keyword
MENU ▼
Read by QxMD icon Read
search

Creatine supplementation

keyword
https://www.readbyqxmd.com/read/28096758/effects-of-acute-ingestion-of-a-pre-workout-dietary-supplement-with-and-without-p-synephrine-on-resting-energy-expenditure-cognitive-function-and-exercise-performance
#1
Y Peter Jung, Conrad P Earnest, Majid Koozehchian, Elfego Galvan, Ryan Dalton, Dillon Walker, Christopher Rasmussen, Peter S Murano, Mike Greenwood, Richard B Kreider
BACKGROUND: The purpose of this study was to examine the effects of acute ingestion of a pre-workout dietary supplement (PWS) with and without p-synephrine (S) on perceptions of readiness to perform, cognitive function, exercise performance, and markers of safety. METHODS: In a randomized, double-blind, and counterbalanced manner; 25 healthy and recreationally active male and female participants ingested a flavored maltodextrin placebo (PLA), a PWS containing beta-alanine (3 g), creatine nitrate as a salt (2 g), arginine alpha-ketoglutarate (2 g), N-Acetyl-L-Tyrosine (300 mg), caffeine (284 mg), Mucuna pruiriens extract standardized for 15% L-Dopa (15 mg), Vitamin C as Ascorbic Acid (500 mg), niacin (60 mg), folate as folic acid (50 mg), and Vitamin B12 as Methylcobalamin (70 mg) with 2 g of maltodextrin and flavoring; or, the PWS with Citrus aurantium (PWS + S) extract standardized for 30% p-synephrine (20 mg)...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28096757/effects-of-ingesting-a-pre-workout-dietary-supplement-with-and-without-synephrine-for-8%C3%A2-weeks-on-training-adaptations-in-resistance-trained-males
#2
Y Peter Jung, Conrad P Earnest, Majid Koozehchian, Minye Cho, Nick Barringer, Dillon Walker, Christopher Rasmussen, Mike Greenwood, Peter S Murano, Richard B Kreider
BACKGROUND: The purpose of this study was to examine whether ingesting a pre-workout dietary supplement (PWS) with and without synephrine (S) during training affects training responses in resistance-trained males. METHODS: Resistance-trained males (N = 80) were randomly assigned to supplement their diet in a double-blind manner with either a flavored placebo (PLA); a PWS containing beta-alanine (3 g), creatine nitrate as a salt (2 g), arginine alpha-ketoglutarate (2 g), N-Acetyl-L-Tyrosine (300 mg), caffeine (284 mg), Mucuna pruiriens extract standardized for 15% L-Dopa (15 mg), Vitamin C as Ascorbic Acid (500 mg), niacin (60 mg), folate as folic acid (50 mg), and Vitamin B12 as Methylcobalamin (70 mg); or, the PWS supplement with Citrus aurantium extract containing 20 mg of synephrine (PWS + S) once per day for 8-weeks during training...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28093797/adverse-reactions-to-dietary-supplements-containing-red-yeast-rice-assessment-of-cases-from-the-italian-surveillance-system
#3
Gabriela Mazzanti, Paola Angela Moro, Emanuel Raschi, Roberto Da Cas, Francesca Menniti-Ippolito
AIMS: Red yeast rice (RYR) is contained in dietary supplements for patients with dyslipidemia. RYR supplements contain monacolin K, which is chemically identical to lovastatin, a licensed drug with a well-known risk profile. We aim to describe the safety profile of RYR by analysing spontaneous reports of suspected adverse reactions (ARs). METHODS: Within the Italian Surveillance System of Natural Health Products, suspected ARs were collected and evaluated by a multidisciplinary group of experts to assess causality using the WHO-UMC system or the CIOMS/RUCAM score, for hepatic reactions...
January 17, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28079396/does-brain-creatine-content-rely-on-exogenous-creatine-in-healthy-youth-a-proof-of-principle-study
#4
Carlos Alberto Abujabra Merege-Filho, Maria Concepción Garcia Otaduy, Ana Lúcia de Sá-Pinto, Maira Okada de Oliveira, Lívia de Souza Gonçalves, Ana Paula Tanaka Hayashi, Hamilton Roschel, Rosa Maria Rodrigues Pereira, Clovis Artur Silva, Sonia Maria Dozzi Brucki, Claudia da Costa Leite, Bruno Gualano
It has been hypothesized that dietary creatine could influence cognitive performance by increasing brain creatine in developing individuals. This double-blind, randomized, placebo-controlled, proof-of-principle study aimed to investigate the effects of creatine supplementation on cognitive function and brain creatine content in healthy youth. The sample comprised 67 healthy participants aged 10 to 12 years. The participants were given creatine or placebo supplementation for 7 days. At baseline and after the intervention, participants undertook a battery of cognitive tests...
October 5, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28065420/effectiveness-of-dietary-supplements-in-spinal-cord-injury-subjects
#5
REVIEW
Angela Navarrete-Opazo, Pilar Cuitiño, Inés Salas
BACKGROUND: Individuals with spinal cord injury (SCI) consume more dietary supplements than the general population. However, there is limited information regarding the clinical effectiveness of dietary supplements in SCI population. OBJECTIVE: To systematically review the effectiveness of dietary supplements for the prevention or treatment of health-related conditions associated with SCI. METHODS: Randomized or non-randomized controlled clinical trials were selected, comparing the effect of any dose and form of a dietary supplement (defined by the Dietary Supplement Health and Education Act), with either no treatment, placebo, or other medication...
December 19, 2016: Disability and Health Journal
https://www.readbyqxmd.com/read/28063211/nmr-metabolomics-investigates-the-influence-of-flavonoid-enriched-rations-on-chicken-plasma
#6
Charalambos Fotakis, Dimitra Z Lantzouraki, Michael Goliomytis, Panagiotis E Simitzis, Maria Charismiadou, Stelios G Deligeorgis, Panagiotis Zoumpoulakis
The use of flavonoids as dietary supplements is well established, mainly due to their intense antioxidant and anti-inflammatory properties. In the present study, hesperidin, naringin, and vitamin E were used as additives at different concentrations in poultry rations in order to achieve meat of improved quality. NMR metabolomics was applied to chicken blood serum samples to discern whether and how the enriched rations affected the animals’ metabolic profile. Variations in the metabolic patterns according to sustenance consumption were traced by orthogonal projections to latent structures discriminant analysis (OPLS-DA) models and were attributed to specific metabolites by using S-line plots...
January 7, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28058034/retrospective-analysis-of-the-effects-of-a-highly-standardized-mixture-of-berberis-aristata-silybum-marianum-and-monacolins-k-and-ka-in-patients-with-dyslipidemia
#7
Francesco Di Pierro, Pietro Putignano, Tarcisio Ferrara, Carmela Raiola, Giuliana Rapacioli, Nicola Villanova
BACKGROUND: Berberis aristata, because of its berberine content, and Monascus purpureus fermented rice, because of the presence of monacolins (naturally derived statins), are widely investigated food-grade ingredients used to formulate cholesterol-lowering supplements. Although they are extensively used, berberine is poorly absorbed and monacolins are poorly chemically characterized, not standardized, and possibly contaminated with toxic compounds. Silymarin is reported to enhance berberine absorption, while Monakopure™-K20 (MK-20) is a highly standardized red yeast rice containing monacolins K and KA in the ratio of 1:1 but not secondary monacolins, dehydromonacolins, or citrinin...
2017: Clinical Pharmacology: Advances and Applications
https://www.readbyqxmd.com/read/28054322/creatine-loading-does-not-preserve-muscle-mass-or-strength-during-leg-immobilization-in-healthy-young-males-a-randomized-controlled-trial
#8
Evelien M P Backx, Roland Hangelbroek, Tim Snijders, Marie-Louise Verscheijden, Lex B Verdijk, Lisette C P G M de Groot, Luc J C van Loon
BACKGROUND: A short period of leg immobilization leads to rapid loss of muscle mass and strength. Creatine supplementation has been shown to increase lean body mass in active individuals and can be used to augment gains in muscle mass and strength during prolonged resistance-type exercise training. OBJECTIVE: Our objective was to investigate whether creatine loading can attenuate the loss of muscle mass and strength during short-term leg immobilization. METHODS: Healthy young men (n = 30; aged 23 ± 1 years; body mass index [BMI] 23...
January 5, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28054265/assessment-of-arsenic-trioxide-in-the-heart-of-gallus-gallus-alterations-of-oxidative-damage-parameters-inflammatory-cytokines-and-cardiac-enzymes
#9
Si-Wen Li, Xiao Sun, Ying He, Ying Guo, Hong-Jing Zhao, Zhi-Jun Hou, Ming-Wei Xing
The aim of this study was to assess the effects of arsenic trioxide (As2O3) in the chicken heart, and 72 1-day-old male Hy-line chickens were fed either a commercial diet (C group) or an arsenic supplement diet containing 7.5 mg/kg (L group), 15 mg/kg (M group), or 30 mg/kg (H group) As2O3 for 90 days. The results showed that exposure to As2O3 merely lowered (P < 0.05) the activities of catalase (CAT) and glutathione peroxidase (GSH-Px) in M and H groups at 90 days, significantly downregulated the inhibition ability of hydroxyl radicals (OH·), and upregulated (P < 0...
January 4, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28044048/dietary-supplements-and-young-teens-misinformation-and-access-provided-by-retailers
#10
Maguire Herriman, Laura Fletcher, Alexis Tchaconas, Andrew Adesman, Ruth Milanaik
BACKGROUND AND OBJECTIVE: Despite the American Academy of Pediatrics' recommendations against pediatric use of creatine and testosterone boosters, research suggests that many young teenagers take these dietary supplements. Our objective was to determine to what extent health food stores would recommend and/or sell creatine and testosterone boosters to a 15-year-old boy customer. METHODS: Research personnel posing as 15-year-old high school athletes seeking to increase muscle strength contacted 244 health food stores in the United States via telephone...
January 2, 2017: Pediatrics
https://www.readbyqxmd.com/read/28043349/effects-of-guanidinoacetic-acid-diet-supplementation-on-semen-quality-and-fertility-of-broiler-breeder-roosters
#11
Ramin Shahabi Tapeh, Mahdi Zhandi, Mojtaba Zaghari, Amir Akhlaghi
Decreased semen quality and fertility rate is a common feature in broiler breeder roosters. This decrease is associated with dysfunction of Sertoli cells and defective spermatogenesis. Guanidinoacetic acid (GAA), as a precursor of creatine, plays an important role in the proper functioning of Sertoli cells and energy metabolism in sperm. Twenty, 29-wk-old broiler breeder roosters (Ross 308) were randomly allotted to 4 treatment groups and fed diets supplemented with different levels of GAA, including 0 (GAA-0), 600 (GAA-600), 1200 (GAA-1200), and 1800 (GAA-1800) mg GAA/kg of diet for 26 successive weeks...
February 2017: Theriogenology
https://www.readbyqxmd.com/read/28019093/creatine-and-creatine-forms-intended-for-sports-nutrition
#12
REVIEW
Susanne Andres, Rainer Ziegenhagen, Iris Trefflich, Sophie Pevny, Katharina Schultrich, Hans Braun, Wilhelm Schänzer, Karen Ildico Hirsch-Ernst, Bernd Schäfer, Alfonso Lampen
Creatine is a popular ergogenic supplement in sports nutrition. Yet, supplementation of creatine occasionally caused adverse effects such as gastrointestinal complaints, muscle cramps and an increase in body weight. Creatine monohydrate has already been evaluated by different competent authorities and several have come to the conclusion that a daily intake of 3 g creatine per person is unlikely to pose safety concerns, focusing on healthy adults with exclusion of pregnant and breastfeeding women. Possible vulnerable subgroups were also discussed in relation to the safety of creatine...
December 25, 2016: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28008406/dietary-creatine-as-a-possible-novel-treatment-for-crohn-s-ileitis
#13
Abhik Roy, David Lee
Creatine, a commonly used dietary supplement, plays an important role in maintaining gut barrier function. Given that dysregulation of the intestinal epithelial barrier is a hallmark of inflammatory bowel disease, it is plausible that creatine supplementation may attenuate disease severity. We present a patient with Crohn's ileitis who responded to creatine supplementation with both symptomatic and endoscopic improvement in disease activity.
August 2016: ACG Case Reports Journal
https://www.readbyqxmd.com/read/27997529/renal-dysfunction-in-early-adulthood-following-birth-asphyxia-in-male-spiny-mice-and-its-amelioration-by-maternal-creatine-supplementation-during-pregnancy
#14
Stacey J Ellery, Domenic A LaRosa, Luise Cullen-McEwen, Russell D Brown, Rod J Snow, David W Walker, Michelle M Kett, Hayley Dickinson
BACKGROUND: Acute Kidney Injury (AKI) affects ~70% of asphyxiated newborns, and increases their risk of developing chronic kidney disease (CKD) later in life. AKI is driven by renal oxygen deprivation during asphyxia, thus we hypothesized that creatine administered antenatally would protect the kidney from the long-term effects of birth asphyxia. METHODS: Pregnant spiny mice were fed standard chow or chow supplemented with 5% creatine from 20-days gestation (mid-getstation)...
December 20, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27974950/evidence-of-a-redox-dependent-regulation-of-immune-responses-to-exercise-induced-inflammation
#15
Alexandra Sakelliou, Ioannis G Fatouros, Ioannis Athanailidis, Dimitrios Tsoukas, Athanasios Chatzinikolaou, Dimitris Draganidis, Athanasios Z Jamurtas, Christina Liacos, Ioannis Papassotiriou, Dimitrios Mandalidis, Kimon Stamatelopoulos, Meletios A Dimopoulos, Asimina Mitrakou
We used thiol-based antioxidant supplementation (n-acetylcysteine, NAC) to determine whether immune mobilisation following skeletal muscle microtrauma induced by exercise is redox-sensitive in healthy humans. According to a two-trial, double-blind, crossover, repeated measures design, 10 young men received either placebo or NAC (20 mg/kg/day) immediately after a muscle-damaging exercise protocol (300 eccentric contractions) and for eight consecutive days. Blood sampling and performance assessments were performed before exercise, after exercise, and daily throughout recovery...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27941167/protective-effects-of-dietary-selenium-and-vitamin-c-in-barium-induced-cardiotoxicity
#16
Awatef Elwej, Imen Ghorbel, Mariem Chaabane, Nejla Soudani, Rim Marrekchi, Kamel Jamoussi, Hela Mnif, Tahia Boudawara, Najiba Zeghal, Mediha Sefi
Several metals including barium (Ba) known as environmental pollutants provoke deleterious effects on human health. The present work pertains to the potential ability of selenium (Se) and/or vitamin C, used as nutritional supplements, to alleviate the toxic effects induced by barium chloride (BaCl2) in the heart of adult rats. Animals were randomly divided into seven groups of six each: group 1, serving as negative controls, received distilled water; group 2 received in their drinking water BaCl2 (67 ppm); group 3 received both Ba and Se (sodium selenite 0...
December 9, 2016: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/27940755/lysine-restriction-and-pyridoxal-phosphate-administration-in-a-nadk2-patient
#17
Frederic Tort, Olatz Ugarteburu, Maria Angeles Torres, Judit García-Villoria, Marisa Girós, Angeles Ruiz, Antonia Ribes
We report the case of a 10-year-old Spanish girl with mutations in NADK2 Prenatal central nervous system abnormalities showed ventriculomegaly, colpocephaly, and hypoplasia of the corpus callosum. At birth, axial hypotonia, uncoordinated movements, microcephaly, and generalized cerebellar atrophy were detected. Metabolic investigations revealed high lysine, lactate, and pipecolic acid levels in blood and cerebrospinal fluid. Pyruvate carboxylase and pyruvate dehydrogenase activity in fibroblasts were normal...
November 2016: Pediatrics
https://www.readbyqxmd.com/read/27935176/effects-of-alpha-lipoic-acid-supplementation-on-growth-performance-antioxidant-capacity-and-biochemical-parameters-for-ammonia-exposed-broilers
#18
Min Lu, Jie Bai, Fengxian Wei, Bin Xu, Quanyou Sun, Jie Li, Gaili Wang, Xiangfang Tang, Hongfu Zhang, Qingqiang Yin, Shaoyu Li
In order to estimate the effect of alpha-lipoic acid (LA) supplementation on relieving ammonia stress of broilers, 180 22-day-old male broilers were assigned to three groups, six replicates in each group and 10 birds per replicate. The three groups were: (1) a control group without ammonia stress; (2) exposure to 70 ppm atmospheric ammonia (AM); (3) exposure to 70 ppm atmospheric ammonia and administration of 300 mg/kg LA (AM + LA). The experimental period was 3 weeks. Results showed that average daily weight gain was increased and feed conversion ratio was decreased in the AM + LA group, compared with the AM group (P < 0...
December 9, 2016: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/27930383/effect-of-e-oj-01-on-cardiac-conditioning-in-young-exercising-adults-a-randomized-controlled-trial
#19
Robert N Girandola, Shalini Srivastava
BACKGROUND AND AIM: Cardiac health is a determinant of athletic performance. A body of data suggests that in healthy young adults, an increase in maximal cardiac output leads to an increase in endurance. Terminalia arjuna (TA) has been studied for multiple benefits in cardiovascular health although its effects as a cardioprotective ergogenic aid require further exploration. The current trial was planned to study the effect of the proprietary TA extract (E-OJ-01) on the markers of cardiac conditioning in healthy young adults...
November 29, 2016: American Journal of Therapeutics
https://www.readbyqxmd.com/read/27928217/effects-of-a-high-protein-and-omega-3-enriched-diet-with-or-without-creatine-supplementation-on-markers-of-soreness-and-inflammation-during-5-consecutive-days-of-high-volume-resistance-exercise-in-females
#20
Sara Hayward, Colin D Wilborn, Lem W Taylor, Stacie L Urbina, Jordan J Outlaw, Cliffa A Foster, Michael D Roberts
We examined if two different dietary interventions affected markers of soreness and inflammation over a 5-day high-volume resistance training protocol in females that resistance-trained 8 weeks prior. Twenty-eight females (age: 20 ± 1 yr; body mass: 63.5 ± 1.6 kg, height: 1.67 ± 0.01 m) completed 4 weeks of pre-training (weeks 1-4) followed by a subsequent 4-week training period along with a dietary intervention (weeks 5-8). Dietary interventions from weeks 5-8 included: a) no intervention (CTL, n = 10) b) a higher-protein diet supplemented with hydrolyzed whey protein (50 g/d) and omega-3 fatty acids (900 mg/d) (DI, n = 8), and c) the DI condition as well as creatine monohydrate (5 g/d) (DI+C, n = 10)...
December 2016: Journal of Sports Science & Medicine
keyword
keyword
19210
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"