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https://www.readbyqxmd.com/read/28717626/muscle-fatigue-in-participants-of-indoor-cycling
#1
Ricardo de Melo Dos Santos, Flavio Costa E Costa, Thais Sepeda Saraiva, Bianca Callegari
BACKGROUND: Indoor Cycling (IC) has been gaining recognition and popularity within recent years and few studies have investigated its benefits for sedentary participants. OBJECTIVE: The aim of this study was to evaluate differences in the surface electromyography (sEMG) variables, heart rate (HR), and subjective effort in sedentary participants while they performed an IC session and to compare their results with the trained subjects, to answer the question: Are trained cyclists less susceptible to muscle fatigue, since it is expected that they make less effort? DESIGN: Twenty-six volunteers were split into two groups according to their fitness status and weekly training load...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28704880/left-ventricular-adaptation-to-12-weeks-of-indoor-cycling-at-the-gym-in-untrained-females
#2
Kristofer Hedman, Niclas Bjarnegård, Toste Länne
Cross-sectional studies provide evidence of larger cardiac dimensions and mass in endurance trained than in untrained females. Much less is known regarding adaptations in cardiac function following training in untrained subjects. We aimed to study left ventricular (LV) adaptation to indoor cycling in previously untrained females, in regard of LV dimensions, mass and function. 42 sedentary females were divided into 2 equally sized groups, either training indoor cycling at regular classes at a local gym for 12 weeks, in average 2...
July 13, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28695834/sand-flies-and-their-control-methods
#3
Hüseyin Çetin, Yusuf Özbel
The main aim of managing arthropod vectors that carry the disease agents is interrupting the infection cycle. Therefore, the management of the disease implies that all precautions related to all elements (i.e., human, arthropod vector, and reservoir) in the infection cycle need to be taken. There are important points that need to be considered while dealing with sand flies (Diptera: Psychodidae: Phlebotominae), which in many regions worldwide, particularly in tropical and subtropical areas, are vectors of diseases such as leishmaniasis and sand fly fever and are the arthropods of the infection cycle...
June 2017: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/28689280/analysis-of-toxicity-effects-of-di-2-ethylhexyl-phthalate-exposure-on-human-bronchial-epithelial-16hbe-cells
#4
Yue Ma, Yinsheng Guo, Shuang Wu, Ziquan Lv, Qian Zhang, Xing Xie, Yuebin Ke
Recent studies have indicated that Di-(2-ethylhexyl) phthalate (DEHP), the most commonly used plasticizer in daily-life products, could be dispersed in indoor air and induce human exposure via inhalation. DEHP has been reported to have effects on the respiratory system in both animal and human researches. The toxicity effects of DEHP exposure on cell proliferation, cell cycle progression, apoptosis, global DNA methylation and the expression levels of DNA methyltransferases (DNMTs) were investigated in this study, using human epithelial cell line 16HBE as an in vitro model...
July 8, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28682605/characterizing-aggregated-exposure-to-primary-particulate-matter-recommended-intake-fractions-for-indoor-and-outdoor-sources
#5
Peter Fantke, Olivier Jolliet, Joshua S Apte, Natasha Hodas, John Evans, Charles J Weschler, Katerina S Stylianou, Matti Jantunen, Thomas E McKone
Exposure to fine particulate matter (PM2.5) from indoor and outdoor sources is a leading environmental contributor to global disease burden. In response, we established under the auspices of the UNEP/SETAC Life Cycle Initiative a coupled indoor-outdoor emission-to-exposure framework to provide a set of consistent primary PM2.5 aggregated exposure factors. We followed a matrix-based mass balance approach for quantifying exposure from indoor and ground-level urban and rural outdoor sources using an effective indoor-outdoor population intake fraction and a system of archetypes to represent different levels of spatial detail...
July 19, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28678622/carbohydrate-mouth-rinse-does-not-affect-performance-during-a-60-min-running-race-in-women
#6
Costas Chryssanthopoulos, Christos Ziaras, Tanja Oosthuyse, Ioannis Lambropoulos, Paradisis Giorgios P, Elias Zacharogiannis, Anastassios Philippou, Maria Maridaki
This study examined the effect of carbohydrate mouth rinsing on endurance running performance in women. Fifteen female recreational endurance runners, who used no oral contraceptives, ran two races of 1-h duration on an indoor track (216-m length) at 18:00 h after an 8-h fast with a 7-days interval between races, corresponding to the 3(rd)-10th day of each premenopausal runner's menstrual cycle, or any day for the postmenopausal runners. In a double-blind random order, participants rinsed their mouth with 25 ml of either a 6...
July 5, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28661666/a-fine-tuned-metal-organic-framework-for-autonomous-indoor-moisture-control
#7
Rasha G AbdulHalim, Prashant M Bhatt, Youssef Belmabkhout, Aleksander Shkurenko, Karim Adil, Leonard J Barbour, Mohamed Eddaoudi
Conventional adsorbents, namely zeolites and silica gel, are often used to control humidity by adsorbing water; however, adsorbents capable of dual functionality of humidification and dehumidification, offering the desired control of the moisture level at room temperature, has yet to be explored. Here we report Y-shp-MOF-5, a hybrid microporous highly-connected Rare-Earth based metal-organic framework (MOF), with dual functionality for moisture control within the recommended range of relative humidity (45% to 65% RH) set by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE)...
June 29, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28659561/detection-of-fungi-from-an-indoor-environment-using-loop-mediated-isothermal-amplification-lamp-method
#8
Takako Nakayama, Takashi Yamazaki, Ayaka Yo, Kazuya Tone, Mohamed Mahdi Alshahni, Ryuichi Fujisaki, Koichi Makimura
 Loop-mediated isothermal amplification (LAMP) is a useful DNA detection method with high specificity and sensitivity. The LAMP reaction is carried out within a short time at a constant temperature without the need for thermal cycling. We developed a LAMP primer set for detecting a wide range of fungi by aligning the sequences of the large subunit ribosomal RNA gene of Candida albicans (Ascomycota), Cryptococcus neoformans (Basidiomycota), and Mucor racemosus (Mucorales). The threshold of C. albicans rDNA as template with our LAMP primer set was in the range of 10-100 copies per a reaction...
2017: Biocontrol Science
https://www.readbyqxmd.com/read/28642231/secondhand-smoke-exposure-among-community-dwelling-adult-cancer-survivors-in-the-united-states-1999-2012
#9
Oladimeji Akinboro, Odunayo Olorunfemi, Prasanta Basak, Elizabeth Phillips, Daniel Pomerantz, Bernard Bernhardt, Rasim Gucalp, Stephen Jesmajian, Jamie S Ostroff
Background: Little is known about the prevalence of secondhand smoke exposure (SHSe) among cancer survivors. We sought to determine the prevalence, trends, and correlates of SHSe among nonsmoking adult cancer survivors in the United States.Methods: Interview and serum cotinine data for nonsmoking adults, age 20 years and older, with a history of cancer (N = 686) were obtained from consecutive two-year cross-sectional cycles of the National Health and Nutrition Examination Survey from 1999 to 2012. SHSe was defined as serum cotinine 0...
June 22, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28632054/middle-finger-and-ball-movements-around-ball-release-during-baseball-fastball-pitching
#10
Tomoyuki Matsuo, Tsutomu Jinji, Daisaku Hirayama, Daiki Nasu, Hiroki Ozaki, Daisuke Kumagawa
The objectives of this study were to investigate middle finger movements and dynamics of ball movements around the instant of ball release during baseball pitching. Baseball pitching from an indoor mound among 14 semi-professional pitchers was captured using a motion capture system with 16 high-speed cameras (1,000 Hz). Kinematics of middle finger joints, ball rotation, and force applied to the ball were calculated. The proximal and distal interphalangeal joints continued to extend until the instant of ball release, then abruptly flexed...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28618783/pulsed-light-emitting-diodes-for-higher-phytochemical-level-in-microgreens
#11
Viktorija Vaštakaitė, Akvilė Viršilė, Aušra Brazaitytė, Giedrė Samuolienė, Julė Jankauskienė, Algirdas Novičkovas, Pavelas Duchovskis
A novel research of pulsed LED lighting versus continuous lighting was conducted by analyzing phytochemicals levels in microgreens. Red pak choi (Brassica rapa var. chinensis), mustard (Brassica juncea L.) and tatsoi (Brassica rapa var. rosularis) were grown indoors under HPS lamps supplemented with monochromatic (455 nm, 470 nm, 505 nm, 590 nm and 627 nm) LEDs (total PPFD 200±10 µmol m(-2) s(-1); 16 h day(-1)). For pulsed light treatments, the frequencies at 2 Hz, 32 Hz, 256 Hz, and 1024 Hz with a duty cycle of 50% of monochromatic LEDs were applied...
June 15, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28574076/bushy-sphere-dendrites-with-husk-shaped-branches-axially-spreading-out-from-the-core-for-photo-catalytic-oxidation-remediation-of-toxins
#12
Mohamed A Shenashen, Satoshi Kawada, Mahmoud M Selim, Wafaa M Morsy, Hitoshi Yamaguchi, Abdulaziz A Alhamid, Naoki Ohashi, Izumi Ichinose, Sherif A El-Safty
This work describes densely interlinked bushy "tree-like chains" characterized by neatly branched sphere dendrites (bushy sphere dendrites, BSD) with long fan-like, husk-shaped branching paths that extend longitudinally from the core axis of the {110}-exposed plane. We confirmed that the hierarchical dendrite surfaces created bowls of swirled caves along the tree-tube in the mat-like branches. These surfaces had high-index catalytic site facets associated with the formation of ridges/defects on the dominant {110}-top-cover surface...
June 2, 2017: Nanoscale
https://www.readbyqxmd.com/read/28545418/maternal-child-co-participation-in-physical-activity-related-behaviours-prevalence-and-cross-sectional-associations-with-mothers-and-children-s-objectively-assessed-physical-activity-levels
#13
Jill A Hnatiuk, Ellen DeDecker, Kylie D Hesketh, Greet Cardon
BACKGROUND: Co-participation in physical activity may be a useful strategy for increasing physical activity in mothers and their young children, yet little empirical evidence exists on this topic for young families. This study aimed to identify the prevalence of mother-child co-participation in physical activity and examine the association between co-participatory behaviours and objectively-assessed physical activity in young children and their mothers. METHODS: One-hundred twenty-three 4-6 year-old children and their mothers were recruited from preschools in Belgium between November 2010 and January 2011...
May 25, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28526259/the-impact-of-daytime-light-exposures-on-sleep-and-mood-in-office-workers
#14
Mariana G Figueiro, Bryan Steverson, Judith Heerwagen, Kevin Kampschroer, Claudia M Hunter, Kassandra Gonzales, Barbara Plitnick, Mark S Rea
BACKGROUND: By affecting the internal timing mechanisms of the brain, light regulates human physiology and behavior, perhaps most notably the sleep-wake cycle. Humans spend over 90% of their waking hours indoors, yet light in the built environment is not designed to affect circadian rhythms. OBJECTIVE: Using a device calibrated to measure light that is effective for the circadian system (circadian-effective light), collect personal light exposures in office workers and relate them to their sleep and mood...
June 2017: Sleep Health
https://www.readbyqxmd.com/read/28485953/galvanostatic-rejuvenation-of-electrochromic-wo3-thin-films-ion-trapping-and-detrapping-observed-by-optical-measurements-and-by-time-of-flight-secondary-ion-mass-spectrometry
#15
Bill Baloukas, Miguel A Arvizu, Rui-Tao Wen, Gunnar A Niklasson, Claes G Granqvist, Richard Vernhes, Jolanta E Klemberg-Sapieha, Ludvik Martinu
Electrochromic (EC) smart windows are able to decrease our energy footprint while enhancing indoor comfort and convenience. However, the limited durability of these windows, as well as their cost, result in hampered market introduction. Here, we investigate thin films of the most widely studied EC material, WO3. Specifically, we combine optical measurements (using spectrophotometry in conjunction with variable-angle spectroscopic ellipsometry) with time-of-flight secondary ion mass spectrometry and atomic force microscopy...
May 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28480687/effects-of-age-sex-sweat-rate-and-environmental-conditions-on-heart-rate-and-perceived-exertion-in-indoor-cycling
#16
Carlos Barbado, Davinia Vicente-Campos, José Lopez-Chicharro
BACKGROUND: Indoor cycling sessions are usually guided by heart rate (HR) and rating of perceived exertion (RPE). This study was designed to examine the effects of sex, age, previous experience, use of a HR monitor, estimated sweat rate and room temperature and humidity increases on HR and RPE during indoor cycling sessions. METHODS: Measurements were made in 39 sessions performed by 300 experienced subjects. Sweat rate was categorized as SR1 ≥ 750, SR2 = 400-749 and SR3 < 400 ml; temperature increase as T1 ≤ 0...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28447292/ecology-of-the-human-opportunistic-black-yeast-exophiala-dermatitidis-indicates-preference-for-human-made-habitats
#17
Monika Novak Babič, Jerneja Zupančič, Nina Gunde-Cimerman, Sybren de Hoog, Polona Zalar
Exophiala dermatitidis is an ascomycetous black yeast from the order Chaetothyriales. Its growth characteristics include the polymorphic life cycle, ability to grow at high and low temperatures, at a wide pH range, survival at high concentrations of NaCl, and survival at high UV and radioactive radiation. Exophiala dermatitidis causes deep or localized phaeohyphomycosis in immuno-compromised people worldwide and is regularly encountered in the lungs of cystic fibrosis patients. Regardless of numerous ecological studies worldwide, little is known about its natural habitat or the possible infection routes...
April 26, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28420133/using-dimensionality-reduction-techniques-for-refining-passive-indoor-positioning-systems-based-on-radio-fingerprinting
#18
Pedro E Lopez-de-Teruel, Oscar Canovas, Felix J Garcia
Indoor positioning methods based on fingerprinting and radio signals rely on the quality of the radio map. For example, for room-level classification purposes, it is required that the signal observations related to each room exhibit significant differences in their RSSI values. However, it is difficult to verify and visualize that separability since radio maps are constituted by multi-dimensional observations whose dimension is directly related to the number of access points or monitors being employed for localization purposes...
April 15, 2017: Sensors
https://www.readbyqxmd.com/read/28398944/alpine-skiing-as-winter-time-high-intensity-training
#19
Thomas Stöggl, Christoph Schwarzl, Edith E Müller, Masaru Nagasaki, Julia Stöggl, Martin Schönfelder, Josef Niebauer
INTRODUCTION: To counteract the winter activity deficit, we set out to analyze cardiorespiratory and metabolic responses of two high intensity training (HIT) protocols during alpine skiing (AS), cross-country skiing (XCS) and indoor cycling (IC) and the effects of sex, age and fitness level in this comparison. METHODS: Nineteen healthy subjects (two age and fitness groups, both sexes) performed AS, XCS, and IC with measurements of oxygen uptake (VO2), energy expenditure (EE), heart rate (HR), lactate, blood glucose and rate of perceived exertion, determined during 4-min of continuous high intensity (HITc: 90% HRmax for XCS and IC or short turn skiing during AS) or 10-min intermittent HIT [HITint: 5x1' high intensity (>90% HRmax or short turn skiing), 1' active recovery]...
April 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28367676/are-individual-differences-in-sleep-and-circadian-timing-amplified-by-use-of-artificial-light-sources
#20
Krithika Swaminathan, Elizabeth B Klerman, Andrew J K Phillips
Within the human population, there is large interindividual variability in the timing of sleep and circadian rhythms. This variability has been attributed to individual differences in sleep physiology, circadian physiology, and/or light exposure. Recent experimental evidence suggests that the latter is necessary to evoke large interindividual differences in sleep and circadian timing. We used a validated model of human sleep and circadian physiology to test the hypothesis that intrinsic differences in sleep and circadian timing are amplified by self-selected use of artificial light sources...
April 2017: Journal of Biological Rhythms
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