-shod
#11
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...
November 16, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29145504/quantifying-performance-on-an-outdoor-agility-drill-using-foot-mounted-inertial-measurement-units
#12
Antonia M Zaferiou, Lauro Ojeda, Stephen M Cain, Rachel V Vitali, Steven P Davidson, Leia Stirling, Noel C Perkins
Running agility is required for many sports and other physical tasks that demand rapid changes in body direction. Quantifying agility skill remains a challenge because measuring rapid changes of direction and quantifying agility skill from those measurements are difficult to do in ways that replicate real task/game play situations. The objectives of this study were to define and to measure agility performance for a (five-cone) agility drill used within a military obstacle course using data harvested from two foot-mounted inertial measurement units (IMUs)...
2017: PloS One
https://www.readbyqxmd.com/read/29143929/a-comparison-of-the-energetic-cost-of-running-in-marathon-racing-shoes
#13
Wouter Hoogkamer, Shalaya Kipp, Jesse H Frank, Emily M Farina, Geng Luo, Rodger Kram
BACKGROUND: Reducing the energetic cost of running seems the most feasible path to a sub-2-hour marathon. Footwear mass, cushioning, and bending stiffness each affect the energetic cost of running. Recently, prototype running shoes were developed that combine a new highly compliant and resilient midsole material with a stiff embedded plate. OBJECTIVE: The aim of this study was to determine if, and to what extent, these newly developed running shoes reduce the energetic cost of running compared with established marathon racing shoes...
November 16, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29126041/the-effect-of-eliminating-leg-length-difference-on-plantar-foot-pressure-distribution-in-patients-wearing-forefoot-offloading-shoe
#14
Ezequiel Palmanovich, Moshe Ayalon, David Ben Sira, Meir Nyska, Iftach Hetsroni
BACKGROUND AND PURPOSE: Elevated heel construction offloads the forefoot after surgery. However, side-to-side height difference alters limb kinetics, whereas leg-length equalizing-sole at non-operated side may have beneficial effects on foot loading. The purpose of this study was to characterize leg-length equalizing sole effect on bilateral plantar pressures when using heel-lift forefoot-offloading shoe. MATERIALS AND METHODS: Twenty men were tested walking. Plantar peak pressures (PP) and pressure-time integrals (PTI) in the forefoot-offloading shoe and in contralateral running shoe were compared between two conditions: one with- and the other without leg-length equalizing sole elevation at the running shoe...
October 24, 2017: Foot
https://www.readbyqxmd.com/read/29065279/gait-retraining-for-the-reduction-of-injury-occurrence-in-novice-distance-runners-1-year-follow-up-of-a-randomized-controlled-trial
#15
Zoe Y S Chan, Janet H Zhang, Ivan P H Au, Winko W An, Gary L K Shum, Gabriel Y F Ng, Roy T H Cheung
BACKGROUND: The increasing popularity of distance running has been accompanied by an increase in running-related injuries, such that up to 85% of novice runners incur an injury in a given year. Previous studies have used a gait retraining program to successfully lower impact loading, which has been associated with many running ailments. However, softer footfalls may not necessarily prevent running injury. PURPOSE: To examine vertical loading rates before and after a gait retraining program and assess the effectiveness of the program in reducing the occurrence of running-related injury across a 12-month observation period...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29060668/one-size-fits-all-electronics-for-insole-based-activity-monitoring
#16
Nagaraj Hegde, Matthew Bries, Edward Melanson, Edward Sazonov
Footwear based wearable sensors are becoming prominent in many areas of monitoring health and wellness, such as gait and activity monitoring. In our previous research we introduced an insole based wearable system SmartStep, which is completely integrated in a socially acceptable package. From a manufacturing perspective, SmartStep's electronics had to be custom made for each shoe size, greatly complicating the manufacturing process. In this work we explore the possibility of making a universal electronics platform for SmartStep - SmartStep 3...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29059831/real-time-gait-analysis-with-accelerometer-based-smart-shoes
#17
R Delgado-Gonzalo, J Hubbard, Ph Renevey, A Lemkaddem, Q Vellinga, D Ashby, J Willardson, M Bertschi
In this paper, we present the evaluation of a new smart shoe capable of performing gait analysis in real time. The system is exclusively based on accelerometers which minimizes the power consumption. The estimated parameters are activity class (rest/walk/run), step cadence, ground contact time, foot impact (zone, strength, and balance), forward distance, and speed. The different parameters have been validated with a customized database of 26 subjects on a treadmill and video data labeled manually. Key measures for running analysis such as the cadence is retrieved with a maximum error of 2%, and the ground contact time with an average error of 3...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29054746/the-influence-of-cadence-and-shoes-on-patellofemoral-joint-kinetics-in-runners-with-patellofemoral-pain
#18
Jason Bonacci, Michelle Hall, Aaron Fox, Natalie Saunders, Tristan Shipsides, Bill Vicenzino
OBJECTIVES: To determine the effect of a combination of a minimalist shoe and increased cadence on measures of patellofemoral joint loading during running in individuals with patellofemoral pain. DESIGN: Within-participant repeated measures with four conditions presented in random order: (1) control shoe at preferred cadence; (2) control shoe with +10% cadence; (3) minimalist shoe at preferred cadence; (4) minimalist shoe with +10% cadence. METHODS: Fifteen recreational runners with patellofemoral pain ran on an instrumented treadmill while three-dimensional motion capture data were acquired...
October 6, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28994758/using-gold-standard-gait-analysis-methods-to-assess-experience-effects-on-lower-limb-mechanics-during-moderate-high-heeled-jogging-and-running
#19
Yan Zhang, Meizi Wang, Jan Awrejcewicz, Gusztáv Fekete, Feng Ren, Yaodong Gu
A limited number of studies have explored lower-limb biomechanics during high-heeled jogging and running, and most studies have failed to clarify the wearing experience of subjects. This protocol describes the differences in lower-limb kinematics and ground reaction force (GRF) between experienced wearers (EW) and inexperienced wearers (IEW) during moderate high-heeled jogging and running. A three-dimensional (3D) motion analysis system with a configured force platform was used to synchronously capture lower-limb joint movements and GRF...
September 14, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28979586/percutaneous-first-metatarsophalangeal-joint-fusion
#20
Thomas Bauer
The first metatarsophalangeal (MTP1) joint fusion is a very useful procedure in forefoot surgery and is still the gold standard for the treatment of severe and painful hallux rigidus. Normal walking and running are possible after MTP1 fusion, the first ray mobility being essentially in the interphalangeal (IP) joint with a compensatory hypermobility in dorsal flexion. Percutaneous MTP1 fusion is a simple procedure providing comparable results to fusions performed with open techniques. Postoperative cares are simplified with an immediate full weight bearing on rigid flat shoes and quick return to normal walking...
2017: Open Orthopaedics Journal
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