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Swimming and fatigue

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https://www.readbyqxmd.com/read/28684277/nlrp3-inflammasome-activation-mediates-fatigue-like-behaviors-in-mice-via-neuroinflammation
#1
Ziteng Zhang, Xiujuan Ma, Zhenna Xia, Jikuai Chen, Yangang Liu, Yongchun Chen, Jiangbo Zhu, Jinfeng Li, Huaiyu Yu, Ying Zong, Guocai Lu
Numerous experimental and clinical studies have suggested that the interaction between the immune system and the brain plays an important role in the pathophysiology of chronic fatigue syndrome (CFS). The NLRP3 inflammasome is an important part of the innate immune system. This complex regulates proinflammatory cytokine interleukin-1β (IL-1β) maturation, which triggers different kinds of immune-inflammatory reactions. We employed repeated forced swims to establish a model of CFS in mice. NLRP3 knockout (KO) mice were also used to explore NLRP3 inflammasome activation in the mechanisms of CFS, using the same treatment...
July 3, 2017: Neuroscience
https://www.readbyqxmd.com/read/28675237/ursolic-acid-induces-mitochondrial-biogenesis-through-the-activation-of-ampk-and-pgc-1-in-c2c12-myotubes-a-possible-mechanism-underlying-its-beneficial-effect-on-exercise-endurance
#2
Jihang Chen, Hoi Shan Wong, Pou Kuan Leong, Hoi Yan Leung, Wing Man Chan, Kam Ming Ko
Mitochondrial biogenesis, which involves an increase in mitochondrial number and the overall capacity of oxidative phosphorylation, is a critical determinant of skeletal muscle function. Recent findings have shown that some natural products can enhance mitochondrial adaptation to aerobic exercise, which in turn improves exercise performance, presumably by delaying muscle fatigue. Ursolic acid (UA), a natural triterpene, is commonly found in various vegetables and fruits. In the current study, UA was shown to increase mitochondrial mass and ATP generation capacity, with a concomitant production of a low level of mitochondrial reactive oxygen species (ROS) in C2C12 myotubes...
July 19, 2017: Food & Function
https://www.readbyqxmd.com/read/28659748/anti-fatigue-effects-of-dietary-nucleotides-in-mice
#3
Meihong Xu, Rui Liang, Yong Li, Junbo Wang
As the building blocks of nucleic acids, nucleotides are conditionally essential nutrients that exhibit multifaceted activities. The present study aimed to evaluate the anti-fatigue effects of dietary nucleotides (NTs) on mice and explore the possible underlying mechanism. Mice were randomly divided into four experimental sets to detect different indicators. Each set of mice was then divided into four groups: (i) one control group and (ii) three NTs groups, which were fed diets supplemented with NTs at concentrations of 0%, 0...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28659745/protective-effects-of-tea-polyphenols-on-exhaustive-exercise-induced-fatigue-inflammation-and-tissue-damage
#4
Lixia Liu, Xiuqin Wu, Bingchen Zhang, Wei Yang, Daliang Li, Yanqiu Dong, Yujiao Yin, Qi Chen
Background: The beneficial properties of tea polyphenols have been extensively studied; however, less attention has been paid to their effects, especially anti-inflammatory effect during exhaustive exercise. Objective: The present study assessed the potential protective effects of tea polyphenols against the fatigue, inflammation and tissue injury caused by an exhaustive exercise bout in rats. Design: Twenty-four healthy male rats were divided into three groups. Group C was a sedentary control group, Groups E+TP and Group E performed a single exhaustive swimming test; all groups had normal diets, but Group E+TP was supplemented with tea polyphenols...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28588747/antifatigue-effect-of-luteolin-6-c-neohesperidoside-on-oxidative-stress-injury-induced-by-forced-swimming-of-rats-through-modulation-of-nrf2-are-signaling-pathways
#5
Fang-Fang Duan, Ying Guo, Jing-Wan Li, Ke Yuan
Luteolin-6-C-neohesperidoside (LN) is a flavonoid isolated from moso bamboo leaf. This study was performed to evaluate the antifatigue effect of LN on a rat model undergoing the weight-loaded forced swimming test (FST). Briefly, male Sprague-Dawley rats (20-22 weeks old) were forced to undertake exhaustive swimming every other day for 3 weeks. Each swimming session was followed by the administration of distilled water, LN (25-75 mg/kg), or ascorbic acid (100 mg/kg) 1 h later. Oral administration of LN significantly improved exercise endurance; normalized alterations in energy metabolic markers; and decreased serum lactic acid, lactate dehydrogenase, and blood urea nitrogen levels of rats that underwent FST...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28588427/evaluation-of-anti-fatigue-property-of-the-extruded-product-of-cereal-grains-mixed-with-cordyceps-militaris-on-mice
#6
Lei Zhong, Liyan Zhao, Fangmei Yang, Wenjian Yang, Yong Sun, Qiuhui Hu
BACKGROUND: Fatigue is a biological phenomenon that involves a feeling of extreme physical or mental tiredness that could potentially cause some severe chronic diseases. Recently, diet therapy has provided a new alternative to alleviate physical fatigue. In our previous study, addition of Cordyceps militaris (C. militaris) into an extruded product was shown to provide high nutrition and unique flavors; however, little is known whether this product has some scientific evidence regarding anti-fatigue property...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28578257/melatonin-supplementation-plus-exercise-behavior-ameliorate-insulin-resistance-hypertension-and-fatigue-in-a-rat-model-of-type-2-diabetes-mellitus
#7
Md Mahbubur Rahman, Han-Sol Kwon, Myung-Jin Kim, Hyeon-Kyu Go, Min-Ho Oak, Do-Hyung Kim
INTRODUCTION: The objective was to investigate the effects of melatonin and exercise on insulin resistance (IR), hypertension and fatigue syndrome in a rat model of type 2 diabetes mellitus (T2DM). MATERIALS AND METHODS: Rats were divided into 5 groups namely normal control (NC), T2DM control group (DC), diabetes plus exercise (DE), diabetes plus oral melatonin supplement (DM) and diabetes plus melatonin and exercise (DME) groups. Melatonin was administered orally 5mg/kg twice daily and 40min swimming/day 5days/week were regimented after diabetes induction...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28539729/anti-fatigue-effect-of-green-tea-polyphenols-epigallocatechin-3-gallate-egcg
#8
Yu-Song Teng, Di Wu
BACKGROUND: (-)-Epigallocatechin-3-gallate (EGCG) is the most abundant of the green tea polyphenols that exhibit a variety of bioactivities. The objective of this study was to evaluate the anti-fatigue effect of EGCG by forced swimming exercise. MATERIALS AND METHODS: The mice were divided into one control group and three EGCG-treated groups. The control group was administered with distilled water and EGCG-treated groups were administered with different dose of EGCG (50, 100, and 200 mg/kg) by oral gavage for 28 days...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28539713/content-determination-of-phenylpropanoids-and-enhancing-exercise-ability-of-effective-fractions-in-pedicularis-densispica
#9
Hongbiao Chu, Zhihua Zhang, Dong Chen, Xi Wang, Qilong Tu
BACKGROUND: Most researches were focused on chemical constituents and bioactivities of Pedicularis. However, there were a few reports on simultaneous determination of the series phenylpropanoids compounds in Pedicularis by High Performance Liquid Chromatography (HPLC). OBJECTIVE: To establish an HPLC method for simultaneous determination of salidroside, verbascoside, iso-verbascoside, leucoseptoside A, jionoside D and martynoside in Pedicularis densispica (PD), and to assess the enhancing exercise ability of effective fractions of phenylpropanoids (EFP)...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28474195/effects-of-temperature-and-fatigue-on-the-metabolism-and-swimming-capacity-of-juvenile-chinese-sturgeon-acipenser-sinensis
#10
Xi Yuan, Yi-Hong Zhou, Ying-Ping Huang, Wen-Tao Guo, David Johnson, Qing Jiang, Jin-Jie Jing, Zhi-Ying Tu
Chinese sturgeon (Acipenser sinensis) is a critically endangered species. A flume-type respirometer, with video, was used to conduct two consecutive stepped velocity tests at 10, 15, 20, and 25 °C. Extent of recovery was measured after the 60-min recovery period between trials, and the recovery ratio for critical swimming speed (U crit) averaged 91.88% across temperatures. Temperature (T) effects were determined by comparing U crit, oxygen consumption rate (MO 2), and tail beat frequency (TBF) for each temperature...
May 4, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28470361/use-of-biotechnology-devices-to-analyse-fatigue-process-in-swimming-training
#11
V J Clemente-Suárez, J J Arroyo-Toledo
The aim of the present research was to analyze the acute psycho-physiological response during a high intensity interval training (HIIT) session of trained swimmers. We analyzed blood lactate concentration, heart rate, heart rate variability (HRV), arms isometric strength, rating of perceived exertion (RPE) and cortical arousal before and after a HIIT session in 14 trained swimmers (16.2 ± 2.6 years 169.1 ± 10.2 cm 61.3 ± 9.9 kg). HIIT session consisted in: 4 × 10 m tethered swimming resting 90 s between sets, 3 min rest, 16 × 25 m maximum speed swimming resting 30 s between sets...
June 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28458274/supplementation-with-hualian-no-4-wild-bitter-gourd-momordica-charantia-linn-var-abbreviata-ser-extract-increases-anti-fatigue-activities-and-enhances-exercise-performance-in-mice
#12
Chien-Yu Hsiao, Yi-Ming Chen, Yi-Ju Hsu, Chi-Chang Huang, Hsin-Ching Sung, Sheng-Shih Chen
Hualian No. 4 wild bitter gourd (WBG) is a specific vegetable cultivated by the Hualien District Agricultural Research and Extension Station in Taiwan. WBG is commonly consumed as a vegetable and used as a popular folk medicine. However, few studies have demonstrated the effects of WBG supplementation on exercise performance, physical fatigue and the biochemical profile. The purpose of this study was to evaluate the potential beneficial effects of WBG extract on fatigue and ergogenic functions following physiological challenge...
June 29, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28444695/exercise-therapy-for-chronic-fatigue-syndrome
#13
REVIEW
Lillebeth Larun, Kjetil G Brurberg, Jan Odgaard-Jensen, Jonathan R Price
BACKGROUND: Chronic fatigue syndrome (CFS) is characterised by persistent, medically unexplained fatigue, as well as symptoms such as musculoskeletal pain, sleep disturbance, headaches and impaired concentration and short-term memory. CFS presents as a common, debilitating and serious health problem. Treatment may include physical interventions, such as exercise therapy, which was last reviewed in 2004. OBJECTIVES: The objective of this review was to determine the effects of exercise therapy (ET) for patients with CFS as compared with any other intervention or control...
April 25, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28419963/acute-toxicity-and-anti-fatigue-activity-of-polysaccharide-rich-extract-from-corn-silk
#14
He-Peng Zhao, Yang Zhang, Zhuo Liu, Jiang-Yue Chen, Song-Yan Zhang, Xiu-Dong Yang, Hong-Li Zhou
The aim of this study was to evaluate the safety and potential of PCS as the anti-fatigue functional food. PCS was prepared by water extracting-alcohol precipitating method, and its chemical compositions of monosaccharide were analyzed. Then, acute toxicity and anti-fatigue activity of PCS were evaluated. PCS is composed of Rha, Arab, Xyl, Man, Glu, and Gal, its molar ratio is 0.17: 0.30: 0.26: 0.35: 1.00: 0.57. No mortality and general symptoms of toxicity were observed in the PCS treated mice (7.5, 15, and 20g/kg body weight), the body weight and food consumption were not significantly changed compared with the normal control group...
June 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28413647/nigella-sativa-seed-extract-attenuates-the-fatigue-induced-by-exhaustive-swimming-in-rats
#15
Mahbubur Rahman, Dong Kwon Yang, Gi-Beum Kim, Sei-Jin Lee, Shang-Jin Kim
In previous studies, Nigella sativa (NS) has been studied due to its various physiological and pharmacological activities. However, evidence on the effects of NS on physical fatigue following exhaustive swimming remains limited. In the present study, the authors evaluated the potential beneficial effects of NS against the fatigue activity following exhaustive swimming. Rats were orally administered with NS extract (2 g/kg/day) for 21 days, and the anti-fatigue effect was assessed by exhaustive swimming exercise...
April 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28395669/single-swim-sessions-in-c-elegans-induce-key-features-of-mammalian-exercise
#16
Ricardo Laranjeiro, Girish Harinath, Daniel Burke, Bart P Braeckman, Monica Driscoll
BACKGROUND: Exercise exerts remarkably powerful effects on metabolism and health, with anti-disease and anti-aging outcomes. Pharmacological manipulation of exercise benefit circuits might improve the health of the sedentary and the aging populations. Still, how exercised muscle signals to induce system-wide health improvement remains poorly understood. With a long-term interest in interventions that promote animal-wide health improvement, we sought to define exercise options for Caenorhabditis elegans...
April 10, 2017: BMC Biology
https://www.readbyqxmd.com/read/28337772/anti-fatigue-activity-of-sea-cucumber-peptides-prepared-from-stichopus-japonicus-in-an-endurance-swimming-rat-model
#17
Jing Ye, Caihong Shen, Yayan Huang, Xueqin Zhang, Meitian Xiao
BACKGROUND: Sea cucumber (Stichopus japonicus) is a well-known nutritious and luxurious seafood in Asia which has attracted increasing attention because of its nutrition and bioactivities in recent years. In this study, the anti-fatigue activity of sea cucumber peptides (SCP) prepared from S. japonicus was evaluated in a load-induced endurance swimming model. RESULTS: The SCP prepared in this study was mainly made up of low-molecular-weight peptides (<2 kDa)...
March 23, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28335458/in-vitro-antioxidant-activity-and-in-vivo-anti-fatigue-effect-of-sea-horse-hippocampus-peptides
#18
Zebin Guo, Duanquan Lin, Juanjuan Guo, Yi Zhang, Baodong Zheng
This study investigated changes the in vitro antioxidant activity of Hippocampus polypeptides during enzymatic hydrolysis, including the effects of enzyme species, enzyme concentration, material-liquid ratio, hydrolysis time, pH, and temperature of the reaction system. Its in vivo anti-fatigue activity was also studied. Hippocampus peptide prepared by papain digestion exhibited the highest 1,1-diphenyl-2-picryl-hydrazyl free radical scavenging rate (71.89% ± 1.50%) and strong hydroxyl radical scavenging rate (75...
March 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28317895/upregulation-of-skeletal-muscle-pgc-1%C3%AE-through-the-elevation-of-cyclic-amp-levels-by-cyanidin-3-glucoside-enhances-exercise-performance
#19
Toshiya Matsukawa, Hideko Motojima, Yuki Sato, Shinya Takahashi, Myra O Villareal, Hiroko Isoda
Regular exercise and physical training enhance physiological capacity and improve metabolic diseases. Skeletal muscles require peroxisome proliferator-activated receptor-gamma coactivator-1α (PGC-1α) in the process of their adaptation to exercise owing to PGC-1α's ability to regulate mitochondrial biogenesis, angiogenesis, and oxidative metabolism. Cyanidin-3-glucoside (Cy3G) is a natural polyphenol and a nutraceutical factor, which has several beneficial effects on human health. Here, the effect of Cy3G on exercise performance and the underlying mechanisms involved were investigated...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28245246/oxygen-uptake-kinetics-and-energy-system-s-contribution-around-maximal-lactate-steady-state-swimming-intensity
#20
Jailton Gregório Pelarigo, Leandro Machado, Ricardo Jorge Fernandes, Camila Coelho Greco, João Paulo Vilas-Boas
The purpose of this study was to examine the oxygen uptake ([Formula: see text]) kinetics and the energy systems' contribution at 97.5, 100 and 102.5% of the maximal lactate steady state (MLSS) swimming intensity. Ten elite female swimmers performed three-to-five 30 min submaximal constant swimming bouts at imposed paces for the determination of the swimming velocity (v) at 100%MLSS based on a 7 x 200 m intermittent incremental protocol until voluntary exhaustion to find the v associated at the individual anaerobic threshold...
2017: PloS One
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