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https://www.readbyqxmd.com/read/28101712/herbicides-and-trace-metals-in-urban-waters-in-melbourne-australia-2011-12-concentrations-and-potential-impact
#1
Mayumi Allinson, Pei Zhang, AnhDuyen Bui, Jackie H Myers, Vincent Pettigrove, Gavin Rose, Scott A Salzman, Robert Walters, Graeme Allinson
Urban stormwater samples were collected from five aquatic systems in Melbourne, Australia, on six occasions between October 2011 and March 2012 and tested for 30 herbicides and 14 trace metals. Nineteen different herbicides were observed in one or more water samples from the five sites; chemicals observed at more than 40% of sites were simazine (100%), MCPA (83%), diuron (63%) and atrazine (53%). Using the toxicity unit (TU) concept to assess potential risk to aquatic ecosystems, none of the detected herbicides were considered to pose an individual, group or collective short-term risk to fish or zooplankton in the waters studied...
January 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28056908/an-evaluation-of-outdoor-school-environments-to-promote-physical-activity-in-delhi-india
#2
Samiksha Tarun, Monika Arora, Tina Rawal, Sara E Benjamin Neelon
BACKGROUND: Increasing physical activity in children is an important public health goal in India. Schools may be a target for physical activity promotion, but little is known about outdoor school environments. The purpose of this study was to describe characteristics of the surrounding outdoor school environments that may promote children's physical activity in Delhi, India. METHODS: For this cross-sectional study, we conducted a structured observation of outdoor school environments in a random sample of 16 private schools in Delhi, India using the Sport, Physical activity and Eating behavior: Environmental Determinants in Young people (SPEEDY) audit tool...
January 5, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28050921/influence-of-dietary-acid-load-on-exercise-performance
#3
Catherine Applegate, Mackenzie Mueller, Krystle E Zuniga
Diet composition can affect systemic pH and acid-base regulation, which may in turn influence exercise performance. An acidic environment in the muscle impairs performance and contributes to fatigue; therefore, current trends in sports nutrition place importance on maximizing the alkalinity of the body with ergogenic aids and dietary strategies. This review examines the evidence on the effects of dietary manipulations on acid load and exercise performance. Ten studies that investigated the effect of high versus low dietary acid loads on athletic performance generally identified that low dietary acid loads increased plasma pH, but did not consistently improve exercise performance at maximal or submaximal exercise intensities...
January 4, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28031772/the-chronotype-of-elite-athletes
#4
Michele Lastella, Gregory D Roach, Shona L Halson, Charli Sargent
The aims of this study were (i) to compare the chronotype distribution of elite athletes to a young adult population and (ii) to determine if there was a tendency for athletes to select and/or participate in sports which suited their chronotype. A total of 114 elite athletes from five sports (cricket, cycling, hockey, soccer and triathlon) participated in this study. The participants' chronotype, sleepiness, sleep satisfaction and sleep quality were determined using the Horne and Östberg Morningness and Eveningness questionnaire, the Epworth Sleepiness Scale and questions concerning their sleep satisfaction and quality...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/27997257/solid-gel-and-liquid-carbohydrate-format-effects-on-gut-comfort-and-performance
#5
Mathilde Guillochon, David S Rowlands
Carbohydrate sports drinks produce worthwhile benefits to endurance performance compared with non-caloric controls. However, athletes now consume carbohydrate in a range of formats, including gels and bars, but the comparable performance outcomes are unknown. Therefore, the aim of this study was to establish the relative effects of drink, gel, bar, and mixed carbohydrate formats on intense cycling performance. In a treatment-apparent randomised crossover design, 12 well-trained male cyclists completed 4 trials comprising a 140-min race simulation, followed by a double-blind slow-ramp to exhaustion (0...
December 20, 2016: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/27990239/towards-parameters-and-protocols-to-recommend-fes-cycling-in-cases-of-paraplegia-a-preliminary-report
#6
Juliana Araujo Guimarães, Lucas Oliveira da Fonseca, Clarissa Cardoso Dos Santos-Couto-Paz, Antônio Padilha Lanari Bó, Charles Fattal, Christine Azevedo-Coste, Emerson Fachin-Martins
Functional Electrical Stimulation assisted cycling (FES-Cycling) is increasingly becoming an alternative option recommended to people with spinal cord injury struggling with paraplegia and interested in practicing sports. In order to propose preconditions to guide FES-Cycling recommendation, we aimed to investigate some features and their potential relationships with responsiveness to Neuromuscular Electrical Stimulation (NMES). Fourteen volunteers attended a public recruitment forum to be assessed about their responsiveness through the 16-sessions of NMES...
June 13, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/27984831/-total-joint-replacement-and-return-to-sports
#7
N Oehler, T Schmidt, A Niemeier
Background: An increasing number of physically active patients not only need to know if they will basically be able to engage in sports after undergoing arthroplasty. They also would like to know whether or not they will be able to resume their preoperative activity levels. This article aims to provide an overview of recent data regarding the following questions on hip, knee and shoulder arthroplasty: (1) What is the impact of physical activity on an endoprosthesis? (2) What level of sports can be achieved after an arthroplasty procedure? (3) What types of sport are recommended for patients with an endoprosthesis? Methods: PubMed-based review of the literature...
December 2016: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/27974154/in-air-versus-underwater-comparison-of-3d-reconstruction-accuracy-using-action-sport-cameras
#8
Gustavo R D Bernardina, Pietro Cerveri, Ricardo M L Barros, João C B Marins, Amanda P Silvatti
Action sport cameras (ASC) have achieved a large consensus for recreational purposes due to ongoing cost decrease, image resolution and frame rate increase, along with plug-and-play usability. Consequently, they have been recently considered for sport gesture studies and quantitative athletic performance evaluation. In this paper, we evaluated the potential of two ASCs (GoPro Hero3+) for in-air (laboratory) and underwater (swimming pool) three-dimensional (3D) motion analysis as a function of different camera setups involving the acquisition frequency, image resolution and field of view...
January 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/27942036/determinants-of-three-year-change-in-children-s-objectively-measured-sedentary-time
#9
Andrew J Atkin, Louise Foley, Kirsten Corder, Ulf Ekelund, Esther M F van Sluijs
BACKGROUND: Sedentary behaviours (SB) are highly prevalent in young people and may be adversely associated with physical and mental health. Understanding of the modifiable determinants of SB is necessary to inform the design of behaviour change interventions but much of the existing research is cross-sectional and focussed upon screen-based behaviours. PURPOSE: To examine the social, psychological and environmental determinants of change in children's objectively measured sedentary time from age 11 to 14 years...
2016: PloS One
https://www.readbyqxmd.com/read/27918686/utility-of-surveillance-research-to-inform-physical-activity-policy-an-exemplar-from-canada
#10
Cora L Craig, Christine A Cameron, Adrian Bauman
BACKGROUND: There are several well-known risk factor monitoring systems, but few examples of comprehensive surveillance systems designed specifically to inform physical activity (PA) policy. This paper examines the utility of Canada`s Physical Activity and Sport Monitoring System in guiding policy and practice. METHODS: Indicators were determined in conjunction with government, non-governmental associations and academics. Serial measures were collected from representative population (telephone interviews, n=4,000-11,000) and setting-based (postal surveys, n=1,425-4,304) surveys...
December 5, 2016: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/27918666/quantification-of-training-and-competition-loads-in-endurance-sports-methods-and-applications
#11
Iñigo Mujika
Training quantification is basic to evaluate an endurance athlete's responses to the training loads, ensure adequate stress/recovery balance and determine the relationship between training and performance. Quantifying both external and internal workload is important, because the external workload does not measure the biological stress imposed by the exercise sessions. Generally used quantification methods include retrospective questionnaires, diaries, direct observation and physiological monitoring, often based on the measurement of oxygen uptake, heart rate and blood lactate concentration...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27900147/complex-shoulder-girdle-injuries-following-mountain-bike-accidents-and-a-review-of-the-literature
#12
Matthew Alexander Lea, Navnit Makaram, Makaram S Srinivasan
BACKGROUND: Mountain and road bike accidents are particularly common with the increased popularity of the sport. We reviewed the attendances in our emergency department over a 4-year period looking at cycling injuries to detect the level and grade of these injuries and their outcomes. METHOD: Royal Blackburn Hospital caters for a population of 550 000. A search through the Hospital information system revealed 104 patients with fractures following mountain bike injuries...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27896682/methods-of-power-force-velocity-profiling-during-sprint-running-a-narrative-review
#13
REVIEW
Matt R Cross, Matt Brughelli, Pierre Samozino, Jean-Benoit Morin
The ability of the human body to generate maximal power is linked to a host of performance outcomes and sporting success. Power-force-velocity relationships characterize limits of the neuromuscular system to produce power, and their measurement has been a common topic in research for the past century. Unfortunately, the narrative of the available literature is complex, with development occurring across a variety of methods and technology. This review focuses on the different equipment and methods used to determine mechanical characteristics of maximal exertion human sprinting...
November 28, 2016: Sports Medicine
https://www.readbyqxmd.com/read/27895075/associations-of-specific-types-of-sports-and-exercise-with-all-cause-and-cardiovascular-disease-mortality-a-cohort-study-of-80%C3%A2-306-british-adults
#14
Pekka Oja, Paul Kelly, Zeljko Pedisic, Sylvia Titze, Adrian Bauman, Charlie Foster, Mark Hamer, Melvyn Hillsdon, Emmanuel Stamatakis
BACKGROUND/AIM: Evidence for the long-term health effects of specific sport disciplines is scarce. Therefore, we examined the associations of six different types of sport/exercise with all-cause and cardiovascular disease (CVD) mortality risk in a large pooled Scottish and English population-based cohort. METHODS: Cox proportional hazards regression was used to investigate the associations between each exposure and all-cause and CVD mortality with adjustment for potential confounders in 80 306 individuals (54% women; mean±SD age: 52±14 years)...
November 28, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27882605/placebo-in-sports-nutrition-a-proof-of-principle-study-involving-caffeine-supplementation
#15
B Saunders, L F de Oliveira, R P da Silva, V de Salles Painelli, L S Gonçalves, G Yamaguchi, T Mutti, E Maciel, H Roschel, G G Artioli, B Gualano
We investigated the effects of supplement identification on exercise performance with caffeine supplementation. Forty-two trained cyclists (age 37 ± 8 years, body mass [BM] 74.3 ± 8.4 kg, height 1.76 ± 0.06 m, maximum oxygen uptake 50.0 ± 6.8 mL/kg/min) performed a ~30 min cycling time-trial 1 h following either 6 mg/kgBM caffeine (CAF) or placebo (PLA) supplementation and one control (CON) session without supplementation. Participants identified which supplement they believed they had ingested ("caffeine", "placebo", "don't know") pre- and post-exercise...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27872151/non-occupational-physical-activity-levels-of-shift-workers-compared-with-non-shift-workers
#16
Bette Loef, Gerben Hulsegge, G C Wanda Wendel-Vos, W M Monique Verschuren, Roel C H Vermeulen, Marije F Bakker, Allard J van der Beek, Karin I Proper
OBJECTIVES: Lack of physical activity (PA) has been hypothesised as an underlying mechanism in the adverse health effects of shift work. Therefore, our aim was to compare non-occupational PA levels between shift workers and non-shift workers. Furthermore, exposure-response relationships for frequency of night shifts and years of shift work regarding non-occupational PA levels were studied. METHODS: Data of 5980 non-shift workers and 532 shift workers from the European Prospective Investigation into Cancer and Nutrition-Netherlands (EPIC-NL) were used in these cross-sectional analyses...
November 21, 2016: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/27848743/is-our-youth-cycling-to-health-results-from-the-netherlands-2016-report-card-on-physical-activity-for-children-and-youth
#17
Marcella Burghard, Karlijn Knitel, Iris van Oost, Mark S Tremblay, Tim Takken
BACKGROUND: The Active Healthy Kids the Netherlands (AHKN) Report Card consolidates and translates research and assesses how the Netherlands is being responsible in providing physical activity (PA) opportunities for children and youth (<18 years). The primary aim of this article is to summarize the results of the 2016 AHKN Report Card. METHODS: Nine indicators were graded using the Active Healthy Kids Global Alliance report card development process, which includes a synthesis of the best available research, surveillance, policy and practice findings, and expert consensus...
November 2016: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/27847745/carbohydrate-electrolyte-drinks-exhibit-risks-for-human-enamel-surface-loss
#18
Mary Anne Sampaio de Melo, Vanara Florêncio Passos, Juliana Paiva Marques Lima, Sérgio Lima Santiago, Lidiany Karla Azevedo Rodrigues
OBJECTIVES: The aim of this investigation was to give insights into the impact of carbohydrate-electrolyte drinks on the likely capacity of enamel surface dissolution and the influence of human saliva exposure as a biological protective factor. MATERIALS AND METHODS: The pH, titratable acidity (TA) to pH 7.0, and buffer capacity (β) of common beverages ingested by patients under physical activity were analyzed. Then, we randomly distributed 50 specimens of human enamel into 5 groups...
November 2016: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/27847560/left-ventricular-false-tendons-and-electrocardiogram-repolarization-abnormalities-in-healthy-young-subjects
#19
Zlatan Lazarevic, Emanuela Ciminelli, Federico Quaranta, Fabio Sperandii, Emanuele Guerra, Fabio Pigozzi, Paolo Borrione
AIM: To describe echocardiographically left ventricular false tendon characteristics and the correlation with ventricular repolarization abnormalities in young athletes. METHODS: Three hundred and sixteen healthy young athletes from different sport disciplines were evaluated from 2009 to 2011 during routine screening for agonistic sports eligibility. All subjects, as part of standard pre-participation screening medical evaluation, underwent a basal and post step test 12-lead electrocardiogram (ECG)...
October 26, 2016: World Journal of Cardiology
https://www.readbyqxmd.com/read/27845472/measuring-the-expected-increase-in-cycling-in-the-city-of-milan-and-evaluating-the-positive-effects-on-the-population-s-health-status-a-community-based-urban-planning-experience
#20
A Rebecchi, L Boati, A Oppio, M Buffoli, S Capolongo
BACKGROUND: It's scientifically known that inactivity is one of the major risk factors for Non-Communicable Diseases. One of the elements affecting the choice of transport mode, regarding circulation in the city, is the cities' urban morphology, i.e. the infrastructural facilities for the slow mobility service. Cyclability, in fact, can help to increase daily physical activity level, therefore becoming a protective factor for individual health. METHODS: After a literature review about the state of the art regarding the correlation between built environment, active transport and quantification of the physical activity level, we have developed a specific questionnaire to collect information about current and forecast use of bicycle, in case of improvement and implementation of the cycling network...
November 2016: Annali di Igiene: Medicina Preventiva e di Comunità
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