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https://www.readbyqxmd.com/read/28643129/magnetohydrodynamic-voltage-recorder-for-comparing-peripheral-blood-flow
#1
Kevin J Wu, T Stan Gregory, Michael C Lastinger, Jonathan R Murrow, Zion Tsz Ho Tse
Blood flow is a clinical metric for monitoring of cardiovascular diseases but current measurements methods are costly or uncomfortable for patients. It was shown that the interaction of the magnetic field (B 0) during MRI and blood flow in the body, through the magnetohydrodynamic (MHD) effect, produce voltages (V MHD) observable through intra-MRI electrocardiography (ECG), which are correlated with regional blood flow. This study shows the reproducibility of V MHD outside the MRI and its application in a portable flow monitoring device...
June 22, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28642223/performing-high-level-sport-is-strongly-associated-with-urinary-incontinence-in-elite-athletes-a-comparative-study-of-372-elite-female-athletes-and-372-controls
#2
Alice Carvalhais, Jorge Renato Natal, Kari Bø
OBJECTIVE: To evaluate the prevalence of urinary incontinence (UI) in female elite athletes compared with controls and to investigate potential risk factors for UI among elite athletes. METHODS: This cross-sectional study included 372 elite athletes (athletes group, AG) and 372 age-matched controls (control group, CG). The median age was low (19 years) and the vast majority were nulliparous. Potential risk factors, including clinical, demographic and sports practice characteristics, were collected by using a questionnaire...
June 22, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28639035/mitigation-of-pedestrian-heat-stress-using-parasols-in-a-humid-subtropical-region
#3
Shinichi Watanabe, Jin Ishii
Concerns over heat illness have been an increasing social problem in humid subtropical regions. One measure for avoiding excessive heat stress in hot outdoor environments is the use of parasols or umbrellas. The advantage of parasols is that they are a mobile and inexpensive way to provide personal shade outdoors. The objectives of this study were to compare the wet-bulb globe temperature (WBGT) under parasols and at an unshaded point as a reference, and to quantify the reduction in WBGT from the use of parasols in a humid subtropical region...
June 21, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28634682/searching-for-the-sweet-spot-the-foot-rotation-and-parallel-engagement-of-ankle-ligaments-in-maximizing-injury-tolerance
#4
Bingbing Nie, Jason L Forman, Alexander R Mait, John-Paul Donlon, Matthew B Panzer, Richard W Kent
Ligament sprains, defined as tearing of bands of fibrous tissues within ligaments, account for a majority of injuries to the foot and ankle complex in field-based sports. External rotation of the foot is considered the primary injury mechanism of syndesmotic ankle sprains with concomitant flexion and inversion/eversion associated with particular patterns of ligament trauma. However, the influence of the magnitude and direction of loading vectors to the ankle on the in situ stress state of the ligaments has not been quantified in the literature...
June 20, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28630872/effect-of-regular-aerobic-activity-in-young-healthy-athletes-on-profile-of-endothelial-function-and-platelet-activity
#5
Katarzyna Podgórska, Arkadiusz Derkacz, Ewa Szahidewicz-Krupska, Jakub Jasiczek, Piotr Dobrowolski, Aneta Radziwon-Balicka, Robert Skomro, Andrzej Szuba, Grzegorz Mazur, Adrian Doroszko
The aim of the study was to assess the impact of regular professional sports activity on the endothelial and platelet function in young men. The studied group were 79 young men (18-40 y, 25 athletes and 54 without any regular physical activity). The nitric oxide (NO) metabolic pathway intermediates, oxidative stress markers, mediators of inflammation, and platelet aggregation were measured. Flow mediated dilation (FMD) was studied before and after intravenous 16,0 g L-arginine infusion, which was repeated after oral administration of acetylsalicylic acid (ASA-75 mg/day) for 4 days...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28630583/acute-modification-of-cardiac-autonomic-function-of-high-intensity-interval-training-in-collegiate-male-soccer-players-with-different-chronotype-a-cross-over-study
#6
Matteo Bonato, Luca Agnello, Letizia Galasso, Angela Montaruli, Eliana Roveda, Giampiero Merati, Antonio La Torre, Jacopo A Vitale
The purpose of this study was to evaluate if the time of the day (8.00 a.m. vs 8.00 p.m.) and chronotype could influence autonomic cardiac control in soccer players in relation to an acute session of high-intensity interval training. The morningness-eveningness questionnaire was administered to recruit Morning-type and Evening-type collegiate male soccer players. Therefore, 24 players (12 Morning-types and 12 Evening-types) were randomly assigned, to either morning (n = 12; age 23 ± 3 years; height 1.75 ± 0...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28629959/glycemic-control-and-muscle-damage-in-3-athletes-with-type-1-diabetes-during-a-successful-performance-in-a-relay-ultramarathon-a-case-report
#7
Taisa Belli, Denise V de Macedo, Pedro P M Scariot, Gustavo G de Araújo, Ivan G M Dos Reis, Fernanda L Lazarim, Lázaro A S Nunes, René Brenzikofer, Claudio A Gobatto
Ultramarathon races are fairly demanding and impose substantial physiological stress on healthy athletes. These competitions may thus be considerably more challenging for individuals with diabetes. This case study aims to describe glycemic control, muscle damage, inflammation, and renal function in 3 athletes with type 1 diabetes during a successful performance in a relay ultramarathon. The team completed the race in 29 hours and 28 minutes, earning third place. The total distance covered by each athlete was 68...
June 16, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28626339/effects-of-2-week-intermittent-training-in-hypobaric-hypoxia-on-the-aerobic-energy-metabolism-and-performance-of-cycling-athletes-with-disabilities
#8
Sang-Hoon Kim, Ho-Jung An, Jung-Hyun Choi, Yong-Youn Kim
[Purpose] The present study aimed at examining changes in aerobic energy metabolism and performance in cycling athletes after 2 weeks of intermittent training in a multistep hypobaric hypoxia environment. [Subjects and Methods] We also aimed at using the findings to propose an efficient training program in hypobaric hypoxia for endurance athletes with disabilities. The study participants were three cycling athletes with physical disabilities from the Korean national team (A, B, and C athletes). They underwent complex (repetition, interval, and continued) training with a roller-type cycle in a multistep hypobaric hypoxia environment (simulated altitude, 4,000 m above sea level)...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28621042/clinical-evaluation-of-anomalous-aortic-origin-of-a-coronary-artery-aaoca
#9
Silvana Molossi, Hitesh Agrawal
The clinical evaluation of patients with an anomalous aortic origin of a coronary artery (AAOCA), a congenital abnormality of the origin or course of a coronary artery that arises from the aorta, is challenging given its first presentation being sudden cardiac arrest in about half of the patients. Symptoms of chest pain, shortness of breath and syncope during exertion should be of concern in evaluating young athletes and nonathletes. The lack of abnormal signs on the physical exam and electrocardiogram further adds to the difficulty in establishing the diagnosis...
June 16, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28613407/school-mental-healthcare-services-using-internet-based-cognitive-behaviour-therapy-for-young-male-athletes-in-japan
#10
Ryo Sekizaki, Takahiro Nemoto, Naohisa Tsujino, Chieko Takano, Chie Yoshida, Taiju Yamaguchi, Naoyuki Katagiri, Yutaka Ono, Masafumi Mizuno
AIM: Preventive intervention and treatment using internet-based cognitive behaviour therapy (iCBT) can be easily administered to school students, as they are quite familiar with internet tools. This study aims to investigate the effectiveness and contribution of iCBT to mental healthcare in a school setting. METHODS: Eighty Japanese high school boys who were participating in a sports specialist course were enrolled in this study. The participants were randomly assigned to either the iCBT intervention group or the control group...
June 14, 2017: Early Intervention in Psychiatry
https://www.readbyqxmd.com/read/28604591/influence-of-hot-and-cold-environments-on-the-regulation-of-energy-balance-following-a-single-exercise-session-a-mini-review
#11
REVIEW
Keyne Charlot, Cécile Faure, Sophie Antoine-Jonville
Understanding the regulation of human food intake in response to an acute exercise session is of importance for interventions with athletes and soldiers, as well as overweight individuals. However, the influence of hot and cold environments on this crucial function for the regulation of body mass and motor performance has not been summarized. The purpose of this review was to exhaustively search the literature on the effect of ambient temperature during an exercise session on the subsequent subjective feeling of appetite, energy intake (EI) and its regulation...
June 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28601589/sharpsports-mental-health-awareness-research-project-prevalence-and-risk-factors-of-depressive-symptoms-and-life-stress-in-elite-athletes
#12
Sarah Beable, Mark Fulcher, Arier C Lee, Bruce Hamilton
OBJECTIVES: Our study aims to estimate the prevalence of symptoms of depression and daily life hassles in elite athletes. DESIGN: A cross-sectional prospective epidemiological study design. METHODS: An online anonymous survey was administered during a 2-month period from May to July 2015. Athletes 18 years of age (or older) who were members of the High Performance Sport New Zealand programme were invited to participate. Of 370 potential participants, 187 completed responses were received (51%)...
May 17, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28597618/effects-of-resistance-training-overtraining-and-early-specialization-on-youth-athletes
#13
Benjamin K Walters, Connor R Read, A Reed Estes
INTRODUCTION: In 2014, 60 million youth ages 6-18 participated in some form of generalized athletics. 3.5 million children are injured annually participating in organized sport or recreational activities. While sound physical education can decrease the burden of youth sports injuries, the median annual physical education budget of $764 for United States elementary, middle and high schools may not allow enough flexibility to apply evidenced-based guidelines. EVIDENCE ACQUISITION: The topics were selected after a careful review of the 2016 National Strength and Conditioning Association Position Statement on Long-Term Athletic Development...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28594517/adolescent-spondylolysis-management-and-return-to-play
#14
William C Warner, Rodrigo Góes Medéa de Mendonça
The most common causes of low back pain in adolescents are spondylolysis and spondylolisthesis. Mechanical factors combined with rapid growth during adolescence place stress on the spine and can result in a stress fracture. Sports that require athletes to repeatedly place the spine in hyperextension may exacerbate both spondylolysis and spondylolisthesis. Many adolescent athletes with spondylolysis or low-grade spondylolisthesis have minimal symptoms and require no treatment or alteration in activity, including sports activity...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28594506/high-risk-stress-fractures-in-elite-athletes
#15
Michael Isiah Sandlin, Andrew J Rosenbaum, Cyrus E Taghavi, Timothy P Charlton, Martin J O'Malley
Surgeons should understand common factors that predispose high-level athletes to stress injuries as well as the importance of vitamin D and specifics related to vascular supply, location of injury, biomechanics, and susceptibility factors in high-level athletes who have stress injuries. Surgeons should be aware of diagnostic- and management-based recommendations for and the outcomes of anterior tibia, medial malleolus, tarsal navicular, and proximal fifth metatarsal stress fractures in professional athletes...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28591543/influence-of-polyphenol-rich-diet-on-exercise-induced-immunomodulation-in-male-endurance-athletes
#16
Korbinian Lackermair, Johannes Scherr, Georg Waidhauser, Heiko Methe, Eva Hoster, David C Nieman, Alan Hanley, Sebastian Clauss, Martin Halle, Thomas Nickel
<u>Introduction:</u> Stress is associated with increased susceptibility to infection. We investigated if the mechanism involves immunomodulation of dendritic cells and whether this can be inhibited by a polyphenol-rich diet. <u>Methods:</u> Blood samples were taken from a total of 100 male endurance athletes at five time points around a marathon run: four weeks before, during one week before, and immediately, 24hours and 72hours after. Participants were randomized into two double blinded groups...
June 7, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28589135/effect-of-lower-and-upper-body-high-intensity-training-on-genes-associated-with-cellular-stress-response
#17
Małgorzata Żychowska, Andrzej Kochanowicz, Kazimierz Kochanowicz, Jan Mieszkowski, Bartłomiej Niespodziński, Stanisław Sawczyn
This study aimed to compare the effect of upper and lower body high intensity exercise (HIE) on select gene expression in athletes. Fourteen elite male artistic gymnasts (age 20.9 ± 2.6 years; weight 68.6 ± 7.2 kg; fat free mass 63.6 ± 6.7 kg; height 1.70 ± 0.04 m) performed lower and upper body 30 s Wingate Tests (WAnTs) before and after eight weeks of specific HIIT. Two milliliters of blood was collected before and after (5, 30 min, resp.) lower and upper body WAnTs, and select gene expression was determined by PCR...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28588824/stress-fractures-in-older-athletes-a-case-report-and-literature-review
#18
André Barros, Samir Karmali, Bárbara Rosa, Ricardo Gonçalves
The incidence of stress injuries in older athletes is increasing, associated with a more active older population. The same principles apply for its prevention and treatment, but older athletes usually present a more adverse outcome. It is mandatory to raise awareness to this common, but frequently neglected pathology.
June 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28581687/adverse-life-events-cardiovascular-responses-and-sports-performance-under-pressure
#19
Lee J Moore, Tom Young, Paul Freeman, Mustafa Sarkar
Research suggests that experiencing a moderate number of adverse life events can benefit future stress responses. This study explored the relationship between adverse life (i.e., non-sport) events and cardiovascular responses to, and performance during, a pressurized sporting task. One hundred participants (64 men, 36 women; Mage = 21.94 years, SDage = 4.98) reported the number of adverse life events (e.g., serious accident or injury) they had encountered before completing a pressurized dart-throwing task during which performance was recorded...
June 5, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28578345/calcium-channel-opening-rather-than-the-release-of-atp-causes-the-apoptosis-of-osteoblasts-induced-by-overloaded-mechanical-stimulation
#20
Lu Liu, Hui Li, Ying Cui, Ruixin Li, Fan Meng, Zi Ye, Xizheng Zhang
BACKGROUND: Stress fracture is one of the most common overuse injuries in athletes. Overloaded mechanical stimulation is an important factor affecting stress fractures, but the mechanism is unclear. METHODS: MC3T3-E1 cells and a polycaprolactone (PCL) scaffold were co-cultured, and finite element analysis (FEA) was used to analyze the load-carrying capability. Cell proliferation was investigated with CCK-8 assays. An alkaline phosphatase (AKP) activity assay was used to evaluate cell differentiation...
June 5, 2017: Cellular Physiology and Biochemistry
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