keyword
MENU ▼
Read by QxMD icon Read
search

repeated bout

keyword
https://www.readbyqxmd.com/read/29324580/the-relationship-between-skating-economy-and-performance-during-a-repeated-shift-test-in-elite-and-sub-elite-ice-hockey-players
#1
Nicholas R Lamoureux, Grant R Tomkinson, Benjamin J Peterson, John S Fitzgerald
The purpose of this study was to determine the importance of skating economy to fatigue during repeated high-intensity efforts of a simulated ice hockey shift. Forty-five collegiate and Junior A male ice hockey players (aged 18-24 years) performed a continuous graded exercise test using a skate treadmill. Breath-by-breath data for oxygen consumption (V[Combining Dot Above]O2) and respiratory exchange ratio were collected and used to derive energy expenditure (EE) averaged over the final 10 seconds of each stage...
January 5, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29300141/exercise-induced-physiological-arousal-biases-attention-toward-threatening-scene-details
#2
Tad T Brunyé, Caroline R Mahoney
The present experiment examined whether physiological arousal induced by acute bouts of aerobic exercise would influence attention and memory for scenes depicting or not depicting weapons. In a repeated-measures design, participants exercised at either low or high exertion levels. During exercise, they were presented with images, some of which depicted weapons; immediately following exercise, they completed a recognition test for portions of central and peripheral scene regions. Two primary results emerged...
January 1, 2018: Psychological Reports
https://www.readbyqxmd.com/read/29297989/increased-temperature-accelerates-glycogen-synthesis-and-delays-fatigue-in-isolated-mouse-muscle-during-repeated-contractions
#3
Ester Hanya, Abram Katz
AIM: Elevated glycogen content in muscle delays fatigue during exercise. We examined if increasing muscle temperature during recovery from exercise affects glycogen synthesis and muscle performance during a subsequent bout of exercise. METHODS: Isolated mouse extensor digitorum longus muscles were stimulated electrically to perform repeated tetanic contractions until force decreased to 40% of initial at 25°C. Thereafter muscles recovered for 120 min at 25°C (control), 120 min at 35°C, or 60 min at 35°C followed by 60 min at 25°C...
January 3, 2018: Acta Physiologica
https://www.readbyqxmd.com/read/29288636/the-effect-of-aggression-i-the-increases-of-metabolic-cost-and-mobilization-of-fat-reserves-in-male-striped-hamsters
#4
Xiao-Ming Xu, Qing-Sheng Chi, Jing Cao, Zhi-Jun Zhao
Aggression can benefit individuals by enhancing their dominance and thereby their ability to acquire and retain resources that increase survival or fitness. Engaging in aggressive behavior costs energy and how animals manage their energy budget to accommodate aggression remains unclear. We conducted three experiments to examine changes in physiological, behavioral and hormonal markers indicative of energy budget in male striped hamsters subject to resident-intruder aggression tests. Body temperature, metabolic rate and serum corticosterone levels significantly increased in resident hamsters immediately after the introduction of intruders...
December 27, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/29284283/temporal-effects-of-acute-walking-exercise-on-learning-and-memory-function
#5
Eveleen Sng, Emily Frith, Paul D Loprinzi
PURPOSE: To evaluate the temporal effects of acute exercise on episodic memory. DESIGN: A quasi-experimental study. SAMPLE: Eighty-eight college students (N = 22 per group). MEASURES: Four experimental groups were evaluated, including a control group, exercising prior to memory encoding, exercising during encoding, and exercising during memory consolidation. The exercise stimulus consisted of a 15-minute moderate-intensity walk on a treadmill...
January 1, 2017: American Journal of Health Promotion: AJHP
https://www.readbyqxmd.com/read/29283689/physiological-and-physical-responses-according-to-the-game-surface-in-a-soccer-simulation-protocol
#6
Jorge Lopez-Fernandez, Javier Sánchez-Sánchez, Jorge García-Unanue, José Luis Felipe, Enrique Colino-Acevedo, Leonor Gallardo
PURPOSE: Recent studies have shown that soccer player's responses are similar on natural grass (NG) and artificial turf (AT), but they did not control the mechanical properties of these surfaces. This work aimed to analyse the influence of the game surface on amateur soccer player's physical and physiological responses using a soccer simulation protocol (SSP). METHODS: Sixteen amateur players performed three bouts of the SSP on AT and NG. The mechanical properties of both surfaces were recorded...
December 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29273705/high-intensity-exercise-acutely-increases-substantia-nigra-and-prefrontal-brain-activity-in-parkinson-s-disease
#7
Neil A Kelly, Kimberly H Wood, Jane B Allendorfer, Matthew P Ford, C Scott Bickel, Jon Marstrander, Amy W Amara, Thomas Anthony, Marcas M Bamman, Frank M Skidmore
BACKGROUND Pathologic alterations in resting-state brain activity patterns exist among individuals with Parkinson's disease (PD). Since physical exercise alters resting-state brain activity in non-PD populations and improves PD symptoms, we assessed the acute effect of exercise on resting-state brain activity in exercise-trained individuals with PD. MATERIAL AND METHODS Resting-state functional magnetic resonance imaging (fMRI) was collected twice for 17 PD participants at the conclusion of an exercise intervention...
December 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29259862/disseminated-mucormycosis-a-sinister-cause-of-neutropenic-fever-syndrome
#8
Ghazal Tansir, Neha Rastogi, Prashant Ramteke, Prabhat Kumar, Manish Soneja, Ashutosh Biswas, Sanchit Kumar, Pankaj Jorwal, Upendra Baitha
A 15 year old girl presented with complaints of prolonged fever and recurrent episodes of hemoptysis. Initial investigation showed pancytopenia and radiological imaging was suggestive of necrotizing pneumonia. Subsequently, mucor was isolated from bronchoalveolar lavage fluid, but even on appropriate medications her condition kept deteriorating. She had multiple bouts of hemoptysis and a repeat imaging of chest showed dissemination of mucormycosis to pulmonary vein and heart. Bone marrow biopsy identified acute lymphoblastic leukemia (ALL) as the cause of pancytopenia...
November 2017: Intractable & Rare Diseases Research
https://www.readbyqxmd.com/read/29249462/muscle-stem-cells-exhibit-distinct-clonal-dynamics-in-response-to-tissue-repair-and-homeostatic-aging
#9
Matthew T Tierney, Michael J Stec, Steffen Rulands, Benjamin D Simons, Alessandra Sacco
The clonal complexity of adult stem cell pools is progressively lost during homeostatic turnover in several tissues, suggesting a decrease in the number of stem cells with distinct clonal origins. The functional impact of reduced complexity on stem cell pools, and how different tissue microenvironments may contribute to such a reduction, are poorly understood. Here, we performed clonal multicolor lineage tracing of skeletal muscle stem cells (MuSCs) to address these questions. We found that MuSC clonal complexity is maintained during aging despite heterogenous reductions in proliferative capacity, allowing aged muscle to mount a clonally diverse, albeit diminished, response to injury...
November 23, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/29234916/do-acute-effects-of-exercise-on-vascular-function-predict-adaptation-to-training
#10
Ellen A Dawson, N Timothy Cable, Daniel J Green, Dick H J Thijssen
PURPOSE: No previous study has explored the importance of exercise-induced changes in vascular function to prolonged adaptations. Therefore, the purpose was to explore the within-subject relationship between the acute post-exercise change in brachial artery endothelial function (flow-mediated dilation, FMD) and the change in resting FMD after a 2-week exercise training in healthy volunteers. METHODS: Twenty one healthy, young men (24 ± 5 years) underwent assessment of brachial artery FMD using high-resolution ultrasound before and after 30-min of moderate-intensity cycle exercise (80% maximal heart rate)...
December 12, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29232314/postexercise-fructose-maltodextrin-ingestion-enhances-subsequent-endurance-capacity
#11
Ed Maunder, Tim Podlogar, Gareth A Wallis
PURPOSE: Restoring skeletal muscle and hepatic glycogen content during short-term (<6 h) recovery from prolonged exercise is pertinent for athletes seeking to maximize performance in repeated exercise bouts. Previous research suggests co-ingestion of fructose-glucose carbohydrate sources augments hepatic and has equivalent effects on skeletal muscle glycogen storage during short-term recovery from prolonged exercise compared to isocaloric glucose ingestion. The aim of the present investigation was to determine if this has a discernible effect on subsequent exercise capacity...
December 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29216288/adaptations-in-antagonist-co-activation-role-in-the-repeated-bout-effect
#12
Robert E Hight, Travis W Beck, Debra A Bemben, Christopher D Black
Eccentric exercise results in an adaptation which attenuates muscle damage from subsequent exercise-termed the "repeated-bout effect (RBE)." PURPOSE: Study examined antagonist co-activation and motor-unit recruitment strategy, assessed via dEMG, concomitant to the RBE. METHODS: Nine participants performed 5 sub-maximal isometric trapezoid (ramp-up, hold, ramp-down) contractions at force levels corresponding to 50% and 80% of maximal isometric strength (MVC). Surface EMG signals of the biceps brachii were decomposed into individual motor-unit action potential trains...
2017: PloS One
https://www.readbyqxmd.com/read/29215198/inflammatory-signalling-regulates-eccentric-contraction-induced-protein-synthesis-in-cachectic-skeletal-muscle
#13
Justin P Hardee, Brittany R Counts, Song Gao, Brandon N VanderVeen, Dennis K Fix, Ho-Jin Koh, James A Carson
BACKGROUND: Skeletal muscle responds to eccentric contractions (ECC) with an anabolic response that involves the induction of protein synthesis through the mechanistic target of rapamycin complex 1. While we have reported that repeated ECC bouts after cachexia initiation attenuated muscle mass loss and inflammatory signalling, cachectic muscle's capacity to induce protein synthesis in response to ECC has not been determined. Therefore, we examined cachectic muscle's ability to induce mechano-sensitive pathways and protein synthesis in response to an anabolic stimulus involving ECC and determined the role of muscle signal transducer and activator of transcription 3 (STAT3)/nuclear factor kappa-light-chain-enhancer of activated B cells (NFκB) signalling on ECC-induced anabolic signalling...
December 7, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29210957/the-physiological-and-performance-effects-of-caffeine-gum-consumed-during-a-simulated-half-time-by-professional-academy-rugby-union-players
#14
Russell M, Reynolds N A, Crewther B T, Cook C J, Kilduff L
Despite the prevalence of caffeine as an ergogenic aid, few studies have examined the use of caffeinated gums, especially during half-time in team sports. The physiological (blood lactate, salivary hormone concentrations) and performance (repeated sprints, cognitive function) effects of consuming caffeine gum during a simulated half-time were examined. Professional academy rugby union players (n=14) completed this double-blind, randomized, counterbalanced study. Following pre-exercise measurements , players chewed a placebo (PL) gum for five min before a standardized warm-up and completing repeated sprint testing (RSSA1)...
November 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29208688/the-impact-of-acute-bouts-of-interval-and-continuous-walking-on-energy-intake-and-appetite-regulation-in-subjects-with-type-2-diabetes
#15
Ida A Müller, Anne-Sophie Wedell-Neergaard, Thomas P J Solomon, Kristian Karstoft
In healthy subjects, it has been suggested that exercise may acutely suppress energy-intake and appetite, with peak intensity being an important determinant for this effect. In subjects with type 2 diabetes (T2D), the effect of exercise on appetite-related variables is, however, virtually unknown. We aimed to assess the effects of two exercise interventions, differing with regards to peak intensity, on energy-intake, satiety and appetite-related hormones in subjects with T2D. Thirteen subjects with T2D completed three 60-min interventions with continuous measurement of oxygen consumption in a randomized and counterbalanced order: (1) Control, (2) Continuous walking (CW; intended 73% of VO2peak), (3) Interval-walking (IW; repeated cycles of 3 min slow [54% of VO2peak] and 3 min fast walking [89% of VO2peak])...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29201383/an-autosomal-recessive-mutation-in-scl24a4-causing-enamel-hypoplasia-in-samoyed-and-its-relationship-to-breed-wide-genetic-diversity
#16
Niels C Pedersen, Bonnie Shope, Hongwei Liu
Background: Pure breeding of dogs has led to over 700 heritable disorders, of which almost 300 are Mendelian in nature. Seventy percent of the characterized mutations have an autosomal recessive mode of inheritance, indicative of positive selection during bouts of inbreeding primarily for new desired conformational traits. Samoyed suffer from several common complex genetic disorders, but up to this time only two X-linked and one autosomal dominant disorder have been identified. Previous studies based on pedigrees and SNP arrays have concluded that Samoyed breeders have done a good job in maintaining genetic diversity and avoiding excessive inbreeding...
2017: Canine Genetics and Epidemiology
https://www.readbyqxmd.com/read/29189587/the-effect-of-cold-14-%C3%A2-c-versus-ice-5%C3%A2-c-water-immersion-on-recovery-from-intermittent-running-exercise
#17
Daniel Anderson, James Nunn, Christopher J Tyler
The purpose was to compare 14°C (CWI14°C) and 5°C (CWI5°C) cold water immersion following intermittent running. On three occasions, nine male team-sport players undertook 12 min of CWI14°C, CWI5°C or non-immersed seated recovery (CON) following 45 min of intermittent running exercise. Maximal cycling performance and markers of recovery were measured before and in the 0 - 72 h after exercise. Peak power output (PPO) was immediately reduced following all interventions (d = 1.8). CWI5°C was more effective at restoring PPO than CWI14°C (d = 0...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29187615/learning-to-starve-impacts-of-food-limitation-beyond-the-stress-period
#18
REVIEW
Marshall D McCue, John S Terblanche, Joshua B Benoit
Starvation is common among wild animal populations, and many individuals experience repeated bouts of starvation over the course of their lives. Although much information has been gained through laboratory studies of acute starvation, little is known about how starvation affects an animal once food is again available (i.e. during the refeeding and recovery phases). Many animals exhibit a curious phenomenon - some seem to 'get better' at starving following exposure to one or more starvation events - by this we mean that they exhibit potentially adaptive responses, including reduced rates of mass loss, reduced metabolic rates, and lower costs of digestion...
December 1, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29182431/impact-induced-muscle-damage-and-contact-sport-aetiology-effects-on-neuromuscular-function-and-recovery-and-the-modulating-effects-of-adaptation-and-recovery-strategies
#19
Mitchell Naughton, Joanna Miller, Gary J Slater
Athletes involved in contact-sports are habitually exposed to skeletal muscle damage as part of their training and performance environments. This often leads to exercise-induced muscle damage (EIMD) resulting from repeated eccentric and/or high-intensity exercise, and impact-induced muscle damage (IIMD) resulting from collisions with opponents and the playing surface. Whilst EIMD has been an area of extensive investigation, IIMD has received comparatively little research, with the magnitude and timeframe of alterations following IIMD not presently well understood...
November 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29182413/energetic-profile-of-the-basketball-exercise-simulation-test-in-junior-elite-players
#20
Richard Latzel, Olaf Hoos, Sebastian Stier, Sebastian Kaufmann, Volker Fresz, Dominik Reim, Ralph Beneke
PURPOSE: To analyze the energetic profile of the basketball exercise simulation test (BEST). METHODS: 10 male elite junior basketball players (age: 15.5±0.6yrs, height: 180±9cm, body mass: 66.1±11.2kg) performed a modified BEST (20 circuits consisting of jumping, sprinting, jogging, shuffling, and short breaks) simulating professional basketball game play. Circuit time, sprint time, sprint decrement, oxygen uptake (VO2), heart rate (HR), and blood lactate concentration (BLC) were obtained...
November 28, 2017: International Journal of Sports Physiology and Performance
keyword
keyword
89789
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"