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https://www.readbyqxmd.com/read/29760574/seasonal-variations-in-body-composition-maximal-oxygen-uptake-and-gas-exchange-threshold-in-cross-country-skiers
#1
Metin Polat, Selcen Korkmaz Eryılmaz, Sami Aydoğan
Introduction: In order to ensure that athletes achieve their highest performance levels during competitive seasons, monitoring their long-term performance data is crucial for understanding the impact of ongoing training programs and evaluating training strategies. The present study was thus designed to investigate the variations in body composition, maximal oxygen uptake (VO2max ), and gas exchange threshold values of cross-country skiers across training phases throughout a season. Materials and methods: In total, 15 athletes who participate in international cross-country ski competitions voluntarily took part in this study...
2018: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/29740562/effects-of-exercise-training-on-stroke-risk-factors-homocysteine-concentration-and-cognitive-function-according-the-apoe-genotype-in-stroke-patients
#2
Jun-Hee Lee, Sang-Min Hong, Yun-A Shin
The apolipoprotein E ( APOE ) gene has been suggested to be associated with stroke and dementia. However, the effects of exercise training on dementia according to the APOE genotype are not consistent to those reported by previous studies. Therefore, we examined the effects of exercise training on stroke risk factors including blood pressure, lipid profiles, homocysteine (Hcy) concentrations, and cognitive function according to the APOE genotype in stroke patients. We examined the stroke risk factors, Hcy, and cognitive function in 28 ischemic stroke patients before and after 6 months of exercise training...
April 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29695729/cerebral-oxygen-saturation-and-peripheral-perfusion-in-the-extremely-premature-infant-with-intraventricular-and-or-pulmonary-haemorrhage-early-in-life
#3
Thierry P Beausoleil, Marie Janaillac, Keith J Barrington, Anie Lapointe, Mathieu Dehaes
Extremely preterm infants are at higher risk of pulmonary (PH) and intraventricular (IVH) haemorrhage during the transitioning physiology due to immature cardiovascular system. Monitoring of haemodynamics can detect early abnormal circulation that may lead to these complications. We described time-frequency relationships between near infrared spectroscopy (NIRS) cerebral regional haemoglobin oxygen saturation (CrSO2 ) and preductal peripheral perfusion index (PI), capillary oxygen saturation (SpO2 ) and heart rate (HR) in extremely preterm infants in the first 72 h of life...
April 25, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29666233/integrating-effects-of-species-composition-and-soil-properties-to-predict-shifts-in-montane-forest-carbon-water-relations
#4
Toby M Maxwell, Lucas C R Silva, William R Horwath
This study was designed to address a major source of uncertainty pertaining to coupled carbon-water cycles in montane forest ecosystems. The Sierra Nevada of California was used as a model system to investigate connections between the physiological performance of trees and landscape patterns of forest carbon and water use. The intrinsic water-use efficiency (iWUE)-an index of CO2 fixed per unit of potential water lost via transpiration-of nine dominant species was determined in replicated transects along an ∼1,500-m elevation gradient, spanning a broad range of climatic conditions and soils derived from three different parent materials...
April 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29582429/early-intervention-mobilization-or-active-exercise-for-critically-ill-adults-in-the-intensive-care-unit
#5
REVIEW
Katherine A Doiron, Tammy C Hoffmann, Elaine M Beller
BACKGROUND: Survivors of critical illness often experience a multitude of problems that begin in the intensive care unit (ICU) or present and continue after discharge. These can include muscle weakness, cognitive impairments, psychological difficulties, reduced physical function such as in activities of daily living (ADLs), and decreased quality of life. Early interventions such as mobilizations or active exercise, or both, may diminish the impact of the sequelae of critical illness. OBJECTIVES: To assess the effects of early intervention (mobilization or active exercise), commenced in the ICU, provided to critically ill adults either during or after the mechanical ventilation period, compared with delayed exercise or usual care, on improving physical function or performance, muscle strength and health-related quality of life...
March 27, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29565685/acute-effects-of-repeated-bouts-of-aerobic-exercise-on-arterial-stiffness-after-glucose-ingestion
#6
Ryota Kobayashi, Yuto Hashimoto, Hiroyuki Hatakeyama, Takanobu Okamoto
The aim of this study was to investigate the acute repeated bouts of aerobic exercise decrease leg arterial stiffness. However, the influence of repeated bouts of aerobic exercise on arterial stiffness after glucose ingestion is unknown. The present study investigates the acute effects of repeated bouts of aerobic exercise on arterial stiffness after the 75-g oral glucose tolerance test (OGTT). Ten healthy young men (age, 23.2 ± 0.9 years) performed repeated bouts of aerobic exercise trial (RE, 65% peak oxygen uptake; two 15 min bouts of cycling performed 20 min apart) and control trial (CON, seated and resting in a quiet room) at 80 min before the 75-g OGTT on separate days in a randomized, controlled crossover fashion...
March 22, 2018: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29560041/muscle-specific-endurance-of-the-trapezius-muscles-using-electrical-twitch-mechanomyography
#7
Kevin K McCully, Payton Prins, Kajal Mistry, T Bradley Willingham
Background: Symptoms of fatigue and pain are often reported for the trapezius muscle in the shoulder. The present study evaluated endurance in the trapezius muscles of healthy participants using electric twitch mechanomyography (ETM). Methods: Surface electrodes and a tri-axial accelerometer were placed over the left trapezius muscle. Muscles were stimulated for 3 min each at 2 Hz, 4 Hz and 6 Hz. Maintenance of acceleration during muscle twitches was used to calculate an endurance index (EI)...
April 2018: Shoulder & Elbow
https://www.readbyqxmd.com/read/29553887/seasonal-changes-in-metabolism-and-cellular-stress-phenomena-in-the-gilthead-sea-bream-sparus-aurata
#8
Konstantinos Feidantsis, Hans O Pörtner, Elisavet Vlachonikola, Efthimia Antonopoulou, Basile Michaelidis
Seasonal temperature changes may take organisms to the upper and lower limit of their thermal range, with respective variations in their biochemical and metabolic profile. To elucidate these traits, we investigated metabolic and antioxidant patterns in tissues of sea bream Sparus aurata during seasonal acclimatization for 1 yr in the field. Metabolic patterns were assessed by determining lactate dehydrogenase, citrate synthase, and β-hydroxyacyl CoA dehydrogenase activities, their kinetic properties and plasma levels of glucose, lactate, and triglycerides and tissue succinate levels...
May 2018: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/29528955/effects-of-small-sided-games-and-high-intensity-interval-training-on-aerobic-and-repeated-sprint-performance-and-peripheral-muscle-oxygenation-changes-in-elite-junior-basketball-players
#9
A Delextrat, M Gruet, F Bieuzen
The aim of the current study was to compare the effects of 6 weeks of small-sided game (SSG) and high-intensity interval training (HIIT) on aerobic fitness and muscle oxygenation during a repeated sprint (RS) sequence in elite male junior basketball players. Twenty participants (14.3 ± 0.5 years; 176.8 ± 12.5 cm; 74.5 ± 9.8 kg) performed pre- and post-tests interspersed by 6-weeks of SSG or HIIT training. Testing sessions consisted of the 30-15 Intermittent Fitness Test and a RS sequence (two bouts of 15-s)...
March 6, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29505096/the-influence-of-environmental-features-in-the-content-of-mycosporine-like-amino-acids-in-red-marine-algae-along-the-brazilian-coast
#10
Bruno Briani, Marina N Sissini, Leidson A Lucena, Manuela B Batista, Iara O Costa, José M C Nunes, Caroline Schmitz, Fernanda Ramlov, Marcelo Maraschin, Nathalie Korbee, Leonardo Rörig, Paulo A Horta, Félix L Figueroa, José B Barufi
Mycosporine-like amino acids (MAA) are ultraviolet screen substances synthesized by marine algae. The physiological function of these substances is related to cellular protection against UV radiation and as a protective mechanism against oxidative stress. These substances can be found mainly in the ocean, among red seaweeds. Its concentration in organisms has been related to ultraviolet radiation and availability of inorganic nitrogen in the environment. We start our study of MAA content in different species to understand if environmental conditions influence the concentration of MAAs in red seaweeds...
March 5, 2018: Journal of Phycology
https://www.readbyqxmd.com/read/29481743/t3ns-three-legged-tree-tensor-network-states
#11
Klaas Gunst, Frank Verstraete, Sebastian Wouters, Örs Legeza, Dimitri Van Neck
We present a new variational tree tensor network state (TTNS) ansatz, the three-legged tree tensor network state (T3NS). Physical tensors are interspersed with branching tensors. Physical tensors have one physical index and at most two virtual indices, as in the matrix product state (MPS) ansatz of the density matrix renormalization group (DMRG). Branching tensors have no physical index, but up to three virtual indices. In this way, advantages of DMRG, in particular a low computational cost and a simple implementation of symmetries, are combined with advantages of TTNS, namely incorporating more entanglement...
April 10, 2018: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29402359/-predictive-value-of-partial-pressure-of-end-tidal-carbon-dioxide-on-the-effect-of-active-abdominal-compression-decompression-cardiopulmonary-resuscitation-and-serum-s100b-protein-on-cerebral-function
#12
Hongwei Wang, Xin Sha, Sisen Zhang, Xianfa Jiao, Longxian Zhao, Yingxin Cen, Wei Song, Jing Li, Lixiang Wang
OBJECTIVE: To explore the predictive value of partial pressure of end-tidal carbon dioxide (PET CO2 ) on the effect of active abdominal compression-decompression cardiopulmonary resuscitation (AACD-CPR) and serum S100B protein on cerebral function. METHODS: 142 adult patients with in-hospital cardiac arrest (IHCA) AACD-CPR in Zhengzhou People's Hospital, Affiliated Southern Medical University from September 2014 to December 2017 were enrolled. Patients were divided into successful group and failure group according to restoration of spontaneous circulation (ROSC) or not; and then according to Glasgow-Pittsburgh cerebral performance categories (CPC) one month after ROSC, the successful group was divided into good prognosis group (CPC 1-2) and poor prognosis group (CPC 3-5) further...
February 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29390270/anesthetic-management-of-off-pump-simultaneous-coronary-artery-bypass-grafting-and-lobectomy-case-report-and-literature-review
#13
REVIEW
Xian Zhao, Yuhong Li, Hai-Ying Kong, Lin Zhang, Xiao-Hong Wen
RATIONALE: Survey data show approximately 10% patients with lung cancer may present concomitant coronary heart disease. Simultaneous surgery is a challenge for anesthetist. We review our experience in the anesthesia with 5 patients who required simultaneous off-pump coronary artery bypass grafting (OPCABG) and pulmonary resection for lung cancer. PATIENT CONCERNS: Between 2014 and 2016, 5 patients with ASA (American Society of Anesthesiologists) grade II or III, underwent combined OPCABG and lung resection in the first Affiliated Hospital, Zhejiang University School of Medicine...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29369955/reliability-of-near-infrared-spectroscopy-for-measuring-intermittent-handgrip-contractions-in-sport-climbers
#14
Jiří Baláš, Jan Kodejška, Dominika Krupková, Johan Hannsmann, Simon Fryer
Baláš, J, Kodejška, J, Krupková, D, Hannsmann, J, and Fryer, S. Reliability of near-infrared spectroscopy for measuring intermittent handgrip contractions in sport climbers. J Strength Cond Res 32(2): 494-501, 2018-The use of near-infrared spectroscopy (NIRS) to investigate muscle oxygenation changes during physical tasks such as rock climbing has rapidly increased within recent years; yet, there is no known measure of reliability. The current study aimed to determine intersession reliability and minimal detectable change (MDC) of continuous wave NIRS parameters during intermittent handgrip contractions in rock climbers...
February 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29368457/performance-comparison-of-the-moxy-and-portamon-near-infrared-spectroscopy-muscle-oximeters-at-rest-and-during-exercise
#15
Chris J McManus, Jay Collison, Chris E Cooper
The purpose of the study was to compare muscle oxygenation as measured by two portable, wireless near-infrared spectroscopy (NIRS) devices under resting and dynamic conditions. A recently developed low-cost NIRS device (MOXY) was compared against an established PortaMon system that makes use of the spatially resolved spectroscopy algorithm. The influence of increasing external pressure on tissue oxygen saturation index (TSI) indicated that both devices are stable between 2 and 20 mmHg. However, above this pressure, MOXY reports declining TSI values...
January 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29360539/discovery-of-leonuri-and-therapeutical-applications-from-bench-to-bedside
#16
REVIEW
Yi Zhun Zhu, Weijun Wu, Qing Zhu, Xinhua Liu
Despite several advances in percutaneous coronary intervention and the discovery of new drugs, the incidence of myocardial infarction and deaths due to cardiovascular diseases (CVD) has not decreased markedly in China. The quality of life is affected seriously, which further results in great social and family burden. Many drugs, from the century-old aspirin to the newly FDA-approved Byvalson, have been proven to be effective in the treatment and prevention of CVD. As clinically reported, those life-saving drugs still have their side effects in regards to the narrow therapeutic indexes influenced by individual genetic variations...
March 8, 2018: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29356384/demographic-and-temporal-variations-in-immunity-and-condition-of-polar-bears-ursus-maritimus-from-the-southern-beaufort-sea
#17
Lorin A Neuman-Lee, Patricia A Terletzky, Todd C Atwood, Eric M Gese, Geoffrey D Smith, Sydney Greenfield, John Pettit, Susannah S French
Assessing the health and condition of animals in their natural environment can be problematic. Many physiological metrics, including immunity, are highly influenced by specific context and recent events to which researchers may be unaware. Thus, using a multifaceted physiological approach and a context-specific analysis encompassing multiple time scales can be highly informative. Ecoimmunological tools in particular can provide important indications to the health of animals in the wild. We collected blood and hair samples from free-ranging polar bears (Ursus maritimus) in the southern Beaufort Sea and examined the influence of sex, age, and reproductive status on metrics of immunity, stress, and body condition during 2013-2015...
June 2017: Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology
https://www.readbyqxmd.com/read/29350879/genetic-and-chemical-diversity-in-perovskia-abrotanoides-kar-lamiaceae-populations-based-on-issrs-markers-and-essential-oils-profile
#18
Seyyed Hossein Pourhosseini, Javad Hadian, Ali Sonboli, Samad Nejad Ebrahimi, Mohammad Hossein Mirjalili
Genetic and the essential oil composition variability among twelve Perovskia abrotanoides populations (PAbPs) growing wild in Iran were assessed by ISSR markers, GC-FID and GC/MS, respectively. Nine selected ISSR primers produced 119 discernible bands, of them 96 (80.7%) being polymorphic. Genetic similarity values among populations ranged between 0.07 and 0.79 which indicated a high level of genetic variation. Polymorphic information content, resolving power and marker index generated by ISSR primers were, 0...
March 2018: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/29350028/anisotropic-electronic-characteristics-adsorption-and-stability-of-low-index-bivo-4-surfaces-for-photoelectrochemical-applications
#19
Jun Hu, Wei Chen, Xin Zhao, Haibin Su, Zhong Chen
Many experimental results reveal different activities among different low-index surfaces of photocatalysts. The current investigation focuses on the theoretical understanding of the electronic characteristics, surface activity, and stability of different low-index surfaces of BiVO4 toward water splitting using first-principle calculations. The results indicate that BiVO4 has four types of low-index surfaces, namely, (010)T1, (010)T2, (110)T1, and (1̅11)T1. The different band edge potentials of the surfaces, resulting from the variation of the electrostatic potential, lead to a higher oxidation ability for (010)T1 and (010)T2 than for (110)T1 and (1̅11)T1 surfaces...
February 14, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29317597/preliminary-evidence-for-genetic-overlap-between-body-mass-index-and-striatal-reward-response
#20
T M Lancaster, I Ihssen, L M Brindley, D E Linden
The reward-processing network is implicated in the aetiology of obesity. Several lines of evidence suggest obesity-linked genetic risk loci (such as DRD2 and FTO) may influence individual variation in body mass index (BMI) through neuropsychological processes reflected in alterations in activation of the striatum during reward processing. However, no study has tested the broader hypotheses that (a) the relationship between BMI and reward-related brain activation (measured through the blood oxygenation-dependent (BOLD) signal) may be observed in a large population study and (b) the overall genetic architecture of these phenotypes overlap, an assumption critical for the progression of imaging genetic studies in obesity research...
January 10, 2018: Translational Psychiatry
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