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https://www.readbyqxmd.com/read/27923975/efficacy-of-nonselective-optogenetic-control-of-the-medial-septum-over-hippocampal-oscillations-the-influence-of-speed-and-implications-for-cognitive-enhancement
#1
Benjamin J Blumberg, Sean P Flynn, Sylvain J Barriere, Philippe R Mouchati, Rod C Scott, Gregory L Holmes, Jeremy M Barry
Optogenetics holds great promise for both the dissection of neural circuits and the evaluation of theories centered on the temporal organizing properties of oscillations that underpin cognition. To date, no studies have examined the efficacy of optogenetic stimulation for altering hippocampal oscillations in freely moving wild-type rats, or how these alterations would affect performance on behavioral tasks. Here, we used an AAV virus to express ChR2 in the medial septum (MS) of wild-type rats, and optically stimulated septal neurons at 6 Hz and 30 Hz...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/27923662/task-specificity-of-unilateral-anodal-and-dual-m1-tdcs-effects-on-motor-learning
#2
Sophia Karok, David Fletcher, Alice G Witney
Task-specific effects of transcranial direct current stimulation (tDCS) on motor learning were investigated in 30 healthy participants. In a sham-controlled, mixed design, participants trained on 3 different motor tasks (Purdue Pegboard Test, Visuomotor Grip Force Tracking Task and Visuomotor Wrist Rotation Speed Control Task) over 3 consecutive days while receiving either unilateral anodal over the right primary motor cortex (M1), dual-M1 or sham stimulation. Retention sessions were administered 7 and 28 days after the end of training...
December 3, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27919376/usability-evaluation-of-the-smart-application-for-youth-with-mtbi
#3
Judith W Dexheimer, Brad G Kurowski, Shilo H Anders, Nicole McClanahan, Shari L Wade, Lynn Babcock
OBJECTIVE: There is a dearth of evidence-based treatments available to address the significant morbidity associated with mild traumatic brain injury (mTBI). To address this gap, we designed a novel user-friendly, web-based application. We describe the preliminary evaluation of feasibility and usability of the application to promote recovery following mTBI in youth, the Self-Monitoring Activity-Restriction and Relaxation Treatment (SMART). SMART incorporates real-time recommendations for individualized symptom management and activity restriction along with training in cognitive-behavioral coping strategies...
January 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/27919204/use-maintenance-and-dose-effects-of-cognitive-speed-of-processing-training-in-parkinson-s-disease
#4
Elise G Valdés, Melissa L O'Connor, Ergun Y Uc, Robert A Hauser, Ross Andel, Jerri D Edwards
INTRODUCTION: Recent research indicated that cognitive speed of processing training (SPT) improved Useful Field of View (UFOV) among individuals with Parkinson's disease (PD). The effects of SPT in PD have not been further examined. The objectives of the current study were to investigate use, maintenance, and dose effects of SPT among individuals with PD. METHODS: Participants who were randomized to SPT or a delayed control group completed the UFOV at a six-month follow-up visit...
December 6, 2016: International Journal of Neuroscience
https://www.readbyqxmd.com/read/27918668/the-influence-of-changes-in-acute-training-load-on-daily-sensitivity-of-morning-measured-fatigue-variables-in-elite-soccer-players
#5
Robin T Thorpe, Anthony J Strudwick, Martin Buchheit, Greg Atkinson, Barry Drust, Warren Gregson
PURPOSE: To determine the sensitivity of a range of potential fatigue measures to daily training load accumulated over the previous two, three and four days during a short in-season competitive period in elite senior soccer players (n=10). METHODS: Total high-speed running distance, perceived ratings of wellness (fatigue, muscle soreness, sleep quality), counter-movement jump height (CMJ), submaximal heart rate (HRex), post-exercise heart rate recovery (HRR) and heart rate variability (HRV: Ln rMSSD) were analysed during an in-season competitive period (17 days)...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918666/quantification-of-training-and-competition-loads-in-endurance-sports-methods-and-applications
#6
Iñigo Mujika
Training quantification is basic to evaluate an endurance athlete's responses to the training loads, ensure adequate stress/recovery balance and determine the relationship between training and performance. Quantifying both external and internal workload is important, because the external workload does not measure the biological stress imposed by the exercise sessions. Generally used quantification methods include retrospective questionnaires, diaries, direct observation and physiological monitoring, often based on the measurement of oxygen uptake, heart rate and blood lactate concentration...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918665/relationships-between-internal-and-external-match-load-indicators-in-soccer-match-officials
#7
Daniel Castillo, Matthew Weston, Shaun J McLaren, Jesús Cámara, Javier Yanci
The aims of this study were to describe the internal and external match load (ML) of refereeing activity during official matches and also to investigate the relationship among the methods of ML quantification across a competitive soccer season. A further aim was to examine the usefulness of differential perceived exertion (dRPE) as a tool for monitoring internal ML in soccer referees. Twenty field referees (FR) and 43 assistant referees (AR) participated in this study. Data were collected from 30 competitive matches (FR = 20 observations, AR = 43 observations) and included measures of internal (Edwards' heart rate derived training impulse [TRIMPEDW]), external (total distance covered [TD], distance covered at high speeds [HSR] and player load [PL]) ML, differentiated ratings of perceived respiratory [sRPEres ML] and leg muscle [sRPEmus ML] exertion)...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918659/importance-of-various-training-load-measures-on-injury-incidence-of-professional-rugby-league-athletes
#8
Heidi R Thornton, Jace A Delaney, Grant M Duthie, Ben J Dascombe
PURPOSE: To investigate the ability of various internal and external training load (TL) monitoring measures to predict injury incidence amongst positional groups within professional rugby league athletes. METHODS: TL and injury data were collected across 3 seasons (2013-2015) from twenty-five players competing in the National Rugby League competition. Daily TL data were included in the analysis, including session rating of perceived exertion (sRPE-TL), total distance (TD), high-speed running distance (HSD; >5m·s(-1)) and high-metabolic power distance (HPD; >20 W·kg(-1))...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918240/circadian-rhythm-effect-on-physical-tennis-performance-in-trained-male-players
#9
Álvaro López-Samanes, Diego Moreno-Pérez, José L Maté-Muñoz, Raúl Domínguez, Jesús G Pallarés, Ricardo Mora-Rodriguez, Juan F Ortega
To determine the effect of circadian rhythm on neuromuscular responses and kinematics related to physical tennis performance, after a standardised warm-up, 13 highly competitive male tennis players were tested twice for serve velocity/accuracy (SVA), countermovement vertical jump (CMJ), isometric handgrip strength (IS), agility T-test (AGIL) and a 10-m sprint (10-m RUN). In a randomised, counter-balance order, tennis players underwent the test battery twice, either in the morning (i.e., AM; 9:00 h) and in the afternoon (i...
December 5, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27917117/training-on-working-memory-and-inhibitory-control-in-young-adults
#10
Maria J Maraver, M Teresa Bajo, Carlos J Gomez-Ariza
Different types of interventions have focused on trying to improve Executive Functions (EFs) due to their essential role in human cognition and behavior regulation. Although EFs are thought to be diverse, most training studies have targeted cognitive processes related to working memory (WM), and fewer have focused on training other control mechanisms, such as inhibitory control (IC). In the present study, we aimed to investigate the differential impact of training WM and IC as compared with control conditions performing non-executive control activities...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27915207/fixed-distance-walk-tests-at-comfortable-and-fast-speed-potential-tools-for-the-functional-assessment-of-coronary-patients
#11
Marie-Doriane Morard, Delphine Besson, Davy Laroche, Alexandre Naaïm, Vincent Gremeaux, Jean-Marie Casillas
OBJECTIVES: There is ambiguity concerning the walk tests available for functional assessment of coronary patients, particularly for the walking speed. This study explores the psychometric properties of two walking tests, based on fixed-distance tests, at comfortable and fast velocity, in stabilized patients at the end of a cardiac rehabilitation program. METHODS: At a three-day interval 58 coronary patients (mean age of 64.85±6.03 years, 50 men) performed three walk tests, the first two at a comfortable speed in a random order (6-minute walk test - 6MWT - and 400-metre comfortable walk test - 400mCWT) and the third at a brisk speed (200-metre fast walk test - 200mFWT)...
November 30, 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27914920/can-lowering-the-guidance-force-of-robot-assisted-gait-training-induce-a-sufficient-metabolic-demand-in-subacute-dependent-ambulatory-stroke-patients
#12
So Young Lee, Eun Young Han, Bo Ryun Kim, Min Ho Chun, Yong Ki Lee
OBJECTIVE: To assess the effects of guidance force (GF) and gait speed (GS) on cardiorespiratory responses and energy cost in subacute dependent ambulatory stroke patients. DESIGN: Cross sectional study. SETTING: University rehabilitation hospital. PARTICIPANTS: Ten subacute stroke patients (mean age: 64.50±19.20), who were dependent ambulators (functional ambulation category [FAC] ≤2). INTERVENTIONS: Patients participated in cardiorespiratory tests during robot-assisted gait training...
November 30, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27914411/complete-de-dopplerization-and-acoustic-holography-for-external-noise-of-a-high-speed-train
#13
Diange Yang, Junjie Wen, Feng Miao, Ziteng Wang, Xiaoan Gu, Xiaomin Lian
Identification and measurement of moving sound sources are the bases for vehicle noise control. Acoustic holography has been applied in successfully identifying the moving sound source since the 1990s. However, due to the high demand for the accuracy of holographic data, currently the maximum velocity achieved by acoustic holography is just above 100 km/h. The objective of this study was to establish a method based on the complete Morse acoustic model to restore the measured signal in high-speed situations, and to propose a far-field acoustic holography method applicable for high-speed moving sound sources...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27911409/measuring-progressive-neurological-disability-in-a-mouse-model-of-multiple-sclerosis
#14
Francesca Gilli, Darlene B Royce, Andrew R Pachner
After intracerebral infection with the Theiler's Murine Encephalomyelitis Virus (TMEV), susceptible SJL mice develop a chronic-progressive demyelinating disease, with clinical features similar to the progressive forms of multiple sclerosis (MS). The mice show progressive disability with loss of motor and sensory functions, which can be assessed with multiple apparatuses and protocols. Among them, the Rotarod performance test is a very common behavioral test, its advantage being that it provides objective measurements, but it is often used assuming that it is straightforward and simple...
November 14, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27909356/effects-of-three-weeks-of-whole-body-vibration-training-on-joint-position-sense-balance-and-gait-in-children-with-cerebral-palsy-a-randomized-controlled-study
#15
Myung-Sook Ko, Yon Ju Sim, Do Hyun Kim, Hye-Seon Jeon
Purpose : To observe the effects of whole-body vibration (WBV) training in conjunction with conventional physical therapy (PT) on joint-position sense (JPS), balance, and gait in children with cerebral palsy (CP). Methods: In this randomized controlled study, 24 children with CP were randomly selected either to continue their conventional PT or to receive WBV in conjunction with their conventional PT programme. Exposure to the intervention was intermittent (3 min WBV, 3 min rest) for 20 minutes, twice weekly for 3 weeks...
2016: Physiotherapy Canada. Physiothérapie Canada
https://www.readbyqxmd.com/read/27907850/automated-annotation-and-quantitative-description-of-ultrasound-videos-of-the-fetal-heart
#16
Christopher P Bridge, Christos Ioannou, J Alison Noble
Interpretation of ultrasound videos of the fetal heart is crucial for the antenatal diagnosis of congenital heart disease (CHD). We believe that automated image analysis techniques could make an important contribution towards improving CHD detection rates. However, to our knowledge, no previous work has been done in this area. With this goal in mind, this paper presents a framework for tracking the key variables that describe the content of each frame of freehand 2D ultrasound scanning videos of the healthy fetal heart...
November 19, 2016: Medical Image Analysis
https://www.readbyqxmd.com/read/27906332/rapid-k-space-linear-wavelength-scanning-laser-source-based-on-recirculating-frequency-shifter
#17
Minggui Wan, Lin Wang, Feng Li, Yuan Cao, Xudong Wang, Xinhuan Feng, Bai-Ou Guan, P K A Wai
We propose and successfully demonstrate a k-space linear and self-clocked wavelength scanning fiber laser source based on recirculating frequency shifting (RFS). The RFS is realized with a high speed electro-optic dual parallel Mach-Zehnder modulator operating at the state of carrier suppressed single sideband modulation. A gated short pulse is injected into an amplified RFS loop to generate the wavelength scanning pulse train. We find that the accumulation of in-band amplified spontaneous emission (ASE) noise over multiple scanning periods will saturate the erbium-doped fiber amplifier and impede the amplification to the pulse signal in the RFS loop...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27905864/determining-friction-and-effective-loading-for-sled-sprinting
#18
Matt R Cross, Farhan Tinwala, Seth Lenetsky, Pierre Samozino, Matt Brughelli, Jean-Benoit Morin
Understanding the impact of friction in sled sprinting allows the quantification of kinetic outputs and the effective loading experienced by the athlete. This study assessed changes in the coefficient of friction (µk) of a sled sprint-training device with changing mass and speed to provide a means of quantifying effective loading for athletes. A common sled equipped with a load cell was towed across an athletics track using a motorised winch under variable sled mass (33.1-99.6 kg) with constant speeds (0...
December 1, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27901413/dose-response-outcomes-associated-with-different-forms-of-locomotor-training-in-persons-with-chronic-motor-incomplete-spinal-cord-injury
#19
Evan Blake Sandler, Kathryn E Roach, Edelle C Field-Fote
Outcomes of training are thought to be related to amount of training (training dose). While various approaches to locomotor training have been used to improve walking function in persons with spinal cord injury, little is known about the relationship between dose of locomotor training and walking outcomes. This secondary analysis aimed to identify the relationship between training dose and improvement in walking distance and speed associated with the largest randomized clinical trial to date of locomotor training in participants with chronic motor-incomplete spinal cord injury (MISCI)...
November 30, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27900149/video-analysis-of-concussion-injury-mechanism-in-under-18-rugby
#20
Sharief Hendricks, Sam O'Connor, Michael Lambert, James C Brown, Nicholas Burger, Sarah Mc Fie, Clint Readhead, Wayne Viljoen
BACKGROUND: Understanding the mechanism of injury is necessary for the development of effective injury prevention strategies. Video analysis of injuries provides valuable information on the playing situation and athlete-movement patterns, which can be used to formulate these strategies. Therefore, we conducted a video analysis of the mechanism of concussion injury in junior-level rugby union and compared it with a representative and matched non-injury sample. METHODS: Injury reports for 18 concussion events were collected from the 2011 to 2013 under-18 Craven Week tournaments...
2016: BMJ Open Sport & Exercise Medicine
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