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Running gait

Corina Nüesch, Jan-Arie Overberg, Hermann Schwameder, Geert Pagenstert, Annegret Mündermann
BACKGROUND: Instrumented treadmills with integrated pressure mats measure spatiotemporal, pressure and force parameters and are often used to investigate changes in gait patterns due to injury or rehabilitation. RESEARCH QUESTION: What is the within- and between-day repeatability of such an instrumented treadmill for spatiotemporal parameters, peak pressures and forces during walking and running? METHODS: Treadmill gait and running analysis were performed at 5...
March 7, 2018: Gait & Posture
Nicolas Josset, Marie Roussel, Maxime Lemieux, David Lafrance-Zoubga, Ali Rastqar, Frederic Bretzner
The mesencephalic locomotor region (MLR) has been initially identified as a supraspinal center capable of initiating and modulating locomotion. Whereas its functional contribution to locomotion has been widely documented throughout the phylogeny from the lamprey to humans, there is still debate about its exact organization. Combining kinematic and electrophysiological recordings in mouse genetics, our study reveals that glutamatergic neurons of the cuneiform nucleus initiate locomotion and induce running gaits, whereas glutamatergic and cholinergic neurons of the pedunculopontine nucleus modulate locomotor pattern and rhythm, contributing to slow-walking gaits...
March 7, 2018: Current Biology: CB
Patrizio Sale, Emanuele F Russo, Alessandra Scarton, Rocco S Calabrò, Stefano Masiero, Serena Filoni
BACKGROUND: Wearable robots are people-oriented robots designed to be worn all day, thus helping in the daily activities. They can assist in walking, running, jumping higher or even lifting objects too heavy in normal conditions. AIM: The aim of this report was thus to investigate the change in gait pattern trough 3D gait analysis subjects with Spinal Cord Injury (PwSCI) that underwent an adaptive training with a wearable Exoskeletal Device (ESD). The change in the quality of life was also investigate together with the possibility to wear these devices all day, to improve the mobility...
March 7, 2018: European Journal of Physical and Rehabilitation Medicine
Berkcan Akpinar, Eric Thorhauer, James J Irrgang, Scott Tashman, Freddie H Fu, William J Anderst
BACKGROUND: Limited in vivo kinematic information exists on managing meniscal injury during anterior cruciate ligament reconstruction (ACLR). HYPOTHESIS: Isolated anatomic ACLR restores knee kinematics, whereas ACLR in the presence of medial meniscal injury is associated with altered long-term knee kinematics. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: From March 2011 to December 2012, 49 of 57 participants in a clinical trial underwent anatomic ACLR with successful kinematic testing at 24 months after ACLR...
March 1, 2018: American Journal of Sports Medicine
Kenji Masumoto, Jared Joerger, John A Mercer
BACKGROUND: Running with body weight support (BWS) has been used for physical fitness enhancement. Nevertheless, gait mechanics of running with BWS is not fully understood. RESEARCH QUESTION: We investigated influence of stride frequency manipulation on muscle activity during running at various BWS conditions. METHODS: Nineteen participants (23.8 ± 4.1 years) ran on a lower body positive pressure treadmill at their preferred speed and preferred stride frequency (PSF) for 0%BWS, 50%BWS, and 80%BWS conditions...
February 16, 2018: Gait & Posture
Rui Zhang, Qiaoli Ji, Dianlei Han, Haijin Wan, Xiujuan Li, Gang Luo, Shuliang Xue, Songsong Ma, Mingming Yang, Jianqiao Li
In ostriches, the toes are the only body parts that contact loose sand surfaces. Thus, toe interphalangeal joint motions may play vital biomechanical roles. However, there is little research on ostrich phalangeal joint movements while walking or running on sand. The results from the three-dimensional motion track analysis system Simi Motion show that gait pattern has no significant effect on the key indicators (angles at touch-down, mid-stance, lift-off and range of motion) of the toe joint angles. The motion of the toe phalanges when walking and running on sand is basically the same...
2018: PloS One
P J Bishop, D F Graham, L P Lamas, J R Hutchinson, J Rubenson, J A Hancock, R S Wilson, S A Hocknull, R S Barrett, D G Lloyd, C J Clemente
How extinct, non-avian theropod dinosaurs moved is a subject of considerable interest and controversy. A better understanding of non-avian theropod locomotion can be achieved by better understanding terrestrial locomotor biomechanics in their modern descendants, birds. Despite much research on the subject, avian terrestrial locomotion remains little explored in regards to how kinematic and kinetic factors vary together with speed and body size. Here, terrestrial locomotion was investigated in twelve species of ground-dwelling bird, spanning a 1,780-fold range in body mass, across almost their entire speed range...
2018: PloS One
C Markus Brahms, Yang Zhao, David Gerhard, John M Barden
From a research perspective, detailed knowledge about stride length (SL) is important for coaches, clinicians and researchers because together with stride rate it determines the speed of locomotion. Moreover, individual SL vectors represent the integrated output of different biomechanical determinants and as such provide valuable insight into the control of running gait. In recent years, several studies have tried to estimate SL using body-mounted inertial measurement units (IMUs) and have reported promising results...
February 10, 2018: Journal of Biomechanics
Hyerim Lim, Sukyung Park
The dynamics of the center of mass (CoM) during walking and running at various gait conditions are well described by the mechanics of a simple passive spring loaded inverted pendulum (SLIP). Due to its simplicity, however, the current form of the SLIP model is limited at providing any further information about multi-segmental lower limbs that generate oscillatory CoM behaviors and their corresponding ground reaction forces. Considering that the dynamics of the CoM are simply achieved by mass-spring mechanics, we wondered whether any of the multi-joint motions could be demonstrated by simple mechanics...
February 8, 2018: Journal of Biomechanics
Lauren C Benson, Christian A Clermont, Sean T Osis, Dylan Kobsar, Reed Ferber
Accelerometers have been used to classify running patterns, but classification accuracy and computational load depends on signal segmentation and feature extraction. Stride-based segmentation relies on identifying gait events, a step avoided by using window-based segmentation. For each segment, discrete points can be extracted from the accelerometer signal, or advanced features can be computed. Therefore, the purpose of this study was to examine how different segmentation and feature extraction methods influence the accuracy and computational load of classifying running conditions...
February 8, 2018: Journal of Biomechanics
Emily W Harville, Wei Chen, Jack Guralnik, Lydia A Bazzano
OBJECTIVE: To examine the relationship between reproductive history, pregnancy complications, and later physical function. STUDY DESIGN: The Bogalusa Heart Study is a long-running study of cardiovascular health in a semirural community. 761 women were interviewed about their pregnancy history and complications, and underwent tests of physical function. Logistic models for dichotomous outcomes and linear models for continuous outcomes were used, adjusted for covariates...
March 2018: Maturitas
Helena Domin, Łukasz Przykaza, Ewa Kozniewska, Paweł M Boguszewski, Maria Śmiałowska
Our previous studies have shown that ACPT-I [(1S, 3R,4S)-1-aminocyclopentane-1,2,4-tricarboxylic acid], a blood-brain barrier permeable agonist of group III metabotropic glutamate (mGlu) receptors, was neuroprotective against middle cerebral artery occlusion/reperfusion (MCAO/R) in normotensive rats. Preclinical studies are typically performed on healthy animals, whereas stroke patients predominately exhibit comorbidities, such as hypertension; therefore, in the present study, we investigated the effect of ACPT-I in spontaneously hypertensive rats (SHR) after MCAO/R...
February 10, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
Shih-Chang Hsueh, Kai-Yun Chen, Jing-Huei Lai, Chung-Che Wu, Yu-Wen Yu, Yu Luo, Tsung-Hsun Hsieh, Yung-Hsiao Chiang
BACKGROUND: Parkinson's disease (PD) is typically characterized by impairment of motor function. Gait disturbances similar to those observed in patients with PD can be observed in animals after injection of neurotoxin 6-hydroxydopamine (6-OHDA) to induce unilateral nigrostriatal dopamine depletion. Exercise has been shown to be a promising non-pharmacological approach to reduce the risk of neurodegenerative disease. METHODS: In this study, we investigated the long-term effects of voluntary running wheel exercise on gait phenotypes, depression, cognitive, rotational behaviors as well as histology in a 6-OHDA-lesioned rat model of PD...
February 8, 2018: International Journal of Molecular Sciences
Bertil J Veenstra, Thomas Wyss, Lilian Roos, Simon K Delves, Mark Buller, Nadja Beeler
This study aimed to evaluate the accuracy of three measurement systems estimating gait speed during a loaded military march over graded terrain. Systems developed by the Swiss and Netherlands Armed Forces and a commercial wrist-based device were evaluated in comparison to a Global Positioning System. The first part of the paper focuses on the development of the Dutch system, where speed is estimated from a chest worn accelerometer and body measurements. For this validation study 36 subjects were walking or running 13 laps of 200 m at different speeds...
January 12, 2018: Gait & Posture
Tetsuya Ogawa, Hiroki Obata, Hikaru Yokoyama, Noritaka Kawashima, Kimitaka Nakazawa
Animal studies demonstrate that the neural mechanisms underlying locomotion are specific to the modes and/or speeds of locomotion. In line with animal results, human locomotor adaptation studies, particularly those focusing on walking, have revealed limited transfers of adaptation among movement contexts including different locomotion speeds. Running is another common gait that humans utilize in their daily lives and is distinct from walking in terms of the underlying neural mechanisms. The present study employed an adaptation paradigm on a split-belt treadmill to examine the possible independence of neural mechanisms mediating different running speeds...
February 6, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Jean-Francois Esculier, Laurent J Bouyer, Blaise Dubois, Jean Leblond, Mélanie Brisson, Luc Chau, Jean-Sébastien Roy
OBJECTIVES: To identify predictors of outcome to a rehabilitation program focused on education and management of training loads in runners with patellofemoral pain (PFP). DESIGN: Secondary analyses of a randomized clinical trial. METHODS: Fifty-eight runners with PFP (62% female, aged 31.2±6.6years, running 20.3±5.6km/week) were included in analyses. Following baseline collection of demographics, anthropometry, symptomatology, isometric strength, running mechanics and radiological data, runners were randomized to one of the three 8-week intervention program: (1) Education on symptoms management and training modifications; (2) Education+Exercise program; (3) Education+Gait retraining...
January 27, 2018: Journal of Science and Medicine in Sport
Thywill T Sabblah, Swaran Nandini, Aaron P Ledray, Julio Pasos, Jami L Conley Calderon, Rachal Love, Linda E King, Stephen J King
Charcot-Marie-Tooth disease (CMT) is a peripheral neuromuscular disorder in which axonal degeneration causes progressive loss of motor and sensory nerve function. The loss of motor nerve function leads to distal muscle weakness and atrophy, resulting in gait problems and difficulties with walking, running, and balance. A mutation in the cytoplasmic dynein heavy chain (DHC) gene was discovered to cause an autosomal dominant form of the disease designated Charcot-Marie-Tooth type 2 O disease (CMT2O) in 2011...
January 29, 2018: Scientific Reports
B T van Oeveren, C J de Ruiter, P J Beek, S M Rispens, J H van Dieën
This paper evaluates a new and adaptive real-time cadence detection algorithm (CDA) for unconstrained sensor placement during walking and running. Conventional correlation procedures, dependent on sensor position and orientation, may alternately detect either steps or strides and consequently suffer from false negatives or positives. To overcome this limitation, the CDA validates correlation peaks as strides using the Sylvester's criterion (SC). This paper compares the CDA with conventional correlation methods...
January 16, 2018: Medical Engineering & Physics
Christopher D Stickley, Melanie M Presuto, Kara N Radzak, Christina M Bourbeau, Ronald K Hetzler
CONTEXT:   Although the risk of osteoarthritis development after acute knee injury has been widely studied, the long-term consequences of knee overuse injury are not well understood. OBJECTIVE:   To identify the relationship between gait-related risk factors osteoarthritis and the development of iliotibial band syndrome (ITBS) in members of a single University Army Reserve Officers' Training Corps (ROTC) unit. DESIGN:   Prospective cohort study...
January 26, 2018: Journal of Athletic Training
Joseph J Morley, Edward Traum
The effects of restricting dorso-lumbar spine mobility on electromyographic activity of the erector spinae, quadriceps femoris, hamstrings and gastrocnemius muscles in runners was investigated. Thermoplastic casting material was fashioned into a rigid orthosis and used to restrict spinal motion during running. Volunteers ran on a treadmill at 2.78 m/sec, under normal conditions and with spinal motion restricted. Surface electromyographic data was collected during both sets of trials. Normal electromyographic data was also compared with previous authors to determine similarity with their electromyographic data...
January 2018: Journal of Bodywork and Movement Therapies
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