NDLI: Insights into gait disorders: walking variability using phase plot analysis, Parkinson's disease.

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Foot kinematics and loading of professional athletes in American football-specific tasks.

The effects of treadmill or overground walking training program on gait in Parkinson's disease.

The effects of aging on the rambling and trembling components of postural sway: effects of motor and sensory challenges.

Evaluation of the accuracy of three popular regression equations for hip joint centre estimation using computerised tomography measurements for metal-on-metal hip resurfacing arthroplasty patients.

Threshold of equinus which alters biomechanical gait parameters in children.

Effects of simulated crouch gait on foot kinematics and kinetics in healthy children.

Center of pressure trajectories, trunk kinematics and trunk muscle activation during unstable sitting in low back pain patients.

Sensorimotor posture control in the blind: superior ankle proprioceptive acuity does not compensate for vision loss.

The interacting effect of cognitive and motor task demands on performance of gait, balance and cognition in young adults.

High medial plantar pressures during barefoot running are associated with increased risk of ankle inversion injury in Royal Marine recruits.

Frontal plane dynamic margins of stability in individuals with and without transtibial amputation walking on a loose rock surface.

Mass affects lower extremity muscle activity patterns in children's gait.

Intra-individual gait speed variability in healthy children aged 1-15 years.

The how and why of arm swing during human walking.

On the imitation of CP gait patterns by healthy subjects.

Insights into gait disorders: walking variability using phase plot analysis, Parkinson's disease.

Effect of light finger touch in balance control of individuals with multiple sclerosis.

Mechanical efficiency and balance in adolescents and young adults with cerebral palsy.

Time-to-contact demonstrates modulation of postural control during a dynamic lower extremity task.

Ground reaction forces during stair locomotion in pregnancy.

Age-related changes in mediolateral dynamic stability control during volitional stepping.

Excessive fluctuations in knee joint moments during early stance in sprinting are caused by digital filtering procedures.

Kinematic characteristics of the tibiofemoral joint during a step-up activity.

Kinematic and kinetic analysis during forward and backward walking.

Week-to-week differences of children's habitual activity and postural allocation as measured by the ActivPAL monitor.

Effect of muscle fatigue and physical activity level in motor control of the gait of young adults.

The effect of vision elimination during quiet stance tasks with different feet positions.

Postactivation depression changes after robotic-assisted gait training in hemiplegic stroke patients.

Altered center of mass control during sit-to-walk in elderly adults with and without history of falling.

Concussion induces gait inter-joint coordination variability under conditions of divided attention and obstacle crossing.

Gait adaptations to different paths of stair descent.

Gait characteristics of people with diabetes-related peripheral neuropathy, with and without a history of ulceration.

Balance dysfunction in hereditary and spontaneous spastic paraparesis.

Are increases in COP variability observed when participants are provided explicit verbal cues prior to COM stabilization?

Three-dimensional head and trunk movement characteristics during gait in children with spastic diplegia.

Muscle contributions to center of mass acceleration adapt to asymmetric walking in healthy subjects.

Short-term step-to-step correlation in plantar pressure distributions during treadmill walking, and implications for footprint trail analysis.

Measuring body weight distribution during sit-to-stand in patients with early knee osteoarthritis.

Minimum detectable change for knee joint contact force estimates using an EMG-driven model.

Center of pressure and the projection of the time-course of sitting skill acquisition.

Ankle dorsiflexor strength relates to the ability to restore balance during a backward support surface translation.

A novel method for the measurement of linear body segment parameters during clinical gait analysis.

The effect of moderate Parkinson's disease on compensatory backwards stepping.

Assessment of the test-retest reliability of a foot placement accuracy protocol in assisted-living older adults.

Short-term retention effect of rehabilitation using head position-based electrotactile feedback to the tongue: influence of vestibular loss and old-age.

Stiffness control of balance during dual task and prospective falls in older adults: the MOBILIZE Boston Study.

Foot loading patterns can be changed by deliberately walking with in-toeing or out-toeing gait modifications.

Mechanical energy profiles of the combined ankle-foot system in normal gait: insights for prosthetic designs.

Soleus fascicle length changes are conserved between young and old adults at their preferred walking speed.

Effect of gait speed changes on foot loading characteristics in children.

Validity of the Microsoft Kinect for providing lateral trunk lean feedback during gait retraining.

Obstacle crossing in Parkinson's disease: mediolateral sway of the centre of mass during level-ground walking and obstacle crossing.

Age differences in the control of postural stability during reaching tasks.

Pattern description and reliability parameters of six force-time related indices measured with plantar pressure measurements.

Normative values for the foot posture index between right and left foot: a descriptive study.

Dual tasking affects lateral trunk control in healthy younger and older adults.

Collision avoidance between two walkers: role-dependent strategies.

A method to investigate discrepancies between perceived and actual balance in older women.

Differences in kinetic asymmetry between injured and noninjured novice runners: a prospective cohort study.

Effects of walking speed on asymmetry and bilateral coordination of gait.

Effect of age on the ability to recover from a single unexpected underfoot perturbation during gait: kinematic responses.

Cognitive and postural precursors of motion sickness in adolescent boxers.

The effects of walking speed and prosthetic ankle adapters on upper extremity dynamics and stability-related parameters in bilateral transtibial amputee gait.

Stride length-cadence relationship is disrupted in below-knee prosthesis users.

Spatio-temporal parameters and lower-limb kinematics of turning gait in typically developing children.

Factors associated with participant compliance in studies using accelerometers.

Assessment of the effects of carbon fiber and bionic foot during overground and treadmill walking in transtibial amputees.

A comprehensive evaluation of the variation in ankle function during gait in children and youth with Charcot-Marie-Tooth disease.

Unilateral balance training enhances neuromuscular reactions to perturbations in the trained and contralateral limb.

Gradual training reduces the challenge to lateral balance control during practice and subsequent performance of a novel locomotor task.

Trunk-acceleration based assessment of gait parameters in older persons: a comparison of reliability and validity of four inverted pendulum based estimations.

Use of wand markers on the pelvis in three dimensional gait analysis.

The effects of age on stabilization of the mediolateral trajectory of the swing foot.

Influence of an eccentric load added at the back of the head on head-neck posture.

Inter-laboratory consistency of gait analysis measurements.

Functional evaluation of patients treated with osteochondral allograft transplantation for post-traumatic ankle arthritis: one year follow-up.

Postural control in quiet standing in patients with psychotic disorders.

Gait initiation impairments in both Essential Tremor and Parkinson's disease.

Effect of overground vs treadmill running on plantar pressure: influence of fatigue.

A biological walker is faster and better recognized when aligned with body axis observer.

Effect of multifocal lens glasses on the stepping patterns of novice wearers.

Biomechanics of slow running and walking with a rocker shoe.

A new method for measuring AFO deformation, tibial and footwear movement in three dimensional gait analysis.

The modulation of forward propulsion, vertical support, and center of pressure by the plantarflexors during human walking.

Reliability and minimal detectable change of gait variables in community-dwelling and hospitalized older fallers.

An alternative technical marker set for the pelvis is more repeatable than the standard pelvic marker set.

No evidence hip joint angle modulates intrinsically produced stretch reflex in human hopping.

Falls classification using tri-axial accelerometers during the five-times-sit-to-stand test.

Clinical assessment of reactive postural control among physiotherapists in Ontario, Canada.

Associations of self-report measures with gait, range of motion and proprioception in patients with lumbar spinal stenosis.

Double-leg stance and dynamic balance in individuals with functional ankle instability.

Measurement of foot placement and its variability with inertial sensors.

Muscle fatigue during repetitive voluntary contractions: a comparison between children with cerebral palsy, typically developing children and young healthy adults.

The relationship between clinical measurements and gait analysis data in children with cerebral palsy.

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Insights into gait disorders: walking variability using phase plot analysis, Parkinson's disease.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Esser, Patrick Dawes, Helen Collett, Johnny Howells, Ken
Description	Author Affiliation: Esser P ( Movement Science Group, Oxford Brookes University, Gipsy Lane Campus, Headington, Oxford OX3 0BP, UK. Electronic address: pesser@brookes.ac.uk.)
Abstract	Gait variability may have greater utility than spatio-temporal parameters and can, be an indication for risk of falling in people with Parkinson's disease (PD). Current methods rely on prolonged data collection in order to obtain large datasets which may be demanding to obtain. We set out to explore a phase plot variability analysis to differentiate typically developed adults (TDAs) from PD obtained from two 10 m walks. Fourteen people with PD and good mobility (Rivermead Mobility Index≥8) and ten aged matched TDA were recruited and walked over 10-m at self-selected walking speed. An inertial measurement unit was placed over the projected centre of mass (CoM) sampling at 100 Hz. Vertical CoM excursion was derived to determine modelled spatiotemporal data after which the phase plot analysis was applied producing a cloud of datapoints. SDA described the spread and SDB the width of the cloud with ß the angular vector of the data points. The ratio (∀) was defined as SDA: SDB. Cadence (p=.342) and stride length (p=.615) did not show a significance between TDA and PD. A difference was found for walking speed (p=.041). Furthermore a significant difference was found for ß (p=.010), SDA (p=.004) other than SDB (p=.385) or ratio ∀ (p=.830). Two sequential 10-m walks showed no difference in PD for cadence (p=.193), stride length (p=.683), walking speed (p=.684) and ß (p=.194), SDA (p=.051), SDB (p=.145) or ∀ (p=.226). The proposed phase plot analysis, performed on CoM motion could be used to reliably differentiate PD from TDA over a 10-m walk.
File Format	HTM / HTML
ISSN	09666362
Issue Number	4
Volume Number	38
e-ISSN	18792219
Journal	Gait & Posture
Language	English
Publisher	Elsevier
Publisher Date	2013-09-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Research Support, Non-u.s. Gov't Discipline Orthopedics Gait Complications Humans Middle Aged Gait Disorders, Neurologic Journal Article Parkinson Disease Case-control Studies Etiology Adult Aged Physiology Diagnosis Accelerometry Methods
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Rehabilitation Biophysics Sports Science

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