Read by QxMD icon Read


Mario Sánchez-García, Javier Sánchez-Sánchez, Alejandro Rodríguez-Fernández, David Solano, Daniel Castillo
The aim of this study was to analyze the association between sprint ability and endurance capacity in soccer referees. Twenty-three Spanish officials participated in this study. Each referee undertook, in this order, a 40 m linear straight sprinting test (40 m Sprint) and the Yo⁻Yo intermittent recovery level 1 test (YYIR1) interspersed with a 8 min of self-administered rest. The results in the 40 m Sprint test showed that the time spent by referees was 5.56 ± 0.27 s and achieved a maximum velocity of 31...
March 30, 2018: Sports
Amund Riiser, Vidar Andersen, Carlo Castagna, Svein Arne Pettersen, Atle Saeterbakken, Christian Froyd, Einar Ylvisaker, Terje Naess Kjosnes, Vegard Fusche Moe
As of 2017, the international football federation introduced the change of direction ability test (CODA) and the 5×30 m sprint test for assistant referees (ARs) and continued the 6×40 m sprint test for field referees (FRs) as mandatory tests. The aim of this study was to evaluate the association between performance in these tests and running performance during matches at the top level in Norway. The study included 9 FRs refereeing 21 matches and 19 ARs observed 53 times by a local positioning system at three stadiums during the 2016 season...
June 14, 2018: International Journal of Sports Medicine
Monika Dmitrzak-Weglarz, Edyta Reszka
Circadian rhythm alterations resulting in disturbed sleep and disturbed melatonin secretion are flagship features of depression. Melatonin, known as a hormone of darkness, is secreted by the pineal gland located near to the center of the brain between the two hemispheres. Melatonin has an antidepressant effect by maintaining the body's circadian rhythm, by regulating the pattern of expression of the clock genes in the suprachiasmatic nucleus (SCN) and modifying the key genes of serotoninergic neurotransmission that are linked with a depressive mood...
June 13, 2018: Neuropsychobiology
(no author information available yet)
No abstract text is available yet for this article.
July 2018: BJOG: An International Journal of Obstetrics and Gynaecology
(no author information available yet)
No abstract text is available yet for this article.
June 8, 2018: Journal of Materials Science. Materials in Medicine
Hasan Obeid, Gilles Soulat, Elie Mousseaux, Stephane Laurent, Nikos Stergiopulos, Pierre Boutouyrie, Patrick Segers
Dear editor, dear referees, please find below the point to point responses to the review of our reply on comments (RE: PMEA-102395) entitled: NUMERICAL ASSESSMENT AND COMPARISON OF PULSE WAVE VELOCITY METHODS AIMING AT MEASURING AORTIC STIFFNESS. We addressed all the questions and tried to modify the text each time it was possible. We hope that our answers will satisfy the referees.
June 5, 2018: Physiological Measurement
Michael Zenz, Julia Zenz, Maximilian Grieger
Since 1975, the Declaration of Helsinki of the World Medical Association (WMA) has clearly required ethics committee approval for research into humans. Nevertheless, this Declaration is violated quite often. As many English-language publications have addressed the theme of ethics board approval in theses and other published works, it is now to be investigated in Germany for the first time.From 2013 to 2014, a total of 1,482 medical theses at four selected universities in addition to three German-language scientific journals were reviewed...
June 5, 2018: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
Jialin Fan, Andrew P Smith
Background: Fatigue is a severe problem in the rail industry, which may jeopardize train crew's health and safety. Nonetheless, a preliminary review of all empirical evidence for train crew fatigue is still lacking. The aim of the present paper is, therefore, to provide a preliminary description of occupational fatigue in the rail industry. This paper reviews the literature with the research question examining the risk factors associated with train crew fatigue, covering both papers published in refereed journals and reports from trade organizations and regulators...
2018: Frontiers in Psychology
Wei Shi, Shixi Chen, Xiaoyu Kong, Lizhen Si, Li Gong, Yanchun Zhang, Hui Yu
BACKGROUND: The monophyly of flatfishes has not been supported in many molecular phylogenetic studies. The monophyly of Pleuronectoidei, which comprises all but one family of flatfishes, is broadly supported. However, the Psettodoidei, comprising the single family Psettodidae, is often found to be most closely related to other carangimorphs based on substantial sequencing efforts and diversely analytical methods. In this study, we examined why this particular result is often obtained...
May 25, 2018: BMC Genomics
Masoume Rambod, Mohammadali Nazarinia, Farahnaz Raieskarimian
It has not been clear what kinds and how much nutrients could be harmful, preventive, or healthful for development of rheumatoid arthritis. This study aimed to determine the impact of dietary habits on the pathogenesis of rheumatoid arthritis. This case-control study was conducted on a total of 500 rheumatoid arthritis patients and 500 healthy controls refereed to three clinics of Shiraz University of Medical Sciences in 2015-2016. Convenience sampling was used for data collection in both case and control groups...
May 22, 2018: Clinical Rheumatology
Daniel Castillo, Carlo Castagna, Jesús Cámara, Aitor Iturricastillo, Javier Yanci
Castillo, D, Castagna, C, Cámara, J, Iturricastillo, A, and Yanci, J. Influence of team's rank on soccer referees' external and internal match loads during official matches. J Strength Cond Res 32(6): 1715-1722, 2018-The aim was to examine the external and the internal match loads (ML) of field referees (FRs) attending teams of different ranking during championship matches. Twenty FR who officiated in 30 official soccer matches (30 observations) participated in our study. The criteria for allocating the soccer referees' ML results were based on the teams' final league positions as follows: matches performed by Top 10 teams (TOP10), matches performed by bottom 10 teams (BOT10), and matches played among TOP10 and BOT10 teams (MIXED)...
June 2018: Journal of Strength and Conditioning Research
Roger Lee Mendoza
AIM: We review clinical evidence of therapeutic efficacy and effectiveness of omega-3 fatty acids (omega-3s) in keratoconjunctivitis sicca, colloquially known as dry eye disease. In doing so, we identify relevant literature to address the following questions: 1) What definitive guidance can clinical evidence offer eye physicians and their patients? 2) What aspects of omega-3 supplementation lack definitive evidence, and how might economic assessments help? METHODS: A targeted and systematic search strategy based on PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) was designed in this study for refereed clinical trials of omega-3s in dry eye treatment...
May 21, 2018: Journal of Medical Economics
Guilherme M Cunha, Kevin J Glaser, Anke Bergman, Rodrigo P Luz, Eduardo Figueiredo, Flavia Paiva Proença Lobo Lopes
OBJECTIVE: To evaluate the agreement of three MRE sequences in patients undergoing liver MRI for clinical care. METHODS: A cross-sectional retrospective study was performed with 223 patients referred for liver MRI, including 12 patients with liver iron overload. Data obtained with Spin-Echo (SE) and Gradient-Echo (GRE) MRE sequences were compared. Multiple linear regression adjusted for the presence of liver fat was also performed to assess the correlation between fat infiltration and stiffness measurements results...
May 2, 2018: British Journal of Radiology
He Cai, Rong Zhou, Wanying Liang, Jianliu Wang
RATIONALE: Dedifferentiated endometrioid adenocarcinoma (DEAC) consisted of a combination of undifferentiated and differentiated carcinoma is more aggressive than other conventional endometrioid adenocarcinomas. PATIENT CONCERNS: A 33-year-old woman with atypical vaginal bleeding was refereed to our hospital. She had an endometrial biopsy in a local clinic which showed differentiated endometrioid carcinoma with trophoblastic components. High levels of β-Human chorionic gonadotropin (β-hCG) and alfa-fetoprotein (AFP) were detected in the patient's serum...
April 2018: Medicine (Baltimore)
Keith Stammers
These comments focus on the thermoluminescence aspect of the paper by Siti Rozaila et al, in particular the poor calibration of the TL dosimeters; not taking account of dark current signal; an incorrect method of measuring the fading factor and an incorrect method of correcting for fading of the TL signal. 
 An opinion is expressed that the paper has not been refereed adequately.
April 26, 2018: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
Morris Banda, Heinrich W Grobbelaar, Elmarie Terblanche
BACKGROUND: Elite athletes need to optimise their body composition to deliver world class performances and this argument could be extended to elite referees as well. Unfortunately, there is a scarcity of body composition information among football referees. AIM: The aim of the study was to determine and compare the body composition and somatotypes of male football referees and assistant referees who officiated in the 2013 Zimbabwe Premier Football League. METHODS: Forty-one participants (21 referees, 20 assistant referees; 8 FIFA, 33 ZIFA licenced referees) with a mean age of 34...
April 20, 2018: Journal of Sports Medicine and Physical Fitness
Yang Li, Zilong Wang, Cheng Zhang, Peiyang Gu, Wangqiao Chen, Hua Li, Jianmei Lu, Qichun Zhang
A novel thiadiazoloquinoxaline (TQ)-based donor-acceptor (D-A)-type N-heteroacene (Py-1-TQ) has been demonstrated for promising applications in organic multilevel resistive memory devices. Compared with its counterparts (Py-0-TQ and Py-2-TQ), which show flash-type binary memory behaviors, Py-1-TQ exhibits excellent nonvolatile write-once-read-many-times-type ternary memory effects with high ON2/ON1/OFF current ratios (105.8 :103.4 :1), which can be attributed to the different electron-withdrawing abilities between the pyrazine unit and TQ species that can induce stepwise D-A charge-transfer processes...
May 9, 2018: ACS Applied Materials & Interfaces
Nicolas P Rougier, Konrad Hinsen
No abstract text is available yet for this article.
April 2018: Nature
Matthew R Blair, Nathan Elsworthy, Nancy J Rehrer, Chris Button, Nicholas D Gill
PURPOSE: To examine the movement and physiological demands of rugby union officiating within elite competition. METHODS: Movement demands of 9 elite officials across 12 Super Rugby matches were calculated, using global positioning system devices. Total distance (m), relative distance (m·min-1 ), percentage time spent within various speed zones were calculated across a match. Heart rate responses were also recorded throughout each match. Cohen d effect sizes were reported to examine the within match variations...
April 13, 2018: International Journal of Sports Physiology and Performance
Glyn B Steventon, Stephen C Mitchell
Mice that were heterozygous dominant for the enu1 and enu2 mutation in phenylalanine monooxygenase/phenylalanine hydroxylase (PAH) resulted in hepatic PAH assays for S-carboxymethyl-L-cysteine (SCMC) that had significantly increased calculated Km (wild type (wt)/enu1, 1.84-2.12 fold increase and wt/enu2 a 2.75 fold increase in PAH assays). The heterozygous dominant phenotypes showed a significantly reduced catalytic turnover of SCMC (wt/enu1, 6.11 fold decrease and wt/enu2 an 11.25 fold decrease in calculated Vmax )...
April 27, 2018: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
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"