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https://www.readbyqxmd.com/read/29120986/acute-capsaicin-supplementation-improves-1500-m-running-time-trial-performance-and-rate-of-perceived-exertion-in-physically-active-adults
#1
Marcelo Conrado de Freitas, Jason M Cholewa, Luis A Gobbo, João Vitor N S de Oliveira, Fabio S Lira, Fabrício E Rossi
The purpose of this study was to investigate the acute effect of capsaicin supplementation on performance, rate of perceived exertion and blood lactate concentrations during short duration running in physically active adults. Ten physically active men (age= 23.5±1.9 yrs, weight= 78.3±12.4 kg, height= 177.9±5.9 cm) completed two randomized, double-blind trials: Capsaicin condition (12 mg) or a placebo condition. Forty five minutes after supplement consumption, the participants performed a 1500 meter running time trial...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29079431/voluntary-running-enhances-glymphatic-influx-in-awake-behaving-young-mice
#2
Stephanie von Holstein-Rathlou, Nicolas Caesar Petersen, Maiken Nedergaard
Vascular pathology and protein accumulation contribute to cognitive decline, whereas exercise can slow vascular degeneration and improve cognitive function. Recent investigations suggest that glymphatic clearance measured in aged mice while anesthetized is enhanced following exercise. We predicted that exercise would also stimulate glymphatic activity in awake, young mice with higher baseline glymphatic function. Therefore, we assessed glymphatic function in young female C57BL/6J mice following five weeks voluntary wheel running and in sedentary mice...
October 25, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29037583/landmarks-for-the-preservation-of-the-middle-temporal-artery-during-mastoid-surgery-cadaveric-dissection-study
#3
Pedram Daraei, Douglas E Mattox
IMPORTANCE: The middle temporal artery flap is a vascularized periosteal flap that is highly useful for otologic reconstruction including the middle cranial fossa, mastoidectomy defect, and external auditory canal. The course of the artery is close to the external auditory canal and is easily injured during preliminary exposure and elevation of flaps. OBJECTIVES: To describe the course of the middle temporal artery in relation to the external auditory canal and the superficial temporal artery in order to enhance preservation and use in otologic reconstruction...
October 9, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/29023328/strength-and-conditioning-habits-of-competitive-distance-runners
#4
Richard C Blagrove, Nicola Brown, Glyn Howatson, Philip R Hayes
Blagrove, RC, Brown, N, Howatson, G, and Hayes, PR. Strength and conditioning habits of competitive distance runners. J Strength Cond Res XX(X): 000-000, 2017-Targeted strength and conditioning (S&C) programs can potentially improve performance and reduce injury risk factors in competitive runners. However, S&C practices of distance runners are unknown. This study aimed to explore S&C practices of competitive middle- and long-distance runners and examined whether reported frequency of injuries was influenced by training behaviors...
October 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28988513/step-to-step-spatiotemporal-variables-and-ground-reaction-forces-of-intra-individual-fastest-sprinting-in-a-single-session
#5
Ryu Nagahara, Mirai Mizutani, Akifumi Matsuo, Hiroaki Kanehisa, Tetsuo Fukunaga
We aimed to investigate the step-to-step spatiotemporal variables and ground reaction forces during the acceleration phase for characterising intra-individual fastest sprinting within a single session. Step-to-step spatiotemporal variables and ground reaction forces produced by 15 male athletes were measured over a 50-m distance during repeated (three to five) 60-m sprints using a long force platform system. Differences in measured variables between the fastest and slowest trials were examined at each step until the 22nd step using a magnitude-based inferences approach...
October 7, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28912012/the-effects-of-aerobic-exercise-on-depression-like-anxiety-like-and-cognition-like-behaviours-over-the-healthy-adult-lifespan-of-c57bl-6-mice
#6
Julie A Morgan, Gaurav Singhal, Frances Corrigan, Emily J Jaehne, Magdalene C Jawahar, Bernhard T Baune
Preclinical studies have demonstrated exercise improves various types of behaviours such as anxiety-like, depression-like, and cognition-like behaviours. However, these findings were largely conducted in studies utilising short-term exercise protocols, and the effects of lifetime exercise on these behaviours remain unknown. This study investigates the behavioural effects of lifetime exercise in normal healthy ageing C57BL/6 mice over the adult lifespan. 12 week-old C57BL/6 mice were randomly assigned to voluntary wheel running or non-exercise (control) groups...
January 30, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/28900570/running-injury-development-the-attitudes-of-middle-and-long-distance-runners-and-their-coaches
#7
Karen Krogh Johansen, Adam Hulme, Camma Damsted, Daniel Ramskov, Rasmus Oestergaard Nielsen
BACKGROUND: Behavioral science methods have rarely been used in running injury research. Therefore, the attitudes amongst runners and their coaches regarding factors leading to running injuries warrants formal investigation. PURPOSE: To investigate the attitudes of middle- and long-distance runners able to compete in national championships and their coaches about factors associated with running injury development. METHODS: A link to an online survey was distributed to middle- and long-distance runners and their coaches across 25 Danish Athletics Clubs...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28881769/middle-distance-running-acutely-influences-the-concentration-and-composition-of-serum-bile-acids-potential-implications-for-cancer-risk
#8
Elisa Danese, Gian Luca Salvagno, Cantor Tarperi, Davide Negrini, Martina Montagnana, Luca Festa, Fabian Sanchis-Gomar, Federico Schena, Giuseppe Lippi
BACKGROUND: This study was aimed to investigate the acute effect of medium-distance running on bile acids concentration and composition, in order to verify whether the positive impact of physical exercise on cancer risk may also be mediated by variation of bile acids concentration and composition in serum. METHODS: The concentration and composition of serum bile acids was analyzed in 30 middle-aged and healthy recreational athletes with a reference liquid chromatography-mass spectrometry technique, immediately before and shortly after the end of the running trial...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28859414/physiological-and-biomechanical-mechanisms-of-distance-specific-human-running-performance
#9
M A Thompson
Running events range from 60-m sprints to ultra-marathons covering 100 miles or more, which presents an interesting diversity in terms of the parameters for successful performance. Here, we review the physiological and biomechanical variations underlying elite human running performance in sprint to ultramarathon distances. Maximal running speeds observed in sprint disciplines are achieved by high vertical ground reaction forces applied over short contact times. To create this high force output, sprint events rely heavily on anaerobic metabolism, as well as a high number and large cross-sectional area of type II fibers in the leg muscles...
August 1, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28752340/importance-of-the-moskowitz-artery-in-the-laparoscopic-medial-approach-to-splenic-flexure-mobilization-a-cadaveric-study
#10
A Garcia-Granero, L Sánchez-Guillén, O Carreño, J Sancho Muriel, E Alvarez Sarrado, D Fletcher Sanfeliu, B Flor Lorente, M Frasson, F Martinez Soriano, E Garcia-Granero
BACKGROUND: The medial approach in laparoscopic splenic flexure mobilization is based on the entrance to the lesser sac just above the ventral edge of the pancreas (VEOP). The artery of Moskowitz runs through the base of the mesocolon, just above the VEOP. The aim of this study was to assess the incidence of the artery of Moskowitz, its route and its distance from the VEOP. METHODS: We performed a cadaveric study on 27 human cadavers. The vascular arcades of the splenic flexure were dissected, the number of vascular arches, and the origin and localization of its terminal anastomosis were recorded...
July 27, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28738172/impact-of-polymeric-membrane-breakage-on-drinking-water-quality-and-an-online-detection-method-of-the-breakage
#11
Qilong Wu, Zhenghua Zhang, Guodong Cao, Xihui Zhang
Polymeric membrane has been widely used for the treatment of drinking water in China, and the total treating capacity has reached up to 3.8 million m(3)/d. However, the membrane breakage found in the membrane modules in many water treatment plants resulted in an increase in turbidity and bacterial amount in the membrane permeate. In this study, a membrane module running for 3 years in a full-scale application was examined in terms of the breaking positions and the numbers of the broken fibers. It was found that most of the breaking positions were mainly on the outlet side of the module and that the distance from these points to the outlet was about 1/10-2/10 length of the membrane module...
October 15, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28695798/hippocampal-apoptosis-and-cognitive-function-in-dysbindin-1b-mice
#12
Wei Yang, Qi Xu
Objective To explore the apoptosis in the hippocampus of dysbindin-1B(+/+) mice and the behaviors of 4-month-old dysbindin-1B(+/+) mice and wild-type mice. Methods The hippocampus of dysbindin-1B(+/+) mice and corresponding wild-type mice were assessed by TUNEL assay and transmission electron microscopy. Then twelve 4-month-old male dysbindin-1B(+/+) mice and twelve wild-type mice were enrolled. The open field and T maze test were conducted to observe locomotor activity,exploratory behaviors,and spatial memory...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28678180/mph-m-aodv-m-and-dsr-m-performance-evaluation-under-jamming-attacks
#13
Carolina Del-Valle-Soto, Carlos Mex-Perera, Raul Monroy, Juan A Nolazco-Flores
In this work, we present the design of a mitigation scheme for jamming attacks integrated to the routing protocols MPH, AODV, and DSR. The resulting protocols are named MPH-M (Multi-Parent Hierarchical - Modified), AODV-M (Ad hoc On Demand Distance Vector - Modified), and DSR-M (Dynamic Source Routing - Modified). For the mitigation algorithm, if the detection algorithm running locally in each node produces a positive result then the node is isolated; second, the routing protocol adapts their paths avoiding the isolated nodes...
July 5, 2017: Sensors
https://www.readbyqxmd.com/read/28657854/differences-between-relative-and-absolute-speed-and-metabolic-thresholds-in-rugby-league
#14
Tannath J Scott, Heidi R Thornton, Macfarlane T U Scott, Ben J Dascombe, Grant M Duthie
PURPOSE: This study compared relative and absolute speed and metabolic thresholds for quantifying match output in elite rugby league. METHODS: Twenty-six professional players competing in the National Rugby League (NRL) were monitored with global positioning systems (GPS) across a rugby league season. Absolute speed [moderate-intensity running (MIRTh >3.6 m·s(-1)); high intensity running (HIRTh > 5.2 m·s(-1))] and metabolic (>20 W·kg(-1)) thresholds were compared to individualised ventilatory [first (VT1IFT), and second (VT2IFT)] thresholds estimated from the 30-15 intermittent fitness test (30-15IFT), as well as the metabolic threshold associated with VT2IFT (HPmetVT2), to examine difference in match-play demands...
June 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28477023/middle-distance-running-acutely-influences-the-concentration-and-composition-of-serum-bile-acids-potential-implications-for-cancer-risk
#15
Elisa Danese, Gian Luca Salvagno, Cantor Tarperi, Davide Negrini, Martina Montagnana, Luca Festa, Fabian Sanchis-Gomar, Federico Schena, Giuseppe Lippi
BACKGROUND: This study was aimed to investigate the acute effect of medium-distance running on bile acids concentration and composition, in order to verify whether the positive impact of physical exercise on cancer risk may also be mediated by variation of bile acids concentration and composition in serum. METHODS: The concentration and composition of serum bile acids was analyzed in 30 middle-aged and healthy recreational athletes with a reference liquid chromatography-mass spectrometry technique, immediately before and shortly after the end of the running trial...
April 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28462572/kinematics-of-the-thorax-and-pelvis-during-accelerated-sprinting
#16
Ryu Nagahara, Takeo Matsubayashi, Akifumi Matsuo, Koji Zushi
BACKGROUND: This study aimed to describe changes in thoracic and pelvic movements during the acceleration phase of maximal sprinting, and to clarify which kinematic variable relates to better accelerated sprinting performance. METHODS: Twelve male sprinters performed 60-m sprints, during which three-dimensional step-to-step changes in thoracic and pelvic angles, as well as the trunk quasi-joint angle, were obtained throughout a 50-m distance. RESULTS: The patterns of thoracic and pelvic movements were maintained throughout the entire acceleration phase, although the phase profiles of the relative movements between the thorax and pelvis in three planes differed...
April 28, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28459360/strength-training-for-middle-and-long-distance-performance-a-meta-analysis
#17
Nicolas Berryman, Inigo Mujika, Denis Arvisais, Marie Roubeix, Carl Binet, Laurent Bosquet
PURPOSE: The objective of this study was to assess the net effects of strength training on middle- and long-distance performance through a meta-analysis of the available literature. METHODS: Three databases were searched from which 28 out of 554 potential studies met all inclusion criteria. Standardized mean differences (SMDs) were calculated and weighted by the inverse of variance to calculate an overall effect and its 95% confidence interval (CI). Subgroup analyses were conducted to determine whether the strength-training intensity, duration and frequency, and population performance level, age, sex and sport were outcomes that may influence the magnitude of the effect...
May 1, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28290718/assessments-of-mechanical-stiffness-and-relationships-to-performance-determinants-in-middle-distance-runners
#18
Simon A Rogers, Chris S Whatman, Simon N Pearson, Andrew E Kilding
PURPOSE: This study aimed to examine relationships between methods of lower-limb stiffness and their associations with running economy (RE) and maximal velocity (vmax) in middle-distance (MD) runners. METHODS: Eleven highly-trained male MD runners performed a series of mechanical and physiological tests to determine maximal overground sprint speed, RE and V̇O2peak. Achilles tendon stiffness (kT) was estimated using ultrasonography during maximal isometric ankle plantarflexion...
March 14, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28270770/maximal-oxygen-uptake-is-achieved-in-hypoxia-but-not-normoxia-during-an-exhaustive-severe-intensity-run
#19
Matthew I Black, Christopher R Potter, Jo Corbett, Cain C T Clark, Stephen B Draper
Highly aerobically trained individuals are unable to achieve maximal oxygen uptake ([Formula: see text]) during exhaustive running lasting ~2 min, instead [Formula: see text] plateaus below [Formula: see text] after ~1 min. Hypoxia offers the opportunity to study the ([Formula: see text]) response to an exhaustive run relative to a hypoxia induced reduction in [Formula: see text]. The aim of this study was to explore whether there is a difference in the percentage of [Formula: see text] achieved (during a 2 min exhaustive run) in normoxia and hypoxia...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28229568/yo-yo-ir1-vs-incremental-continuous-running-test-for-prediction-of-3000-m-performance
#20
Boris Schmitz, Andreas Klose, Katrin Schelleckes, Charlotte M Jekat, Michael Krüger, Stefan-Martin Brand
BACKGROUND: This study aimed to compare physiological responses during the Yo-Yo intermittent recovery level 1 (Yo-Yo IR1) Test and an incremental continuous running field Test (ICRT) and to analyze their predictive value on 3000-m running performance. METHODS: Forty moderately trained individuals (18 females) performed the ICRT and Yo-Yo IR1 Test to exhaustion. The ICRT was performed as graded running test with an increase of 2.0 km·h-1 after each 3 min interval for lactate diagnostic...
November 2017: Journal of Sports Medicine and Physical Fitness
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