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Power duration relationship

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https://www.readbyqxmd.com/read/28791311/assessment-of-diabetic-cardiomyopathy-by-cardiovascular-magnetic-resonance-t1-mapping-correlation-with-left-ventricular-diastolic-dysfunction-and-diabetic-duration
#1
Yongning Shang, Xiaochun Zhang, Weilling Leng, Liu Chen, Xiaotian Lei, Tianjing Zhang, Andreas Greiser, Ziwen Liang, Jian Wang
PURPOSE: To quantify extracellular matrix expansion with the cardiovascular magnetic resonance (CMR) T1 mapping technique and the derived extracellular volume fraction (ECV) in diabetic cardiomyopathy (DbCM) patients and to detect the relationship among ECV, duration of diabetes, and diastolic function. MATERIALS: Thirty-eight patients with diabetic cardiomyopathy (20 males, age 54.6 ± 8.6 years) and thirty-two matched normal controls (15 males, age 51.4 ± 13...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28791060/outcome-of-single-piece-intraocular-lens-sulcus-implantation-following-posterior-capsular-rupture-during-phacoemulsification
#2
Masomeh Mohebbi, Seyed Ali Bashiri, Seyed Farzad Mohammadi, Behnaz Samet, Fariba Ghassemi, Elham Ashrafi, Fatemeh Bazvand
PURPOSE: To assess the safety and outcome of single-piece posterior chamber intraocular lens (PC-IOL) implantation in the ciliary sulcus following posterior capsular rupture during cataract surgery. METHODS: Patients with posterior capsular rupture during cataract surgery with a single-piece acrylic IOL implanted into the ciliary sulcus were studied. Complete ocular examinations were performed after 6 months postoperatively. RESULTS: Twenty-four eyes were included...
July 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28790922/exercise-preserves-lean-mass-and-performance-during-severe-energy-deficit-the-role-of-exercise-volume-and-dietary-protein-content
#3
Jose A L Calbet, Jesús G Ponce-González, Jaime de La Calle-Herrero, Ismael Perez-Suarez, Marcos Martin-Rincon, Alfredo Santana, David Morales-Alamo, Hans-Christer Holmberg
The loss of fat-free mass (FFM) caused by very-low-calorie diets (VLCD) can be attenuated by exercise. The aim of this study was to determine the role played by exercise and dietary protein content in preserving the lean mass and performance of exercised and non-exercised muscles, during a short period of extreme energy deficit (~23 MJ deficit/day). Fifteen overweight men underwent three consecutive experimental phases: baseline assessment (PRE), followed by 4 days of caloric restriction and exercise (CRE) and then 3 days on a control diet combined with reduced exercise (CD)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28789662/predictive-factors-of-prolonged-mechanical-ventilation-overall-survival-and-quality-of-life-in-patients-with-post-thymectomy-myasthenic-crisis
#4
Kun-Kun Li, Kai Qian, Yong-Geng Feng, Wei Guo, Qun-You Tan, Bo Deng
BACKGROUND: Thymectomy is the primary approach for the treatment of myasthenia gravis (MG). This retrospective study aimed to identify the clinical and demographical features that may impact the duration of mechanical ventilation (DMV), the long-term survival, and the quality of life (QOL) in patients with post-thymectomy myasthenic crisis (PTMC). METHODS: We reviewed the patients who suffered from PTMC from June 2008 to November 2015. Cox proportional hazard regression analysis was used to identify potential prognostic factors that may impact DMV and long-term survival...
August 8, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28777105/reducing-circumduction-and-hip-hiking-during-hemiparetic-walking-through-targeted-assistance-of-the-paretic-limb-using-a-soft-robotic-exosuit
#5
Louis N Awad, Jaehyun Bae, Pawel Kudzia, Andrew Long, Kathryn Hendron, Kenneth G Holt, Kathleen OʼDonnell, Terry D Ellis, Conor J Walsh
OBJECTIVE: The aim of the study was to evaluate the effects on common poststroke gait compensations of a soft wearable robot (exosuit) designed to assist the paretic limb during hemiparetic walking. DESIGN: A single-session study of eight individuals in the chronic phase of stroke recovery was conducted. Two testing conditions were compared: walking with the exosuit powered versus walking with the exosuit unpowered. Each condition was 8 minutes in duration. RESULTS: Compared with walking with the exosuit unpowered, walking with the exosuit powered resulted in reductions in hip hiking (27 [6%], P = 0...
August 2, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28766012/organizing-pneumonia-and-occupational-and-environmental-risk-factors-a-case-control-study
#6
Stéphanie Jobard, Benjamin Chaigne, Sylvain Marchand-Adam, Gérard Lasfargues, Elisabeth Diot
OBJECTIVES: A single-center case-control study was carried out to investigate the relationship between occupational and environmental exposure and organizing pneumonia (OP). METHODS: Thirty-seven cases of OP, including 25 cases of cryptogenic OP, and 111 controls were included. Occupational exposure was assessed retrospectively by an industrial hygienist and an occupational physician, through semi-quantitative estimates of exposure. An exposure score was calculated for each subject, based on probability, intensity, daily frequency, and duration of exposure for each period of employment...
August 1, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28742832/the-relationship-between-movement-speed-and-duration-during-soccer-matches
#7
Kai Roecker, Hubert Mahler, Christian Heyde, Mareike Röll, Albert Gollhofer
The relationship between the time duration of movement (t(dur)) and related maximum possible power output has been studied and modeled under many conditions. Inspired by the so-called power profiles known for discontinuous endurance sports like cycling, and the critical power concept of Monod and Scherrer, the aim of this study was to evaluate the numerical characteristics of the function between maximum horizontal movement velocity (HSpeed) and t(dur) in soccer. To evaluate this relationship, GPS data from 38 healthy soccer players and 82 game participations (≥30 min active playtime) were used to select maximum HSpeed for 21 distinct t(dur) values (between 0...
2017: PloS One
https://www.readbyqxmd.com/read/28734260/time-averaged-concentrations-are-effective-for-predicting-chronic-toxicity-of-varying-copper-pulse-exposures-for-two-freshwater-green-algae-species
#8
Brad M Angel, Stuart L Simpson, Ellissah Granger, Kathryn Goodwyn, Dianne F Jolley
Intermittent, fluctuating and pulsed contaminant discharges may result in organisms receiving highly variable contaminant exposures. This study investigated the effects of dissolved copper pulse concentration and exposure duration on the toxicity to two freshwater green algae species. The effects of single copper pulses of between 1 and 48 h duration and continuous exposures (72 h) on growth rate inhibition of Pseudokirchneriella subcapitata and Chlorella sp. were compared on a time-averaged concentration (TAC) basis...
July 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28725446/sound-a-non-invasive-measure-of-cough-intensity
#9
Kai K Lee, Sergio Matos, Katie Ward, Gerrard F Rafferty, John Moxham, David H Evans, Surinder S Birring
INTRODUCTION: Cough intensity is an important determinant of cough severity reported by patients. Cough sound analysis has been widely validated for the measurement of cough frequency but few studies have validated its use in the assessment of cough strength. We investigated the relationship between cough sound and physiological measures of cough strength. METHODS: 32 patients with chronic cough and controls underwent contemporaneous measurements of voluntary cough sound, flow and oesophageal pressure...
2017: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/28688668/infectious-outcomes-of-gastroschisis-patients-with-intraoperative-hypothermia
#10
Rachel M Landisch, Roxanne L Massoumi, Melissa Christensen, Amy J Wagner
BACKGROUND: Perioperative hypothermia decreases nutrient and oxygen delivery to tissues and, in adult studies, increases the risk of infectious complications (ICs). Gastroschisis (GS) places newborns at risk for hypothermia by nature of exposed viscera and excessive heat loss. Although hypothermia is a known cause of mortality in GS, the rate of ICs in this at-risk cohort has not yet been delineated. MATERIALS AND METHODS: A retrospective cohort study was performed at our single tertiary-referral hospital, evaluating patient and operative characteristics of all GS infants who underwent operative closure...
July 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28687955/effects-of-recovery-interval-duration-on-the-parameters-of-the-critical-power-model-for-incremental-exercise
#11
Giovanni Vinetti, Nazzareno Fagoni, Anna Taboni, Stefano Camelio, Pietro Enrico di Prampero, Guido Ferretti
INTRODUCTION: We tested the linear critical power ([Formula: see text]) model for discrete incremental ramp exercise implying recovery intervals at the end of each step. METHODS: Seven subjects performed incremental (power increment 25 W) stepwise ramps to subject's exhaustion, with recovery intervals at the end of each step. Ramps' slopes (S) were 0.83, 0.42, 0.28, 0.21, and 0.08 W s(-1); recovery durations (t r) were 0 (continuous stepwise ramps), 60, and 180 s (discontinuous stepwise ramps)...
July 7, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28621577/fatigue-free-operation-of-most-body-powered-prostheses-not-feasible-for-majority-of-users-with-trans-radial-deficiency
#12
Mona Hichert, Alistair N Vardy, Dick Plettenburg
BACKGROUND: Body-powered prostheses require cable operation forces between 33 and 131 N. The accepted upper limit for fatigue-free long-duration operation is 20% of a users' maximum cable operation force. However, no information is available on users' maximum force. OBJECTIVES: To quantify users' maximum cable operation force and to relate this to the fatigue-free force range for the use of body-powered prostheses. STUDY DESIGN: Experimental trial...
June 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28596950/review-quality-of-life-in-children-with-non-cystic-fibrosis-bronchiectasis
#13
REVIEW
Anna Marie Nathan, Jessie Anne de Bruyne, Kah Peng Eg, Surendran Thavagnanam
Non-cystic fibrosis bronchiectasis (NCFB) has gained renewed interest, due to its increasing health-care burden. Annual mortality statistics in England and Wales showed that under 1,000 people die from bronchiectasis each year, and this number is increasing by 3% yearly. Unfortunately, there is a severe lack of well-powered, randomized controlled trials to guide clinicians how to manage NCFB effectively. Quality-of-life (QOL) measures in NCFB are an important aspect of clinical care that has not been studied well...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28596738/intensity-and-duration-based-options-to-regulate-endurance-training
#14
Peter Hofmann, Gerhard Tschakert
The regulation of endurance training is usually based on the prescription of exercise intensity. Exercise duration, another important variable of training load, is rarely prescribed by individual measures and mostly set from experience. As the specific exercise duration for any intensity plays a substantial role regarding the different kind of cellular stressors, degree, and kind of fatigue as well as training effects, concepts integrating the prescription of both intensity and duration within one model are needed...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28595098/the-continuity-and-duration-of-depression-and-its-relationship-to-non-suicidal-self-harm-and-suicidal-ideation-and-behavior-in-adolescents-12-17
#15
Stephen R Zubrick, Jennifer Hafekost, Sarah E Johnson, Michael G Sawyer, George Patton, David Lawrence
BACKGROUND: There is a significant overlap between non-suicidal self-harm and suicidal ideation and behavior in young people with both symptom continuity and symptom duration implicated in this association. METHODS: A population sample of Australian 12-17 year olds. Interviewers collected measures for DSM disorders, symptom duration and continuity, and background information from their parents, while young people self-reported symptoms of depression, non-suicidal self-harm and suicidal ideation and behaviors...
October 1, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28572761/ten-minutes-of-%C3%AE-tacs-and-ambient-illumination-independently-modulate-eeg-%C3%AE-power
#16
Heiko I Stecher, Tania M Pollok, Daniel Strüber, Fabian Sobotka, Christoph S Herrmann
Transcranial alternating current stimulation (tACS) sees increased use in neurosciences as a tool for the exploration of brain oscillations. It has been shown that tACS stimulation in specific frequency bands can result in aftereffects of modulated oscillatory brain activity that persist after the stimulation has ended. The general relationship between persistency of the effect and duration of stimulation is sparsely investigated but previous research has shown that the occurrence of tACS aftereffects depends on the brain state before and during stimulation...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28556312/three-dimensional-power-doppler-vascularization-in-women-with-ovarian-endometriomas-and-relationship-with-associated-painful-symptoms
#17
Francesca Rizzello, Tommaso Capezzuoli, Ippolita D'Amato Scherbatoff, Mauro Cozzolino, Loredana Gandini, Maria Elisabetta Coccia
OBJECTIVES: The objective of the study was to evaluate the correlation between endometrioma-associated pain and lesion vascularization as measured with 3-dimensional power Doppler transvaginal sonography. METHODS: Endometriomas were examined, and 4 indices were obtained: mean grayness, flow index, vascularization index, and vascularization-flow index. Dysmenorrhea, chronic pelvic pain, and dyspareunia were analyzed in terms of severity, presence/absence, and duration...
May 27, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28554877/comparison-of-ecological-momentary-assessment-versus-direct-measurement-of-e-cigarette-use-with-a-bluetooth-enabled-e-cigarette-a-pilot-study
#18
Jennifer L Pearson, Hoda Elmasry, Babita Das, Sabrina L Smiley, Leslie F Rubin, Teresa DeAtley, Emily Harvey, Yitong Zhou, Raymond Niaura, David B Abrams
BACKGROUND: Assessing the frequency and intensity of e-cigarette use presents special challenges beyond those posed by cigarette use. Accurate measurement of e-cigarette consumption, puff duration, and the stability of these measures over time will be informative for estimating the behavioral and health effects of e-cigarette use. OBJECTIVE: The purpose of this pilot study was to compare the accuracy of self-reported e-cigarette puff counts collected via ecological momentary assessment (EMA) to objective puff count data collected by a Bluetooth-enabled e-cigarette device and to examine the feasibility and acceptability of using a second-generation e-cigarette among adult smokers...
May 29, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28523425/characterization-of-electrocorticogram-high-gamma-signal-in-response-to-varying-upper-extremity-movement-velocity
#19
Po T Wang, Colin M McCrimmon, Christine E King, Susan J Shaw, David E Millett, Hui Gong, Luis A Chui, Charles Y Liu, Zoran Nenadic, An H Do
The mechanism by which the human primary motor cortex (M1) encodes upper extremity movement kinematics is not fully understood. For example, human electrocorticogram (ECoG) signals have been shown to modulate with upper extremity movements; however, this relationship has not been explicitly characterized. To address this issue, we recorded high-density ECoG signals from patients undergoing epilepsy surgery evaluation as they performed elementary upper extremity movements while systematically varying movement speed and duration...
May 18, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28497286/the-influence-of-drinking-fluid-on-endurance-cycling-performance-a-meta-analysis
#20
REVIEW
Justin J Holland, Tina L Skinner, Christopher G Irwin, Michael D Leveritt, Eric D B Goulet
BACKGROUND: Fluid replacement during cycling exercise evolves on a spectrum from simply drinking to thirst to planned structured intake, with both being appropriate recommendations. However, with mixed findings suggesting fluid intake may or may not improve endurance cycling performance (ECP) in a diverse range of trained individuals, there is a clear need for summarised evidence regarding the effect of fluid consumption on ECP. OBJECTIVES: (1) Determine the magnitude of the effect of drinking fluid on performance during cycling exercise tasks of various durations, compared with no drinking; (2) examine the relationship between rates of fluid intake and ECP; and (3) establish fluid intake recommendations based on the observations between rates of fluid intake and ECP...
May 12, 2017: Sports Medicine
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