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https://www.readbyqxmd.com/read/29625412/which-is-the-best-predictor-of-excessive-hip-internal-rotation-in-women-with-patellofemoral-pain-rearfoot-eversion-or-hip-muscle-strength-exploring-subgroups
#1
Amanda Schenatto Ferreira, Danilo de Oliveira Silva, Ronaldo Valdir Briani, Deisi Ferrari, Fernando Amâncio Aragão, Marcella Ferraz Pazzinatto, Fábio Mícolis de Azevedo
BACKGROUND: Patellofemoral pain (PFP) has been linked to increased patellofemoral joint stress as a result of excessive hip internal rotation. Lower hip strength and/or excessive rearfoot eversion have been used to explain such altered movement pattern; however, it is unknown which one is the best predictor of excessive hip internal rotation. RESEARCH QUESTION: To investigate if peak rearfoot eversion and/or peak concentric hip abductor strength can predict peak hip internal rotation during stair ascent in women with PFP...
March 26, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29573984/electromyographic-analysis-of-balance-exercises-in-single-leg-stance-using-different-instability-modalities-of-the-forefoot-and-rearfoot
#2
Martin Alfuth, Markus Gomoll
PURPOSE: To investigate the activity of lower extremity muscles in response to single-leg stance on a training device, destabilizing the forefoot while the rearfoot stands on a fixed plate and vice versa compared with a balance pad and the floor. DESIGN: Cross-sectional study. SETTING: University's laboratory. PARTICIPANTS: Twenty-seven healthy adults. METHODS: Surface electromyography and 2D video analysis were used to record the activity of lower extremity muscles and to control sagittal knee joint angle during single-leg stance trials under one stable control condition and five unstable conditions...
March 21, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29547030/changes-in-kinematic-coupling-among-the-rearfoot-midfoot-and-forefoot-segments-during-running-and-walking
#3
Tomoya Takabayashi, Mutsuaki Edama, Erika Yokoyama, Chiaki Kanaya, Takuma Inai, Yuta Tokunaga, Masayoshi Kubo
BACKGROUND: Understanding the concept of kinematic coupling is essential when selecting the appropriate therapeutic strategy and grasping mechanisms for the occurrence of injuries. A previous study reported that kinematic coupling between the rearfoot and shank during running and walking were different. However, because foot mobility involves not only the rearfoot but also the midfoot or forefoot, kinematic coupling is likely to occur among the rearfoot, midfoot, and forefoot segments...
January 2018: Journal of the American Podiatric Medical Association
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
#4
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/29500941/gait-assessment-of-the-expectant-mothers-systematic-review
#5
REVIEW
Wanda Forczek, Yury P Ivanenko, Joanna Bielatowicz, Karolina Wacławik
INTRODUCTION: Since pregnant women may have potentially greater difficulty maintaining balance, their stability has been investigated by some researchers. However, there is no consensus considering the results. The purpose of our investigation was to compare all the experimental studies focusing on the analysis of gait that have been conducted over the last years to assess their methodological issues and changes induced by pregnancy. METHODS: The PRISMA Guidelines incorporating a risk of bias and strength of recommendations were used as a methodological template for this review...
February 23, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29485360/center-of-pressure-and-perceived-stability-in-basketball-shoes-with-soft-and-hard-midsoles
#6
Hin Fong Leong, Wing Kai Lam, Wei Xuan Ng, Pui Wah Kong
This study aimed to investigate the effects of varying midsole hardness on center of pressure (COP) and perceived stability during basketball-specific tasks, as well as the correlation between COP and perception measurements. Twenty male basketball players performed 45° cutting and lay-up while wearing basketball shoes with soft and hard midsoles. COP trajectories were obtained from the Pedar insole system. Stability perceptions at the forefoot and rearfoot were assessed using 150-mm visual analogue scales (VAS)...
February 27, 2018: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29475152/relationship-between-rearfoot-tibia-and-femur-kinematics-in-runners-with-and-without-patellofemoral-pain
#7
Bruna Calazans Luz, Ana Flávia Dos Santos, Mariana Carvalho de Souza, Tatiana de Oliveira Sato, Deborah A Nawoczenski, Fábio Viadanna Serrão
BACKGROUND: Patellofemoral pain (PFP) is the most common running overuse injury. Excessive rearfoot eversion is commonly considered as a PFP risk factor and the relationship between ankle-foot complex movement and lower limb may be involved with this dysfunction. The purpose of this study was to evaluate the correlation between rearfoot eversion with tibia and femur kinematics in frontal and transverse planes during running in individuals with and without PFP. The secondary purpose was to compare the lower limb kinematics between runners with and without PFP...
March 2018: Gait & Posture
https://www.readbyqxmd.com/read/29413796/varus-thrust-visualized-during-gait-was-associated-with-inverted-foot-in-patients-with-knee-osteoarthritis-an-exploratory-study
#8
Hiroshi Ohi, Hirotaka Iijima, Naoto Fukutani, Tomoki Aoyama, Eishi Kaneda, Kazuko Ohi, Hiromu Ito, Shuichi Matsuda, Abe Kaoru
The foot is speculated to play a role in knee joint kinematics. This exploratory cross-sectional study examined the association between static foot posture and the presence of varus thrust visualized during gait in patients with medial knee osteoarthritis (OA). Patients (n = 88 patients and 134 knees; age, 61-91 years; 68.2% female) with Kellgren/Lawrence (K/L) grade ≥1 in the medial compartment were included in this study and underwent gait observation for varus thrust. These patients' three-dimensional static foot posture while standing was evaluated and their tibiofemoral joint K/L grades and anatomical axis angles were also assessed as covariates...
January 29, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29413786/arch-index-and-running-biomechanics-in-children-aged-10-14-years
#9
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
#10
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/29299095/a-pictorial-review-of-reconstructive-foot-and-ankle-surgery-evaluation-and-intervention-of-the-flatfoot-deformity
#11
REVIEW
Andrew J Meyr, Laura E Sansosti, Sayed Ali
This pictorial review focuses on basic procedures performed within the field of podiatric surgery, specifically for elective reconstruction of the midfoot and rearfoot with focus on the flatfoot deformity. Our goal is to demonstrate objective radiographic parameters that surgeons utilize to initially define the deformity, lead to procedure selection, and judge post-operative outcomes. We hope that radiologists will employ this information to improve their assessment of post-operative radiographs following reconstructive foot surgeries...
June 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29284575/does-weight-reduction-affect-foot-structure-and-the-strength-of-the-muscles-that-move-the-ankle-in-obese-japanese-adults
#12
Xiaoguang Zhao, Takehiko Tsujimoto, Bokun Kim, Yasutomi Katayama, Kazuyuki Ogiso, Mutsumi Takenaka, Kiyoji Tanaka
Obesity is considered a major influential factor of foot structure and function. It has been reported to result in detrimental alterations of foot structure indicators and a decrease in muscle strength, which can lower the quality of life and increase the morbidity of obesity. The purpose of the present study was to determine the effect of weight reduction on foot structure and the strength of the muscles that move the ankle in obese adults. A total of 33 obese Japanese participants (mean body mass index 28...
March 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29234565/reliability-of-ankle-foot-morphology-mobility-strength-and-motor-performance-measures
#13
John J Fraser, Rachel M Koldenhoven, Susan A Saliba, Jay Hertel
Background: Assessment of foot posture, morphology, intersegmental mobility, strength and motor control of the ankle-foot complex are commonly used clinically, but measurement properties of many assessments are unclear. Purpose: To determine test-retest and inter-rater reliability, standard error of measurement, and minimal detectable change of morphology, joint excursion and play, strength, and motor control of the ankle-foot complex. Design: Reliability study...
December 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29213246/the-influence-of-footwear-on-the-modular-organization-of-running
#14
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/29168597/reliability-and-clinical-features-associated-with-the-ipsg-mri-tibiotalar-and-subtalar-joint-scores-in-children-adolescents-and-young-adults-with-haemophilia
#15
T Brunel, S Lobet, K Deschamps, C Hermans, K Peerlinck, J Vandesande, J-B Pialat
OBJECTIVES: To assess the reliability of the IPSG MRI scale for tibiotalar (TTJ) and subtalar joint (STJ) changes in young haemophilic patients, correlating MRI findings with functional scores and 3D-rearfoot kinematics. METHODS: A total of 37 haemophilic patients underwent bilateral MRI of the footankle, clinical evaluation and quantitative assessment of their 3D-rearfoot kinematics during walking. TTJ and STJ soft tissues were assessed twice along with osteochondral changes by two radiologists using the IPSG MRI scale...
January 2018: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29145687/foot-strike-patterns-differ-between-children-and-adolescents-growing-up-barefoot-vs-shod
#16
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/29141879/lower-limb-biomechanical-analysis-during-an-unanticipated-step-on-a-bump-reveals-specific-adaptations-of-walking-on-uneven-terrains
#17
Fausto A Panizzolo, Sangjun Lee, Taira Miyatake, Denise Martineli Rossi, Christopher Siviy, Jozefien Speeckaert, Ignacio Galiana, Conor J Walsh
Although it is clear that walking over different irregular terrain is associated with altered biomechanics, there is little understanding of how we quickly adapt to unexpected variations in terrain. This study aims to investigate which adaptive strategies humans adopt when performing an unanticipated step on an irregular surface, specifically a small bump. Nine healthy male participants walked at their preferred walking speed along a straight walkway during five conditions: four involving unanticipated bumps of two different heights, and one level walking condition...
November 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29141022/trabecular-bone-in-the-calcaneus-of-runners
#18
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/29140160/clinical-measures-and-their-contribution-to-dysfunction-in-individuals-with-patellar-tendinopathy
#19
Hyunjae Jeon, Melanie L McGrath, Neal Grandgenett, Adam B Rosen
CONTEXT: Patellar tendinopathy is prevalent in physically active populations and it affects their quality of living, performance of activity, and may contribute to the early cessation of their athletic careers. A number of previous studies have identified contributing factors for patellar tendinopathy however their contributions to self-reported dysfunction remain unclear. OBJECTIVE: The purpose of this investigation was to determine if strength, flexibility, and various lower extremity static alignments contributed to self-reported function and influence the severity of patellar tendinopathy...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29100250/gait-retraining-from-rearfoot-strike-to-forefoot-strike-does-not-change-running-economy
#20
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
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