keyword
MENU ▼
Read by QxMD icon Read
search

Swimming, performance

keyword
https://www.readbyqxmd.com/read/27910854/the-genetic-basis-and-fitness-consequences-of-sperm-midpiece-size-in-deer-mice
#1
Heidi S Fisher, Emily Jacobs-Palmer, Jean-Marc Lassance, Hopi E Hoekstra
An extensive array of reproductive traits varies among species, yet the genetic mechanisms that enable divergence, often over short evolutionary timescales, remain elusive. Here we examine two sister-species of Peromyscus mice with divergent mating systems. We find that the promiscuous species produces sperm with longer midpiece than the monogamous species, and midpiece size correlates positively with competitive ability and swimming performance. Using forward genetics, we identify a gene associated with midpiece length: Prkar1a, which encodes the R1α regulatory subunit of PKA...
December 2, 2016: Nature Communications
https://www.readbyqxmd.com/read/27907970/-epidemiology-etiology-and-clinical-picture-of-enteroviral-meningitis-in-children-in-south-moravia
#2
Adriana Braunová, Petra Rainetová, Lenka Krbková, Iva Čapovová, Lenka Klapačová, Václav Musil, Martin Musílek, Jana Bednářová
OBJECTIVES: Enteroviruses (EVs) are the most common cause of aseptic viral meningitis. In some cases, they can cause severe meningoencephalitis and acute flaccid paralysis - an association with some virulent serotypes. The objectives were to describe the epidemiological situation of EV meningitis in children in South Moravia, to elucidate the etiology including the incidence of virulent serotypes and to evaluate the clinical presentation. MATERIAL AND METHODS: A total of 88 children with EV meningitis were prospectively evaluated...
September 2016: Klinická Mikrobiologie a Infekc̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27906593/does-swimming-at-a-moderate-altitude-favor-a-lower-oxidative-stress-in-an-intensity-dependent-manner-role-of-nonenzymatic-antioxidants
#3
Rafael A Casuso, Jerónimo Aragón-Vela, Gracia López-Contreras, Silvana N Gomes, Cristina Casals, Yaira Barranco-Ruiz, Jordi J Mercadé, Jesus R Huertas
Casuso, Rafael A., Jerónimo Aragón-Vela, Gracia López-Contreras, Silvana N. Gomes, Cristina Casals, Yaira Barranco-Ruiz, Jordi J. Mercadé, and Jesus R. Huertas. Does swimming at a moderate altitude favor a lower oxidative stress in an intensity-dependent manner? Role of nonenzymatic antioxidants. High-Alt Med Biol. 00:000-000, 2016-we aimed to describe oxidative damage and enzymatic and nonenzymatic antioxidant responses to swimming at different intensities in hypoxia. We recruited 12 highly experienced swimmers who have been involved in competitive swimming for at least 9 years...
December 1, 2016: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/27896814/evaluation-of-swimming-performance-for-fish-passage-of-longnose-dace-rhinichthys-cataractae-using-an-experimental-flume
#4
D R Dockery, T E McMahon, K M Kappenman, M Blank
The swimming performance of longnose dace Rhinichthys cataractae, the most widely distributed minnow (Cyprinidae) in North America, was assessed in relation to potential passage barriers. The study estimated passage success, maximum ascent distances and maximum sprint speed in an open-channel flume over a range of water velocities and temperatures (10·7, 15·3 and 19·3° C). Rhinichthys cataractae had high passage success (95%) in a 9·2 m flume section at mean test velocities of 39 and 64 cm s(-1) , but success rate dropped to 66% at 78 cm s(-1) ...
November 28, 2016: Journal of Fish Biology
https://www.readbyqxmd.com/read/27882916/spirometry-improvement-after-muscular-exercise-in-elite-swimmers
#5
Alessandro Rubini, Alex Rizzato, Simone Fava, Nicola Olivato, Devanand Mangar, Enrico M Camporesi, Gerardo Bosco
BACKGROUND: An increased sympathetic activity during muscular effort is a well established physiological response, whose intensity is known to increase with the muscular load. Spirometry was described to improve as an effect of swimming training in healthy and asthmatic subjects, suggesting a decrease in airway resistance The aim was to investigate the possible effect of muscular exercise (swimming) on spirometry, in particular searching for possible differences because of different swimming times...
November 24, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27882914/propulsive-limb-coordination-and-body-acceleration-in-sprint-breaststroke-swimming
#6
Marek Strzała, Arkadiusz Stanula, Andrzej Ostrowski, Marcin Kaca, Piotr Kreżałek, Jacek Głodzik
BACKGROUND: This work is aimed at examining how coordination and kinematic indices interplay with swimming performance measured by average speed in 50m all-out test. METHODS: The group of 34 male competitive swimmers (19.1± 1.91 years old) participated in the study. The underwater movements of swimmers' bodies were recorded providing side- shots. Accelerations and angular velocity of pitch rotation of swimmer's sacrum were measured with inertial sensor device (three-axial accelerometer and gyroscope)...
November 24, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27882439/obstetric-and-perinatal-outcome-of-babies-born-from-sperm-selected-by-macs-from-a-randomized-controlled-trial
#7
Laura Romany, Nicolas Garrido, Ana Cobo, Belen Aparicio-Ruiz, Vicente Serra, Marcos Meseguer
PURPOSE: The purpose of this study is to assess outcomes after magnetic-activated cell sorting (MACS) technology on obstetric and perinatal outcomes compared with those achieved after swim up from randomized controlled trial. METHODS: This is a two-arm, unicentric, prospective, randomized, and triple-blinded trial and has a total of 237 infertile couples, between October 2010 and January 2013. A total of 65 and 66 newborns from MACS and control group, respectively, were described...
November 23, 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27882133/effects-of-forced-swimming-stress-on-thyroid-function-pituitary-thyroid-stimulating-hormone-and-hypothalamus-thyrotropin-releasing-hormone-expression-in-adrenalectomy-wistar-rats
#8
Qiuyan Sun, Aihua Liu, Yanan Ma, Anyi Wang, Xinhong Guo, Weiping Teng, Yaqiu Jiang
In order to study the impact that is imposed on the hypothalamic-pituitary-thyroid (HPT) axis of adrenalectomy male Wistar rats by stress caused by swimming, the blood level of triiodothyronine (T3), thyroxine (T4) and thyroid-stimulating hormone (TSH), the expression of TSHβ mRNA at the pituitary and thyrotropin releasing hormone (TRH) expression at the paraventricular nucleus (PVN) were measured. A total of 50 male Wistar rats of 6-8 weeks of age and with an average weight of 190-210 grams were randomly divided into the following two groups: The surgical (without adrenal glands) and non-surgical (adrenalectomy) group...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27880842/a-new-morphological-type-of-volvox-from-japanese-large-lakes-and-recent-divergence-of-this-type-and-v-ferrisii-in-two-different-freshwater-habitats
#9
Hisayoshi Nozaki, Noriko Ueki, Nanako Isaka, Tokiko Saigo, Kayoko Yamamoto, Ryo Matsuzaki, Fumio Takahashi, Ken-Ichi Wakabayashi, Masanobu Kawachi
Volvox sect. Volvox is characterized by having unique morphological characteristics, such as thick cytoplasmic bridges between adult somatic cells in the spheroids and spiny zygote walls. Species of this section are found from various freshwater habitats. Recently, three species of Volvox sect. Volvox originating from rice paddies and a marsh were studied taxonomically based on molecular and morphological data of cultured materials. However, taxonomic studies have not been performed on cultured materials of this section originating from large lake water bodies...
2016: PloS One
https://www.readbyqxmd.com/read/27879112/machine-learning-of-swimming-data-via-wisdom-of-crowd-and-regression-analysis
#10
Jiang Xie, Junfu Xu, Celine Nie, Qing Nie
Every performance, in an officially sanctioned meet, by a registered USA swimmer is recorded into an online database with times dating back to 1980. For the first time, statistical analysis and machine learning methods are systematically applied to 4,022,631 swim records. In this study, we investigate performance features for all strokes as a function of age and gender. The variances in performance of males and females for different ages and strokes were studied, and the correlations of performances for different ages were estimated using the Pearson correlation...
April 1, 2017: Mathematical Biosciences and Engineering: MBE
https://www.readbyqxmd.com/read/27876639/behavioral-changes-in-male-mice-fed-a-high-fat-diet-are-associated-with-il-1%C3%AE-expression-in-specific-brain-regions
#11
Camila P Almeida-Suhett, Alice Graham, Yifan Chen, Patricia Deuster
High-fat diet (HFD)-induced obesity is associated with not only increased risk of metabolic and cardiovascular diseases, but cognitive deficit, depression and anxiety disorders. Obesity also leads to low-grade peripheral inflammation, which plays a major role in the development of metabolic alterations. Previous studies suggest that obesity-associated central inflammation may underlie the development of neuropsychiatric deficits, but further research is needed to clarify this relationship. We used 36 male C57BL/6J mice to investigate whether chronic consumption of a high-fat diet leads to increased expression of interleukin-1β (IL-1β) in the hippocampus, amygdala and frontal cortex...
November 19, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27871866/effects-of-the-glun2b-nmda-receptor-antagonist-ro-25-6981-on-two-types-of-behavioral-flexibility-in-rats
#12
Emma Clark, Kristen Antoniak, Alyssandra Feniquito, Hans C Dringenberg
Recent evidence has implicated N-methyl-d-aspartate receptors (NMDARs) in several aspects of learning and behavioral flexibility in rodents. Here, we examined the effects of treatment with Ro 25-6981, a selective antagonist of NMDARs containing GluN2B subunits, on two types of behavioral flexibility in rats, spatial reversal learning and set-shifting (spatial vs. motor strategy). To examine spatial reversal learning, rats were trained to swim to a hidden platform in a water maze over four days. On the following day, the platform was moved to a new location in the maze...
November 18, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27871205/the-effects-of-two-different-swimming-training-periodization-on-physiological-parameters-at-various-exercise-intensities
#13
Vicente Javier Clemente-Suárez, Athanasios Dalamitros, João Ribeiro, Ana Sousa, Ricardo J Fernandes, J Paulo Vilas-Boas
This study analysed the effects of two different periodization strategies on physiological parameters at various exercise intensities in competitive swimmers. Seventeen athletes of both sexes were divided to two groups, the traditional periodization (TPG, n = 7) and the reverse periodization group (RPG, n = 10). Each group followed a 10-week training period based on the two different periodization strategies. Before and after training, swimming velocity (SV), energy expenditure (EE), energy cost (EC) and percentage of aerobic (%Aer) and anaerobic (%An) energy contribution to the swimming intensities corresponding to the aerobic threshold (AerT), the anaerobic threshold (AnT) and the velocity at maximal oxygen uptake (vVO2max) were measured...
November 21, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/27856265/bilateral-reverse-total-shoulder-arthroplasty-functional-outcome-and-activities-of-daily-living
#14
Ofer Levy, Joanna Walecka, George Arealis, Oren Tsvieli, Giuseppe Della Rotonda, Ruben Abraham, Ioannis Polyzois, Zac Jurkowski, Ehud Atoun
BACKGROUND: Reverse total shoulder arthroplasty (rTSA) has gained popularity in recent years, providing good shoulder elevation, yet less predictable rotations. Good rotations are crucial for performance of activities of daily living (ADLs), including personal hygiene. Concerns remain regarding bilateral rTSA over lack of rotations bilaterally and resultant difficulties with ADLs. This study examined the outcome of patients with bilateral rTSA in restoration of function and ADLs. METHODS: Data were prospectively collected for 19 patients (15 women, 4 men; 38 shoulders), with a mean age of 74...
November 15, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27853556/relations-between-morphology-buoyancy-and-energetics-of-requiem-sharks
#15
Gil Iosilevskii, Yannis P Papastamatiou
Sharks have a distinctive shape that remained practically unchanged through hundreds of millions of years of evolution. Nonetheless, there are variations of this shape that vary between and within species. We attempt to explain these variations by examining the partial derivatives of the cost of transport of a generic shark with respect to buoyancy, span and chord of its pectoral fins, length, girth and body temperature. Our analysis predicts an intricate relation between these parameters, suggesting that ectothermic species residing in cooler temperatures must either have longer pectoral fins and/or be more buoyant in order to maintain swimming performance...
October 2016: Royal Society Open Science
https://www.readbyqxmd.com/read/27853270/loss-of-nmda-receptors-in-dopamine-neurons-leads-to-the-development-of-affective-disorder-like-symptoms-in-mice
#16
Kamila Jastrzębska, Magdalena Walczak, Przemysław Eligiusz Cieślak, Łukasz Szumiec, Mateusz Turbasa, David Engblom, Tomasz Błasiak, Jan Rodriguez Parkitna
The role of changes in dopamine neuronal activity during the development of symptoms in affective disorders remains controversial. Here, we show that inactivation of NMDA receptors on dopaminergic neurons in adult mice led to the development of affective disorder-like symptoms. The loss of NMDA receptors altered activity and caused complete NMDA-insensitivity in dopamine-like neurons. Mutant mice exhibited increased immobility in the forced swim test and a decrease in social interactions. Mutation also led to reduced saccharin intake, however the preference of sweet taste was not significantly decreased...
November 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27852751/correlations-of-metabolic-rate-and-body-acceleration-in-three-species-of-coastal-sharks-under-contrasting-temperature-regimes
#17
Karissa O Lear, Nicholas M Whitney, Lauran R Brewster, Jack J Morris, Robert E Hueter, Adrian C Gleiss
The ability to produce estimates of the metabolic rate of free-ranging animals is fundamental to the study of their ecology. However, measuring the energy expenditure of animals in the field has proven difficult, especially for aquatic taxa. Accelerometry presents a means of translating metabolic rates measured in the laboratory to individuals studied in the field, pending appropriate laboratory calibrations. Such calibrations have only been performed on a few fish species to date, and only one where the effects of temperature were accounted for...
November 16, 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/27848928/maximum-relative-speeds-of-living-organisms-why-do-bacteria-perform-as-fast-as-ostriches
#18
Nicole Meyer-Vernet, Jean-Pierre Rospars
Self-locomotion is central to animal behaviour and survival. It is generally analysed by focusing on preferred speeds and gaits under particular biological and physical constraints. In the present paper we focus instead on the maximum speed and we study its order-of-magnitude scaling with body size, from bacteria to the largest terrestrial and aquatic organisms. Using data for about 460 species of various taxonomic groups, we find a maximum relative speed of the order of magnitude of ten body lengths per second over a 10(20)-fold mass range of running and swimming animals...
November 15, 2016: Physical Biology
https://www.readbyqxmd.com/read/27845293/character-of-the-changes-in-fear-motivated-declarative-memory-in-the-high-immobilization-depressive-rats
#19
N Nachkebia, M Shavgulidze, M Babilodze, E Chkhartishvili, N Rogava
Present study investigated possible differences in the learning and memory of declarative memory task in rats selected according to the differences in immobilization response that is in high immobilization "depressive" and low immobilization "non-depressive" rats. Understanding the character of learning and memory disturbances in basal conditions of animal models of depression is still very topical for more intimate definition of the pathophysiology of major depressive disorder and appropriate searching the ways of its correction...
October 2016: Georgian Medical News
https://www.readbyqxmd.com/read/27818900/construction-of-a-fish-like-robot-based-on-high-performance-graphene-pvdf-bimorph-actuation-materials
#20
Peishuang Xiao, Ningbo Yi, Tengfei Zhang, Yi Huang, Huicong Chang, Yang Yang, Ying Zhou, Yongsheng Chen
Smart actuators have many potential applications in various areas, so the development of novel actuation materials, with facile fabricating methods and excellent performances, are still urgent needs. In this work, a novel electromechanical bimorph actuator constituted by a graphene layer and a PVDF layer, is fabricated through a simple yet versatile solution approach. The bimorph actuator can deflect toward the graphene side under electrical stimulus, due to the differences in coefficient of thermal expansion between the two layers and the converse piezoelectric effect and electrostrictive property of the PVDF layer...
June 2016: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
keyword
keyword
56126
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"