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Cycling indoor

K Udeni Alwis, T Liz Bailey, Dhrusti Patel, Liqun Wang, Benjamin C Blount
Isoprene, the 2-methyl analog of 1,3-butadiene, is identified as a possible human carcinogen by the International Agency for Research on Cancer (IARC). Isoprene is ubiquitous in the environment with numerous natural and anthropogenic sources. Tobacco smoke is the main exogenous source of isoprene exposure in indoor environments. Among smoke constituents, isoprene is thought to contribute significantly to cancer risk; however, no selective urinary biomarkers of isoprene exposure have been identified for humans...
October 19, 2016: Analytica Chimica Acta
Wouter Fransman, Harrie Buist, Eelco Kuijpers, Tobias Walser, David Meyer, Esther Zondervan-van den Beuken, Joost Westerhout, Rinke H Klein Entink, Derk H Brouwer
For safe innovation, knowledge on potential human health impacts is essential. Ideally, these impacts are considered within a larger life-cycle-based context to support sustainable development of new applications and products. A methodological framework that accounts for human health impacts caused by inhalation of engineered nanomaterials (ENMs) in an indoor air environment has been previously developed. The objectives of this study are as follows: (i) evaluate the feasibility of applying the CF framework for NP exposure in the workplace based on currently available data; and (ii) supplement any resulting knowledge gaps with methods and data from the life cycle approach and human risk assessment (LICARA) project to develop a modified case-specific version of the framework that will enable near-term inclusion of NP human health impacts in life cycle assessment (LCA) using a case study involving nanoscale titanium dioxide (nanoTiO2 )...
September 24, 2016: Risk Analysis: An Official Publication of the Society for Risk Analysis
Amanda Ooi, Aloysius Wong, Tien Khee Ng, Claudius Marondedze, Christoph Gehring, Boon S Ooi
Indoor horticulture offers a sensible solution for sustainable food production and is becoming increasingly widespread. However, it incurs high energy and cost due to the use of artificial lighting such as high-pressure sodium lamps, fluorescent light or increasingly, the light-emitting diodes (LEDs). The energy efficiency and light quality of currently available horticultural lighting is suboptimal, and therefore less than ideal for sustainable and cost-effective large-scale plant production. Here, we demonstrate the use of high-powered single-wavelength lasers for indoor horticulture...
2016: Scientific Reports
Lei Huang, Alexi Ernstoff, Peter Fantke, Susan A Csiszar, Olivier Jolliet
Exposure to chemicals in consumer products has been gaining increasing attention, with multiple studies showing that near-field exposures from products is high compared to far-field exposures. Regarding the numerous chemical-product combinations, there is a need for an overarching review of models able to quantify the multiple transfers of chemicals from products used near-field to humans. The present review therefore aims at an in-depth overview of modeling approaches for near-field chemical release and human exposure pathways associated with consumer products...
September 16, 2016: Science of the Total Environment
Zhen-Zhen Xie, Lin Wang, Ge Cheng, Lei Shi, Yi-Bo Zhang
A specific type of materials actived carbon fiber (ACF) was modified by SiO2 and obtained the final products ACF-x as ACF-12.5, ACF-20, ACF-40 and ACF-80 according to different dosage of tetraethoxysilane (TEOS). The modified material on the ACF surface had a significant and smooth cover layer with low content of silica from SEM image. The modified ACF-x showed the stronger hydrophobicity, thermal stability and adsorption capacity, with which had almost no effect in the presence of water vapor and no destruction in multiple-cycles...
August 31, 2016: Journal of the Air & Waste Management Association
Ellen L McGough, Cynthia A Robinson, Mark D Nelson, Raymond Houle, Gabriell Fraser, Leslie Handley, Emilie R Jones, Dagmar Amtmann, Valerie E Kelly
BACKGROUND AND PURPOSE: Individuals with Parkinson disease (PD) have motor and nonmotor impairments that interfere with exercise participation. The purpose of this study was to examine the feasibility and physical performance outcomes of a community-based indoor tandem cycling program that was designed to facilitate a higher cadence, consistency, and intensity of training. METHODS: Forty-one participants with mild to moderate PD were enrolled. A high-cadence cycling protocol using mechanically augmented (or forced) exercise on a tandem bicycle was adapted for our program...
October 2016: Journal of Neurologic Physical Therapy: JNPT
David M Poché, William E Grant, Hsiao-Hsuan Wang
BACKGROUND: Visceral leishmaniasis (VL) is a disease caused by two known vector-borne parasite species (Leishmania donovani, L. infantum), transmitted to man by phlebotomine sand flies (species: Phlebotomus and Lutzomyia), resulting in ≈50,000 human fatalities annually, ≈67% occurring on the Indian subcontinent. Indoor residual spraying is the current method of sand fly control in India, but alternative means of vector control, such as the treatment of livestock with systemic insecticide-based drugs, are being evaluated...
August 2016: PLoS Neglected Tropical Diseases
Sadik Kamel Gharghan, Rosdiadee Nordin, Mahamod Ismail
In this paper, we propose two soft computing localization techniques for wireless sensor networks (WSNs). The two techniques, Neural Fuzzy Inference System (ANFIS) and Artificial Neural Network (ANN), focus on a range-based localization method which relies on the measurement of the received signal strength indicator (RSSI) from the three ZigBee anchor nodes distributed throughout the track cycling field. The soft computing techniques aim to estimate the distance between bicycles moving on the cycle track for outdoor and indoor velodromes...
2016: Sensors
Andrew J Callaway, Johanna Wiedlack, Mario Heller
The purpose of this study was to investigate the temporal phases of the archery shot cycle that distinguish the arrows distance from centre, in an attempt to understand critical factors that affect performance. Fifteen archers of varying ability each performed 30 shots at 18 m. Fourteen potential predictor variables were measured for statistical modelling by stepwise multiple linear regression. The results show that pre-shot time (pre-performance routine), follow-through time (post-performance routine), aiming time, speed of the arrow and the %variation in clicker-release time, account for 7...
August 3, 2016: Journal of Sports Sciences
Muhammad Zaffar Hashmi, Jingyu Zhang, Binglu Li, Xiaomei Su, Muhammad Tariq, Najid Ahmad, Riffat Naseem Malik, Kalim Ullah, Chen Chen, Chaofeng Shen
Polychlorinated biphenyls (PCBs) are a group of chemicals that persist in the environment, indoors, and humans. Lung exposure to airborne and food contaminants, such as PCBs, may cause possible lung disorders, such as cancer. In the present study, we investigated the effects of structurally different lower chlorinated (≤4Cl), noncoplanar PCB40, and coplanar PCB77 on human lung fibroblast cell line (HELF) cell proliferation, cell cycle progression, and possible molecular mechanisms. Noncoplanar PCB40 and coplanar PCB77 exhibited concentration- and time-dependent biphasic dose-response effects on HELF cell proliferation...
July 27, 2016: Environmental Toxicology
A Rodriguez-Aurrekoetxea, I Estevez
The aim of this study was to explore the factors influencing patterns of space use of commercial free-range laying hens and their relation to welfare indicators. Three free-range laying hen flocks were studied during one production cycle by collecting spatial locations on 150 individually tagged hens per flock. At the end of production, welfare and morphometric measures were collected. The results indicated that use of the outdoor area was lower during midday (P < 0.05), but remained stable across age periods (P > 0...
November 1, 2016: Poultry Science
Benedikt Fasel, Caroline Praz, Bengt Kayser, Kamiar Aminian
In this study an algorithm designed for the diagonal stride in classical cross-country skiing was adapted to compute spatio-temporal parameters for uphill ski mountaineering using a ski fixed inertial sensor. Cycle duration, thrust duration, cycle speed, cycle distance, elevation gain, and slope angle were computed and validated against a marker-based motion capture system during indoor treadmill skiing. Skiing movement of 12 experienced, recreational level athletes was measured for nine different speed and slope angle combinations...
June 23, 2016: Journal of Biomechanics
Rajib Chowdhury, Vijay Kumar, Dinesh Mondal, Murari Lal Das, Pradeep Das, Aditya Prasad Dash, Axel Kroeger
BACKGROUND: Visceral leishmaniasis (VL), also known as kala-azar in the Indian sub-continent (ISC), is a major public health concern in Bangladesh, India, and Nepal, where it is caused by Leishmania donovani transmitted by the sand fly Phlebotomus argentipes. Various ecological parameters including air temperature, rainfall, wind speed, relative humidity, soil moisture, pH, and organic carbon are known to influence the oviposition of female sand flies, as well as the survival and development of larvae...
May 2016: Pathogens and Global Health
Y H Kim, Y R Ham, K R Na, K W Lee, D E Choi
BACKGROUND: 'Spinning' is an indoor cycling regimen. The number of case reports of spinning-induced rhabdomyolysis (SIR) has increased since 2004 in South Korea. AIM: The aim of this study is to evaluate the clinical characteristics of SIR and compare it with other causes of rhabdomyolysis. METHODS: Patients who were diagnosed with rhabdomyolysis from 1 September 2011 to 30 April 2015 were included. We analysed the incidence of rhabdomyolysis, biochemical parameters and forced hospitalisation, which was defined as the days from admission to creatinine phosphokinase < 2000 IU/L...
September 2016: Internal Medicine Journal
Feng Chen, Shengwei Liu, Jiaguo Yu
Removing formaldehyde (HCHO) in air by efficient and recyclable adsorbents is crucial for improving indoor air quality. Nanosized adsorbents with a higher surface area and abundant functional groups are highly desirable. In this report, hierarchical titanate nanospheres (HTS) were prepared as effective adsorbents by the diethylenetriamine (DETA) mediated one-pot solvothermal process. Typically, the HTS adsorbents were assembled by titanate nanosheets with abundant in situ grafted amine groups. Impressively, because of their hierarchical assembled structure, considerable specific surface area and pore volume, and abundant surface amine groups, the optimized HTS adsorbents exhibited excellent HCHO adsorption properties, with nearly 100% removal efficiency for HCHO in air at room temperature...
July 21, 2016: Physical Chemistry Chemical Physics: PCCP
Peter Fantke, Alexi S Ernstoff, Lei Huang, Susan A Csiszar, Olivier Jolliet
Humans can be exposed to chemicals in consumer products through product use and environmental emissions over the product life cycle. Exposure pathways are often complex, where chemicals can transfer directly from products to humans during use or exchange between various indoor and outdoor compartments until sub-fractions reach humans. To consistently evaluate exposure pathways along product life cycles, a flexible mass balance-based assessment framework is presented structuring multimedia chemical transfers in a matrix of direct inter-compartmental transfer fractions...
September 2016: Environment International
N Ntoumanis, C Thøgersen-Ntoumani, E Quested, J Hancox
Drawing from self-determination theory (Deci & Ryan, 2002), we developed and tested an intervention to train fitness instructors to adopt a motivationally adaptive communication style when interacting with exercisers. This was a parallel group, two-arm quasi-experimental design. Participants in the intervention arm were 29 indoor cycling instructors (n = 10 for the control arm) and 246 class members (n = 75 for the control arm). The intervention consisted of face-to-face workshops, education/information video clips, group discussions and activities, brainstorming, individual planning, and practical tasks in the cycling studio...
June 10, 2016: Scandinavian Journal of Medicine & Science in Sports
Lee P Rylands, Howard T Hurst, Simon J Roberts, Robert Graydon
The aim of the current study was to determine if a technique called 'pumping' had a significant effect on velocity production in BMX cycling. Ten National standard male BMX riders fitted with sEMG sensors completed a timed lap of an indoor BMX track using the technique of pumping, and a lap without pumping. The lap times were recorded for both trials and their surface sEMG recorded to ascertain any variation in muscle activation of the biceps brachii, triceps brachii, vastus lateralis and medial gastrocnemius...
May 28, 2016: Journal of Strength and Conditioning Research
C Scatigno, S Gaudenzi, M P Sammartino, G Visco
Roman hypogea, vernacular settlements or crypts, are underground places characterised by specific and unique challenges (RH<90% and almost constant temperature throughout the whole year) related to their relative isolation from the outdoor environment. These sites often require adequate monitoring tools providing complete environmental information in order to carry out appropriate strategies for scheduling routine maintenance and designing suitable layouts for their preservation. In this work we present the results of a carefully planned thermo-hygrometric monitoring campaign conducted in a peculiar Roman building (130CE), the "Casa di Diana" Mithraeum, sited in Ostia Antica (archaeological site, Rome-Italy), with the aim of characterising the indoor environment as the structure suffers of several conservation problems (biocolonisation, efflorescences, evaporating and condensing cycle for wall-building materials)...
October 1, 2016: Science of the Total Environment
Hernán D Argibay, M Marcela Orozco, M Victoria Cardinal, Miguel A Rinas, María Arnaiz, Carlos Mena Segura, Ricardo E Gürtler
Establishing the putative links between sylvatic and domestic transmission cycles of Trypanosoma cruzi, the etiological agent of Chagas disease, is of public health relevance. We conducted three surveys to assess T. cruzi infection in wild mammals from a rural and a preserved area in Misiones Province, Northeastern Argentina, which had recently been declared free of vector- and blood-borne transmission of human T. cruzi infection. A total of 200 wild mammals were examined by xenodiagnosis (XD) and/or polymerase chain reaction (PCR) amplification of the hyper-variable region of kinetoplast DNA minicircles of T...
September 2016: Parasitology
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