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https://www.readbyqxmd.com/read/28350715/continuous-cardiac-autonomic-and-haemodynamic-responses-to-isometric-exercise
#1
Katrina A Taylor, Jonathan D Wiles, Damian D Coleman, Rajan Sharma, Jamie M O'Driscoll
PURPOSE: Elevated arterial blood pressure (BP) is associated with autonomic dysfunction and impaired haemodynamic control mechanisms. Isometric exercise (IE) training has been demonstrated effective at reducing BP; however, the continuous cardiovascular responses during IE are underinvestigated. We hypothesized that reflex autonomic cardiovascular control is an important mediator in reducing BP. To test our hypothesis, we investigated continuous cardiac autonomic modulation and baroreceptor reflex sensitivity (BRS) in response to IE...
March 27, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28344732/autonomic-modulation-in-older-women-using-resistance-exercise-as-a-countermeasure
#2
Hayden Gerhart, Yu Lun Tai, Curtis Fennell, Xián Mayo, J Derek Kingsley
It is unclear if resistance training (RT) can be used to alter declines in autonomic modulation associated with aging. Young women (YW; range 18-25 yrs) and older women (OW; range 50-72 yrs) were compared at baseline. Only OW underwent supervised RT 2 days a week for 12-weeks. Baseline and post-training measurements included heart rate variability (HRV) and complexity (Sample Entropy) to assess autonomic modulation. The 12-weeks of RT consisted of 9 exercises performing 3 sets of 8-12 repetitions. At baseline, group differences in maximal strength, and autonomic modulation were evaluated with a one-way ANOVA with BMI as a covariate...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28344461/within-session-sequence-of-balance-and-plyometric-exercises-does-not-affect-training-adaptations-with-youth-soccer-athletes
#3
Mehdi Chaouachi, Urs Granacher, Issam Makhlouf, Raouf Hammami, David G Behm, Anis Chaouachi
The integration of balance and plyometric training has been shown to provide significant improvements in sprint, jump, agility, and other performance measures in young athletes. It is not known if a specific within session balance and plyometric exercise sequence provides more effective training adaptations. The objective of the present study was to investigate the effects of using a sequence of alternating pairs of exercises versus a block (series) of all balance exercises followed by a block of plyometric exercises on components of physical fitness such as muscle strength, power, speed, agility, and balance...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28344453/high-intensity-exercise-and-carbohydrate-supplementation-do-not-alter-plasma-visfatin
#4
Paul F Mellick, Bryan J Feger, Douglas J Oberlin, Paul G Davis, Laurie Wideman
The purpose of the study was to examine the effect of high-intensity exercise and carbohydrate supplementation (CHO) on plasma visfatin. On 2 separate days, 10 sprint-trained males (age = 26.4 ± 5.3 yr; Ht = 1.77 ± 0.03 m; Wt = 78.78 ± 9.10 kg; BF% = 13.96 ± 7.28%) completed 4, 3-min bouts of cycling at 50% mean anaerobic power, with 6 min of rest between bouts. On CHO day, subjects ingested 50g of CHO 30 min before exercise. On control day, subjects ingested a sugar-free drink (CON) 30 min before exercise...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28342562/tackling-racism-as-a-wicked-public-health-problem-enabling-allies-in-anti-racism-praxis
#5
Heather Came, Derek Griffith
Racism is a "wicked" public health problem that fuels systemic health inequities between population groups in New Zealand, the United States and elsewhere. While literature has examined racism and its effects on health, the work describing how to intervene to address racism in public health is less developed. While the notion of raising awareness of racism through socio-political education is not new, given the way racism has morphed into new narratives in health institutional settings, it has become critical to support allies to make informing efforts to address racism as a fundamental cause of health inequities...
March 16, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28342295/intraflagellar-transport-mechanisms-of-motor-action-cooperation-and-cargo-delivery
#6
REVIEW
Bram Prevo, Jonathan M Scholey, Erwin J G Peterman
Intraflagellar transport (IFT) is a form of motor-dependent cargo transport that is essential for the assembly, maintenance and length-control of cilia, which play critical roles in motility, sensory reception and signal transduction in virtually all eukaryotic cells. During IFT, anterograde kinesin-2 and retrograde IFT-dynein motors drive the bidirectional transport of IFT trains that deliver cargo, for example axoneme precursors such as tubulins as well as molecules of the signal transduction machinery, to their site of assembly within the cilium...
March 25, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28341585/the-experiences-of-last-year-student-midwives-with-high-fidelity-perinatal-simulation-training-a-qualitative-descriptive-study
#7
Joeri Vermeulen, Katrien Beeckman, Rivka Turcksin, Lies Van Winkel, Léonardo Gucciardo, Monika Laubach, Wim Peersman, Eva Swinnen
BACKGROUND: Simulation training is a powerful and evidence-based teaching method in healthcare. It allows students to develop essential competences that are often difficult to achieve during internships. High-Fidelity Perinatal Simulation exposes them to real-life scenarios in a safe environment. Although student midwives' experiences need to be considered to make the simulation training work, these have been overlooked so far. AIM: To explore the experiences of last-year student midwives with High-Fidelity Perinatal Simulation training...
March 21, 2017: Women and Birth: Journal of the Australian College of Midwives
https://www.readbyqxmd.com/read/28338599/volumetric-control-of-whole-blood-collection-in-austere-environments
#8
Michael A Meledeo, Andrew D Fisher, Grantham C Peltier, Ethan A Miles, William B Muse, Win B Kerr, Shawn C Nessen, Andrew P Cap
INTRODUCTION: Fresh whole blood transfusions are a powerful tool in prehospital care; however, the lack of equipment such as a scale in field situations frequently leads to collections being under- or overfilled, leading to complications for both patient and donor. This study describes two methods for simple, rapid control of collection bag volume: (1) a length of material to constrict the bag, and (2) folding/clamping the bag. METHOD: Whole blood collection bags were allowed to fill with saline via gravity...
March 23, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28338375/an-updated-review-of-the-applied-physiology-of-american-collegiate-football-the-physical-demands-strength-conditioning-nutritional-considerations-and-injury-characteristics-of-america-s-favourite-game
#9
Hugh H K Fullagar, Robert McCunn, Andrew Murray
Whilst there are various avenues for performance improvement within collegiate American football (AF), there is no comprehensive evaluation of the collective array of resources around performance, physical conditioning and injury and training/game characteristics to guide future research and inform practitioners. Accordingly, the aim of the present review was to provide a current examination of these areas within collegiate AF. Recent studies show that there is a wide range of body compositions and strength characteristics between players, which appear to be influenced by playing position, level of play, training history/programming and time of season...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28338371/reliability-and-seasonal-changes-of-submaximal-variables-to-evaluate-professional-cyclists
#10
Jose A Rodríguez-Marroyo, Raúl Pernía, José G Villa, Carl Foster
PURPOSE: The aim of this study was to determine the reliability and validity of several submaximal variables that can be easily obtained by monitoring cyclists' performance. METHODS: Eighteen professional cyclists participated in this study. In a first part (n=15) the test-retest reliability of HR and RPE during a progressive maximal test was measured. Derived submaximal variables based on HR, RPE and power output (PO) responses were analyzed. In a second part (n=7) the pattern of the submaximal variables according to cyclists' training status was analyzed...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28338369/dha-rich-fish-oil-increases-the-omega-3-index-and-lowers-the-oxygen-cost-of-physiologically-stressful-cycling-in-trained-individuals
#11
Lachlan Hingley, Michael J Macartney, Marc A Brown, Peter L McLennan, Gregory E Peoples
Dietary fish oil, providing docosahexaenoic acid (DHA) modulates oxygen consumption and fatigue in animal models. However, in humans predominately supplemented with high eicosapentaenoic acid (EPA), there is no evidence of endurance performance enhancement. Therefore, this study examined if DHA-rich fish oil could improve repeated bouts of physiologically stressful cycling and a subsequent time trial in a state of fatigue. Twenty-six trained males took part in a double-blind study and were supplemented with either 2x1g/day soy oil (Control) or DHA-rich tuna fish oil (Nu-Mega) (FO) (560mg DHA / 140mg eicosapentaenoic acid (EPA)) for eight weeks...
March 24, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28338355/the-potential-for-a-targeted-strength-training-programme-to-decrease-asymmetry-and-increase-performance-a-proof-of-concept-in-sprinting
#12
Scott R Brown, Erin R Feldman, Matt R Cross, Eric R Helms, Bruno Marrier, Pierre Samozino, Jean-Benoît Morin
The global application of horizontal force (FH) via hip extension is related to improvements in sprint performance (e.g. maximal velocity [vmax] and power [Pmax]). Little is known regarding the contribution of individual-leg FH and how a difference between the legs (asymmetry) might subsequently affect sprint performance. We assessed a single male athlete for pre-post outcomes of a targeted hip extension training programme on FH asymmetry and sprint performance metrics. An instrumented non-motorised treadmill was used to obtain individual-leg and global sprint kinetics and determine the athlete's strong and weak leg, with regards to the ability to produce FH while sprinting...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28332118/nutrition-and-training-influences-on-the-regulation-of-mitochondrial-adenosine-diphosphate-sensitivity-and-bioenergetics
#13
REVIEW
Graham P Holloway
Since the seminal finding almost 50 years ago that exercise training increases mitochondrial content in skeletal muscle, a considerable amount of research has been dedicated to elucidate the mechanisms inducing mitochondrial biogenesis. The discovery of peroxisome proliferator-activated receptor γ co-activator 1α as a major regulator of exercise-induced gene transcription was instrumental in beginning to understand the signals regulating this process. However, almost two decades after its discovery, our understanding of the signals inducing mitochondrial biogenesis remain poorly defined, limiting our insights into possible novel training modalities in elite athletes that can increase the oxidative potential of muscle...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28332025/endurance-aerobic-high-intensity-and-repeated-sprint-cycling-performance-is-unaffected-by-normobaric-live-high-train-low-a-double-blind-placebo-controlled-cross-over-study
#14
Jacob Bejder, Andreas Breenfeldt Andersen, Rie Buchardt, Tanja Hultengren Larsson, Niels Vidiendal Olsen, Nikolai Baastrup Nordsborg
The aim was to investigate whether 6 weeks of normobaric "Live High-Train Low" (LHTL) using altitude tents affect highly trained athletes incremental peak power, 26-km time-trial cycling performance, 3-min all-out performance, and 30-s repeated sprint ability. In a double-blinded, placebo-controlled cross-over design, seven highly trained triathletes were exposed to 6 weeks of normobaric hypoxia (LHTL) and normoxia (placebo) for 8 h/day. LHTL exposure consisted of 2 weeks at 2500 m, 2 weeks at 3000 m, and 2 weeks at 3500 m...
March 22, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28331490/ranking-of-sites-for-installation-of-hydropower-plant-using-mlp-neural-network-trained-with-ga-a-madm-approach
#15
Benjamin A Shimray, Kh Manglem Singh, Thongam Khelchandra, R K Mehta
Every energy system which we consider is an entity by itself, defined by parameters which are interrelated according to some physical laws. In recent year tremendous importance is given in research on site selection in an imprecise environment. In this context, decision making for the suitable location of power plant installation site is an issue of relevance. Environmental impact assessment is often used as a legislative requirement in site selection for decades. The purpose of this current work is to develop a model for decision makers to rank or classify various power plant projects according to multiple criteria attributes such as air quality, water quality, cost of energy delivery, ecological impact, natural hazard, and project duration...
2017: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/28331455/exploring-patient-caregiver-and-healthcare-provider-perceptions-of-caring-for-patients-with-heart-failure-what-are-the-implications
#16
Betty M Kennedy, Vijayendra Jaligam, Beverly K Conish, William D Johnson, Brian Melancon, Peter T Katzmarzyk
BACKGROUND: Heart failure (HF) is an incurable and frequently progressive disease. Symptoms of HF may impair the ability of patients to perform daily living activities. As HF progresses, patients typically increase their reliance on caregivers. The purpose of this study was to determine what roles patients and caregivers perceive and desire for themselves in managing HF and to compare and contrast these roles with those perceived by healthcare providers. METHODS: A purposive sample (60 patients, 22 caregivers, and 11 healthcare providers) was enrolled in the study...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28330449/a-cross-sectional-study-of-the-effects-of-load-carriage-on-running-characteristics-and-tibial-mechanical-stress-implications-for-stress-fracture-injuries-in-women
#17
Chun Xu, Amy Silder, Ju Zhang, Jaques Reifman, Ginu Unnikrishnan
BACKGROUND: Load carriage is associated with musculoskeletal injuries, such as stress fractures, during military basic combat training. By investigating the influence of load carriage during exercises on the kinematics and kinetics of the body and on the biomechanical responses of bones, such as the tibia, we can quantify the role of load carriage on bone health. METHODS: We conducted a cross-sectional study using an integrated musculoskeletal-finite-element model to analyze how the amount of load carriage in women affected the kinematics and kinetics of the body, as well as the tibial mechanical stress during running...
March 23, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28327987/pssmhcpan-a-novel-pssm-based-software-for-predicting-class-i-peptide-hla-binding-affinity
#18
Geng Liu, Dongli Li, Zhang Li, Si Qiu, Wenhui Li, Cheng-Chi Chao, Naibo Yang, Handong Li, Zhen Cheng, Xin Song, Le Cheng, Xiuqing Zhang, Jian Wang, Huanming Yang, Kun Ma, Yong Hou, Bo Li
Background: Predicting peptides binding affinity with human leukocyte antigen (HLA) is a crucial step in developing powerful antitumor vaccine for cancer immunotherapy. Currently available methods work quite well in predicting peptide binding affinity with HLA alleles such as HLA-A*0201, HLA-A*0101, and HLA-B*0702 in terms of sensitivity and specificity. However, quite a few types of HLA alleles that are present in majority of human populations including HLA-A*0202, HLA-A*0203, HLA-A*6802, HLA-B*5101, HLA-B*5301, HLA-B*5401 and HLA-B*5701 still cannot be predicted with satisfactory accuracy using currently available methods...
March 15, 2017: GigaScience
https://www.readbyqxmd.com/read/28327383/sigueme-technology-based-intervention-for-low-functioning-autism-to-train-skills-to-work-with-visual-signifiers-and-concepts
#19
María Vélez-Coto, María José Rodríguez-Fórtiz, María Luisa Rodriguez-Almendros, Marcelino Cabrera-Cuevas, Carlos Rodríguez-Domínguez, Tomás Ruiz-López, Ángeles Burgos-Pulido, Inmaculada Garrido-Jiménez, Juan Martos-Pérez
BACKGROUND: People with low-functioning ASD and other disabilities often find it difficult to understand the symbols traditionally used in educational materials during the learning process. Technology-based interventions are becoming increasingly common, helping children with cognitive disabilities to perform academic tasks and improve their abilities and knowledge. Such children often find it difficult to perform certain tasks contained in educational materials since they lack necessary skills such as abstract reasoning...
March 16, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28326490/virtual-reality-educational-tool-for-human-anatomy
#20
Santiago González Izard, Juan A Juanes Méndez, Pablo Ruisoto Palomera
Virtual Reality is becoming widespread in our society within very different areas, from industry to entertainment. It has many advantages in education as well, since it allows visualizing almost any object or going anywhere in a unique way. We will be focusing on medical education, and more specifically anatomy, where its use is especially interesting because it allows studying any structure of the human body by placing the user inside each one. By allowing virtual immersion in a body structure such as the interior of the cranium, stereoscopic vision goggles make these innovative teaching technologies a powerful tool for training in all areas of health sciences...
May 2017: Journal of Medical Systems
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