keyword
MENU ▼
Read by QxMD icon Read
search

Movement variability

keyword
https://www.readbyqxmd.com/read/28430108/a-network-physiology-approach-to-the-assessment-of-the-link-between-sinoatrial-and-ventricular-cardiac-controls
#1
Alberto Porta, Vlasta Bari, Beatrice De Maria, Mathias Baumert
A network physiology approach to evaluate the strength of the directed interactions among cardiac controls at sinoatrial and ventricular levels and respiration (R) is proposed. The network is composed of three nodes (i.e. sinoatrial and ventricular cardiac controls and R) and their activity is exemplified by the variability of heart period (HP), the variability of the duration of the electrical activity of the heart approximated as the temporal distance between Q-wave onset and T-wave end or apex (i.e. QTe or QTa) and thoracic movements respectively...
April 21, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28430076/on-using-distributional-analysis-techniques-for-determining-the-onset-of-the-influence-of-experimental-variables
#2
Eyal M Reingold, Heather Sheridan
Much of the investigation of eye-movement control in visual cognition has focused on the influence of experimental variables on mean fixation durations. In the present paper we explored the convergence between two distributional analysis techniques that were recently introduced in this domain. First, Staub, White, Drieghe, Hollway and Rayner, (2010) proposed fitting the ex-Gaussian distribution to individual participants' data in order to ascertain whether a variable has a rapid or a slow influence on fixation durations...
April 21, 2017: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/28426514/comparison-of-the-hang-high-pull-and-loaded-jump-squat-for-the-development-of-vertical-jump-and-isometric-force-time-characteristics
#3
Dustin J Oranchuk, Tracey L Robinson, Zachary J Switaj, Eric J Drinkwater
Weightlifting movements have high skill demands and require expert coaching. Loaded jumps have a comparably lower skill demand, but may be similarly effective for improving explosive performance. The purpose of this study was to compare vertical jump performance, isometric force, and rate of force development (RFD) following a ten-week intervention employing the hang high-pull (hang-pull) or trap-bar jump squat (jump-squat). Eighteen NCAA Division II swimmers (8 males, 10 females) with at least one year of resistance training experience volunteered to participate...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28425489/meis1-variant-as-a-determinant-of-autonomic-imbalance-in-restless-legs-syndrome
#4
Jérôme Thireau, Charlotte Farah, Nicolas Molinari, Fabrice Bouilloux, Lucas Torreilles, Juliane Winkelmann, Sabine Scholz, Sylvain Richard, Yves Dauvilliers, Frédéric Marmigère
Restless Legs Syndrome (RLS) is a genetically complex neurological disorder in which overlapping genetic risk factors may contribute to the diversity and heterogeneity of the symptoms. The main goal of the study was to investigate, through analysis of heart rate variability (HRV), whether in RLS patients the MEIS1 polymorphism at risk influences the sympathovagal regulation in different sleep stages. Sixty-four RLS patients with periodic leg movement index above 15 per hour, and 38 controls underwent one night of video-polysomnographic recording...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28425221/conceptualizing-movement-by-expert-bobath-instructors-in-neurological-rehabilitation
#5
Julie Vaughan-Graham, Kara Patterson, Karl Zabjek, Cheryl A Cott
RATIONALE, AIMS, AND OBJECTIVES: Movement, a core aspect of physiotherapy practice, and integral to the clinical reasoning process has undergone limited theoretical development. Instead, research has focused on intervention effectiveness embedded within the positivist paradigm. The purpose of this study was to explore how expert neurorehabilitation therapists conceptualize movement as part of their clinical reasoning. METHOD: A qualitative interpretive descriptive approach consisting of stimulated recall using video-recorded treatment sessions and in-depth interviews was used...
April 20, 2017: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/28420999/functional-high-intensity-circuit-training-improves-body-composition-peak-oxygen-uptake-strength-and-alters-certain-dimensions-of-quality-of-life-in-overweight-women
#6
Billy Sperlich, Birgit Wallmann-Sperlich, Christoph Zinner, Valerie Von Stauffenberg, Helena Losert, Hans-Christer Holmberg
The effects of circuit-like functional high-intensity training (CircuitHIIT) alone or in combination with high-volume low-intensity exercise (Circuitcombined) on selected cardio-respiratory and metabolic parameters, body composition, functional strength and the quality of life of overweight women were compared. In this single-center, two-armed randomized, controlled study, overweight women performed 9-weeks (3 sessions·wk(-1)) of either CircuitHIIT (n = 11), or Circuitcombined (n = 8). Peak oxygen uptake and perception of physical pain were increased to a greater extent (p < 0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28419796/-third-working-conditions-and-health-survey-in-navarre-spain-main-findings
#7
Vega García
OBJECTIVE: To describe health problems and working conditions perceived by workers of Navarra, Spain. METHODS: Conduct of the Third Survey of Working Conditions and Health in Navarre. We administered the Seventh Spanish National Survey of Working Conditions questionnaire by personal interviews conducted in the workers' homes between October 2014 and December 2014, and using a three-stage stratified sampling approach, by economic activity, work establishment size and gender...
April 2017: Archivos de Prevención de Riesgos Laborales
https://www.readbyqxmd.com/read/28416669/coding-of-navigational-affordances-in-the-human-visual-system
#8
Michael F Bonner, Russell A Epstein
A central component of spatial navigation is determining where one can and cannot go in the immediate environment. We used fMRI to test the hypothesis that the human visual system solves this problem by automatically identifying the navigational affordances of the local scene. Multivoxel pattern analyses showed that a scene-selective region of dorsal occipitoparietal cortex, known as the occipital place area, represents pathways for movement in scenes in a manner that is tolerant to variability in other visual features...
April 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28416352/setting-them-up-for-lifetime-activity-play-competence-perceptions-and-physical-activity-in-young-children
#9
Lisa M Barnett, Nicola D Ridgers, Kylie Hesketh, Jo Salmon
OBJECTIVES: Possessing positive physical perceived competence is important for physical activity in older children. Young children are primarily physically active through play-based behaviour rather than through organised sports and activities, so understanding how play perceptions might influence physical activity behaviour is important. The study purpose was to assess if perceived active play competence is associated with young children's physical activity. DESIGN: Cross sectional study...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28414874/in-vitro-evaluation-of-the-influence-of-velocity-on-sliding-resistance-of-stainless-steel-arch-wires-in-a-self-ligating-orthodontic-bracket
#10
F Savoldi, L Visconti, D Dalessandri, S Bonetti, J K H Tsoi, J P Matinlinna, C Paganelli
INTRODUCTION: Of the variables used by in vitro studies of resistance to sliding (RS) in orthodontics, sliding velocity (SV) of the wire is often the one farthest from its clinical counterpart. We investigated whether velocity influences the RS at values approximating the orthodontic movement. METHODS: A SS self-ligating bracket with a NiTi clip was fixed onto a custom-made model. Different shaped orthodontic SS wires of four sizes and two types (round, 0.020″ and 0...
May 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28412986/effects-of-subacute-ingestion-of-chlorogenic-acids-on-sleep-architecture-and-energy-metabolism-through-activity-of-the-autonomic-nervous-system-a-randomised-placebo-controlled-double-blinded-cross-over-trial
#11
Insung Park, Ryuji Ochiai, Hitomi Ogata, Momoko Kayaba, Sayaka Hari, Masanobu Hibi, Yoshihisa Katsuragi, Makoto Satoh, Kumpei Tokuyama
Chlorogenic acids (CGA) are the most abundant polyphenols in coffee. Continuous consumption of CGA reduces body fat and body weight. Since energy metabolism and sleep are controlled by common regulatory factors, consumption of CGA might modulate sleep. Lack of sleep has been identified as a risk factor for obesity, hypertension and type 2 diabetes. The aim of this study was to determine the effects of ingesting CGA over 5 d on energy metabolism and sleep quality in humans. A total of nine healthy subjects (four male and five female) completed a placebo-controlled, double-blinded, cross-over intervention study...
April 17, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28412603/impairments-of-balance-stepping-reactions-and-gait-in-people-with-cervical-dystonia
#12
Christopher Barr, Rhiannon Barnard, Lauren Edwards, Sheila Lennon, Lynley Bradnam
BACKGROUND: Impaired balance is common in neurological disorders. Cervical dystonia is a neurological movement disorder affecting the neck. The effect of this aberrant head posture on physical function is unknown. OBJECTIVES: To compare balance, mobility, gait and stepping reactions between ten people with cervical dystonia and ten control adults. METHODS: Spatiotemporal gait parameters and walking speed were assessed using a computerised walkway...
April 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28411417/heart-rate-variability-and-cordance-in-rapid-eye-movement-sleep-as-biomarkers-of-depression-and-treatment-response
#13
Marcel A Pawlowski, Mary Gazea, Bastian Wollweber, Martin Dresler, Florian Holsboer, Martin E Keck, Axel Steiger, Marek Adamczyk, Thorsten Mikoteit
OBJECTIVES: The relevance of rapid eye movement (REM) sleep in affective disorders originates from its well-known abnormalities in depressed patients, who display disinhibition of REM sleep reflected by increased frequency of rapid eye movements (REM density). In this study we examined whether heart rate variability (HRV) and prefrontal theta cordance, both derived from REM sleep, could represent biomarkers of antidepressant treatment response. METHODS: In an open-label, case-control design, thirty-three in-patients (21 females) with a depressive episode were treated with various antidepressants for four weeks...
April 2, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28410886/the-autogenous-graft-versus-transport-distraction-osteogenesis-for-reconstruction-of-the-ramus-condyle-unit-a-prospective-comparative-study
#14
S Kohli, S Mohanty, S Singh, Sandeep, J Dabas, R Patel
This study aimed to compare the joint function and morphology achieved following condylar reconstruction using sternoclavicular grafts (SCG) versus transport distraction osteogenesis (TDO) in temporomandibular joint (TMJ) ankylosis patients. Twenty-two patients with TMJ ankylosis underwent TMJ reconstruction with SCG or TDO (n=11 each). Radiographic and clinical evaluations were performed at 1 week and at 1, 3, and 6 months post-surgery. Clinical criteria examined included the duration of surgery, mean postoperative mouth opening, excursive jaw movements, and pain scores...
April 11, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28410805/startle-responses-in-functional-jerky-movement-disorders-are-increased-but-have-a-normal-pattern
#15
Y E M Dreissen, T Boeree, J H T M Koelman, M A J Tijssen
BACKGROUND: Exaggerated startle reactions have been frequently described in patients with functional movement disorders (FMD). Long onset latencies and inconsistent recruitment pattern are thought to be a hallmark in these patients. The auditory startle reflex has not been systematically assessed though. OBJECTIVES: Assessing the frequency and pattern of the early and late component of the auditory startle response in patients with functional jerky movement disorders...
April 6, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28410738/soft-tissue-artefacts-of-skin-markers-on-the-lower-limb-during-cycling-effects-of-joint-angles-and-pedal-resistance
#16
Jia-Da Li, Tung-Wu Lu, Cheng-Chung Lin, Mei-Ying Kuo, Horng-Chaung Hsu, Wu-Chung Shen
Soft tissue artefacts (STA) are a major error source in skin marker-based measurement of human movement, and are difficult to eliminate non-invasively. The current study quantified in vivo the STA of skin markers on the thigh and shank during cycling, and studied the effects of knee angles and pedal resistance by using integrated 3D fluoroscopy and stereophotogrammetry. Fifteen young healthy adults performed stationary cycling with and without pedal resistance, while the marker data were measured using a motion capture system, and the motions of the femur and tibia/fibula were recorded using a bi-plane fluoroscopy-to-CT registration method...
April 3, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28410662/lewy-body-disorders
#17
REVIEW
Douglas Galasko
Dementia syndromes associated with Lewy bodies are subdivided into dementia with Lewy bodies (DLB), an underdiagnosed cause of dementia in the elderly, and Parkinson disease with dementia (PDD), cognitive impairment appearing in people diagnosed with Parkinson disease. Their neuropathologic substrates are the widespread distribution of aggregates of the protein α-synuclein in neurons in cortical brain regions, accompanied by variable Alzheimer pathology. Clinical features of DLB and PDD include distinctive changes in cognition, behavior, movement, sleep, and autonomic function...
May 2017: Neurologic Clinics
https://www.readbyqxmd.com/read/28410404/novel-behavioral-indicator-of-explicit-awareness-reveals-temporal-course-of-frontoparietal-neural-network-facilitation-during-motor-learning
#18
Regan R Lawson, Jordan O Gayle, Lewis A Wheaton
Deficits in sequential motor learning have been observed in many patient populations. Having an understanding of the individual neural progression associated with sequential learning in healthy individuals may provide valuable insights for effective interventions with these patients. Due to individual variability in motor skill acquisition, the temporal course of such learning will be vary, suggesting a need for a more individualized approach. Knowing when a subject becomes aware of movement patterns may provide a marker with which to identify each individual's learning time course...
2017: PloS One
https://www.readbyqxmd.com/read/28409112/plasticity-of-premotor-cortico-muscular-coherence-in-severely-impaired-stroke-patients-with-hand-paralysis
#19
Paolo Belardinelli, Leonard Laer, Erick Ortiz, Christoph Braun, Alireza Gharabaghi
Motor recovery in severely impaired stroke patients is often very limited. To refine therapeutic interventions for regaining motor control in this patient group, the functionally relevant mechanisms of neuronal plasticity need to be detected. Cortico-muscular coherence (CMC) may provide physiological and topographic insights to achieve this goal. Synchronizing limb movements to motor-related brain activation is hypothesized to reestablish cortico-motor control indexed by CMC. In the present study, right-handed, chronic stroke patients with right-hemispheric lesions and left hand paralysis participated in a four-week training for their left upper extremity...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28406688/reading-sentences-of-uniform-word-length-evidence-for-the-adaptation-of-the-preferred-saccade-length-during-reading
#20
Michael G Cutter, Denis Drieghe, Simon P Liversedge
In the current study, the effect of removing word length variability within sentences on spatial aspects of eye movements during reading was investigated. Participants read sentences that were uniform in terms of word length, with each sentence consisting entirely of three-, four-, or five-letter words, or a combination of these word lengths. Several interesting findings emerged. Adaptation of the preferred saccade length occurred for sentences with different uniform word length; participants would be more accurate at making short saccades while reading uniform sentences of three-letter words, while they would be more accurate at making long saccades while reading uniform sentences of five-letter words...
April 13, 2017: Journal of Experimental Psychology. Human Perception and Performance
keyword
keyword
43320
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"