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Ketogenic diet performance

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https://www.readbyqxmd.com/read/28706467/ketogenic-diet-benefits-body-composition-and-well-being-but-not-performance-in-a-pilot-case-study-of-new-zealand-endurance-athletes
#1
Caryn Zinn, Matthew Wood, Mikki Williden, Simon Chatterton, Ed Maunder
BACKGROUND: Low-carbohydrate, high-fat and ketogenic diets are increasingly adopted by athletes for body composition and sports performance enhancements. However, as yet, there is no consensus on their efficacy in improving performance. There is also no comprehensive literature on athletes' experiences while undertaking this diet. The purpose of this pilot work was two-fold: i. to examine the effects of a non-calorie controlled ketogenic diet on body composition and performance outcomes of endurance athletes, and ii...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28702868/safety-and-tolerability-of-the-ketogenic-diet-used-for-the-treatment-of-refractory-childhood-epilepsy-a-systematic-review-of-published-prospective-studies
#2
REVIEW
Qian-Yun Cai, Zhong-Jie Zhou, Rong Luo, Jing Gan, Shi-Ping Li, De-Zhi Mu, Chao-Min Wan
BACKGROUND: To review the available evidence from prospective studies on the safety and tolerability of the ketogenic diet (KD) for the treatment of refractory childhood epilepsy. METHODS: A comprehensive bibliographic search was performed with the aim of retrieving prospective studies that monitored adverse effects (AEs) in children after receiving the classic or medium-chain triglyceride KD therapy for refractory epilepsy. RESULTS: A total of 45 studies were retrieved, including 7 randomized controlled trials...
July 12, 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28687854/neuroprotective-effects-of-vitamin-d-alone-or-in-combination-with-lamotrigine-against-lithium-pilocarpine-model-of-status-epilepticus-in-rats
#3
Amal M Mahfoz, Ali F Abdel-Wahab, Mohamed A Afify, Naiyer Shahzad, Ibrahim A A Ibrahim, Naser A ElSawy, Ghazi A Bamagous, Saeed S Al Ghamdi
Status epilepticus (SE) is considered one of the major serious forms of epilepsy with high mortality rate. Since the currently available antiepileptic drugs have low efficacy and high adverse effects, new more efficient and safe therapies are critically needed. There is increasing evidence supporting dietary and alternative therapies for epilepsy, including the ketogenic diet, modified Atkins diet, and omega-3 fatty acids. Recent studies have shown significant prophylactic and therapeutic potential of vitamin D (vit-D) use in many neurological disorders...
July 7, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28683591/the-ketone-metabolite-%C3%AE-hydroxybutyrate-attenuates-oxidative-stress-in-spinal-cord-injury-by-suppression-of-class-i-histone-deacetylases
#4
Qingan Zhu, Ganggang Kong, Zucheng Huang, Wei Ji, Xiaomeng Wang, Junhao Liu, Xiuhua Wu, Zhiping Huang, Rong Li
The ketone metabolite, β-hydroxybutyrate (βOHB), is reported neuroprotective after spinal cord injury (SCI) in rats, but the underlying mechanism remains unknown. The present study aims to investigate effects of βOHB on suppression of oxidative stress and inhibition of class I histone deacetylases (HDACs) in in-vivo and in-vitro models. Rats were fed with ketogenic diet (KD) or standard diet (SD) 3 weeks. A C5 hemi-contusion injury was applied to these animals on the 14th day of experiment, and spinal cord samples were harvested on the 1st, 3rd and 7th day after SCI, respectively...
July 6, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28626875/effect-of-ketogenic-diet-and-other-dietary-therapies-on-anti-epileptic-drug-concentrations-in-patients-with-epilepsy
#5
G Heo, S H Kim, M J Chang
WHAT IS KNOWN AND OBJECTIVE: The ketogenic diet (KD) is an effective high-fat, adequate-protein, low-carbohydrate diet for patients with refractory epilepsy. The aim of this study was to investigate the potential effects of the KD and other dietary therapies on the concentrations of anticonvulsants in patients with epilepsy. METHODS: Patients with epilepsy who were treated with the KD and other dietary therapies for more than 30 days with at least one measurement performed both before and during the diet were evaluated...
June 18, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28623167/the-ketogenic-diet-affects-the-social-behavior-of-young-male-rats
#6
Daniela Kasprowska-Liśkiewicz, Arkadiusz D Liśkiewicz, Marta M Nowacka-Chmielewska, Joanna Nowicka, Andrzej Małecki, Jarosław J Barski
The positive effects of the ketogenic diet (KD) on social behavior have been recently reported in patients and rodent models of autism spectrum disorder (ASD). Given the beneficial effects of the KD on epilepsy, mitochondrial function, carbohydrate metabolism, and inflammation, treatment based on the KD has the potential to reduce some of the ASD-associated symptoms, including abnormal social interactions. It is not known whether the KD influences sociability by reducing the pathological processes underlying ASD or through some independent mechanism...
June 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28620490/ketogenic-diet-predictors-of-seizure-control
#7
Nitin Agarwal, Dimitrios Arkilo, Osman Farooq, Cynthia Gillogly, Katelyn S Kavak, Arie Weinstock
BACKGROUND: The ketogenic diet is an effective non-pharmacologic treatment for medically resistant epilepsy. The aim of this study was to identify any predictors that may influence the response of ketogenic diet. METHODS: A retrospective chart review for all patients with medically resistant epilepsy was performed at a tertiary care epilepsy center from 1996 to 2012. Patient- and diet-related variables were evaluated with respect to seizure reduction at 1, 3, 6, 9 and 12-month intervals and divided into four possible outcome classes...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/28605011/use-of-the-ketogenic-diet-to-manage-refractory-epilepsy-in-cdkl5-disorder-experience-of-100-patients
#8
Zhan Lim, Kingsley Wong, Heather E Olson, Ann M Bergin, Jenny Downs, Helen Leonard
OBJECTIVE: Pathogenic variants involving the CDKL5 gene result in a severe epileptic encephalopathy, often later presenting with features similar to Rett syndrome. Cardinal features of epilepsy in the CDKL5 disorder include early onset at a median age of 6 weeks and poor response to antiepileptic drugs. The ketogenic diet (KD) was first introduced in the 1920s as a treatment option for refractory epilepsy in children. This study investigated use of the KD in the CDKL5 disorder and its influences on seizures...
June 12, 2017: Epilepsia
https://www.readbyqxmd.com/read/28599043/ketones-and-human-performance
#9
Jonathan M Scott, Patricia A Deuster
Everyone is seeking nutritional strategies that might benefit performance. One approach receiving much attention is ketones, or ketosis. Ketones are very simple compounds made of hydrogen, carbon, and oxygen, and ketosis is a metabolic state whereby the body uses predominantly ketones. Ketosis can be achieved by fasting for longer than 72 hours or by following a very lowcarbohydrate, high-fat diet (ketogenic diet) for several days to weeks. Alternatively, ketone supplements purportedly induce ketosis rapidly and do not require strict adherence to any specific type of diet; however, much of the touted benefits are anecdotal...
2017: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/28555095/nutritional-ketosis-affects-metabolism-and-behavior-in-sprague-dawley-rats-in-both-control-and-chronic-stress-environments
#10
Milene L Brownlow, Seung H Jung, Raquel J Moore, Naomi Bechmann, Ryan Jankord
Nutritional ketosis may enhance cerebral energy metabolism and has received increased interest as a way to improve or preserve performance and resilience. Most studies to date have focused on metabolic or neurological disorders while anecdotal evidence suggests that ketosis may enhance performance in the absence of underlying dysfunction. Moreover, decreased availability of glucose in the brain following stressful events is associated with impaired cognition, suggesting the need for more efficient energy sources...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28537652/efficacy-and-safety-of-very-low-calorie-ketogenic-diet-a-double-blind-randomized-crossover-study
#11
C Colica, G Merra, A Gasbarrini, A De Lorenzo, G Cioccoloni, P Gualtieri, M A Perrone, S Bernardini, V Bernardo, L Di Renzo, M Marchetti
OBJECTIVE: To verify safety respect to weight loss, cardiometabolic diseases of short-term Very low-calorie ketogenic diets (VLCKDs, <800 kcal day-1). PATIENTS AND METHODS: Randomized cross-over trial with placebo. The study had no. 2 dietary treatment (DT), conducted in two arms: (1) VLCKD1 in which 50% of protein intake is replaced with synthetic amino acids; (2) VLCKD2 with placebo. The VLCKDs (<800 kcal day-1) were different in term of protein content and quality each arm lasted three weeks (wks)...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28433617/induced-and-controlled-dietary-ketosis-as-a-regulator-of-obesity-and-metabolic-syndrome-pathologies
#12
Madeline K Gibas, Kelly J Gibas
A worsening epidemic of diabetes and its precursor, metabolic syndrome (MetS) is engulfing America. A healthy individual, with proper glucose regulation has an ability to switch between burning fat and carbohydrates. It has been suggested that signaling errors within this homeostatic system, characterized by impaired switching of substrate oxidation from glucose to fat in response to insulin, can contribute to the etiology of metabolic syndrome and occurs before the development of type II diabetes. Glucose regulation with restored insulin sensitivity facilitated through clinically regulated, benign dietary ketosis (BDK), may significantly reduce, regulate and reverse the adverse pathologies common to MetS and obesity...
March 28, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28427869/ischemic-preconditioning-with-ketogenic-diet-improves-brain-ischemic-tolerance-through-increased-extracellular-adenosine-levels-and-hypoxia-inducible-factors
#13
Qi Yang, Min Guo, Xun Wang, Yanxin Zhao, Hongyan Ding, Mei Cui, Qiang Dong
Achieving a prolonged neuroprotective state reduces brain damage and neurological dysfunction characteristic of brain ischemia. The ketogenic diet (KD) has disease-modifying effects in several neurodegenerative disorders. In this study, we fed mice with KD for three weeks and performed reversible middle cerebral artery occlusion (MCAO) in the animals. KD-fed mice had significantly reduced infarct volume, increased regional cerebral blood flow (rCBF) and extracellular adenosine levels in both ischemic and reperfusion stages...
April 18, 2017: Brain Research
https://www.readbyqxmd.com/read/28399015/the-effects-of-ketogenic-dieting-on-body-composition-strength-power-and-hormonal-profiles-in-resistance-training-males
#14
Jacob M Wilson, Ryan P Lowery, Michael D Roberts, Matthew H Sharp, Jordan M Joy, Kevin A Shields, Jeremy Partl, Jeff S Volek, Dominic D'Agostino
This study investigated the impact of an isocaloric and isonitrogenous ketogenic diet (KD) versus a traditional western diet (WD) on changes in body composition, performance, blood lipids, and hormonal profiles in resistance-trained athletes. METHODS: Twenty-five college aged men were divided into a KD or traditional WD from weeks 1-10, with a reintroduction of carbohydrates from weeks 10-11, while participating in a resistance-training program. Body composition, strength, power, and blood lipid profiles were determined at week 0, 10 and 11...
April 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28381467/hepatic-ketogenesis-induced-by-middle-cerebral-artery-occlusion-in-mice
#15
Konrad Koch, Dirk Berressem, Jan Konietzka, Anna Thinnes, Gunter P Eckert, Jochen Klein
BACKGROUND: Ketone bodies are known to substitute for glucose as brain fuel when glucose availability is low. Ketogenic diets have been described as neuroprotective. Similar data have been reported for triheptanoin, a fatty oil and anaplerotic compound. In this study, we monitored the changes of energy metabolites in liver, blood, and brain after transient brain ischemia to test for ketone body formation induced by experimental stroke. METHODS AND RESULTS: Mice were fed a standard carbohydrate-rich diet or 2 fat-rich diets, 1 enriched in triheptanoin and 1 in soybean oil...
April 5, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28379266/keto-analogues-and-amino-acids-supplementation-induces-a-decrease-of-white-blood-cell-counts-and-a-reduction-of-muscle-damage-during-intense-exercise-under-thermoneutral-conditions
#16
R C P Lima, S R A S Camerino, T C L França, D S A Rodrigues, M G S Gouveia, A Ximenes-da-Silva, A Bassini, E S Prado, L C Cameron
This study evaluated the acute effect of keto analogue and amino acid (AA-KAAA) supplementation on both white blood cell counts and the established biomarkers of muscle damage during exercise under thermoneutral conditions. Sixteen male cyclists received a ketogenic diet for two days and were divided into two equal groups: a group taking AA-KAAA (KA) or a control group (PL). The athletes performed a two hour cycling session followed by a maximum incremental test until voluntary exhaustion (VExh). Blood samples were obtained at rest and during exercise for further hematological and biochemical analyses...
April 19, 2017: Food & Function
https://www.readbyqxmd.com/read/28361745/short-term-impact-of-a-classical-ketogenic-diet-on-gut-microbiota-in-glut1-deficiency-syndrome-a-3-month-prospective-observational-study
#17
Anna Tagliabue, Cinzia Ferraris, Francesca Uggeri, Claudia Trentani, Simona Bertoli, Valentina de Giorgis, Pierangelo Veggiotti, Marina Elli
BACKGROUND&AIMS: The classical ketogenic diet (KD) is a high-fat, very low-carbohydrate normocaloric diet used for drug-resistant epilepsy and Glucose Transporter 1 Deficiency Syndrome (GLUT1 DS). In animal models, high fat diet induces large alterations in microbiota producing deleterious effects on gut health. We carried out a pilot study on patients treated with KD comparing their microbiota composition before and after three months on the diet. METHODS: Six patients affected by GLUT1 DS were asked to collect fecal samples before and after three months on the diet...
February 2017: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28239404/impact-of-a-6-week-non-energy-restricted-ketogenic-diet-on-physical-fitness-body-composition-and-biochemical-parameters-in-healthy-adults
#18
Paul Urbain, Lena Strom, Lena Morawski, Anja Wehrle, Peter Deibert, Hartmut Bertz
BACKGROUND: The ketogenic diet (KD) is a very low-carbohydrate, high-fat and adequate-protein diet that without limiting calories induces different metabolic adaptations, eg, increased levels of circulating ketone bodies and a shift to lipid metabolism. Our objective was to assess the impact of a 6-week non-energy-restricted KD in healthy adults beyond cohorts of athletes on physical performance, body composition, and blood parameters. METHODS: Our single arm, before-and-after comparison study consisted of a 6-week KD with a previous preparation period including detailed instructions during classes and individual counselling by a dietitian...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28229464/modified-atkins-diet-is-an-effective-treatment-for-children-with-doose-syndrome
#19
Adelheid Wiemer-Kruel, Edda Haberlandt, Hans Hartmann, Gabriele Wohlrab, Thomas Bast
OBJECTIVE: Children with myoclonic astatic epilepsy (MAE; Doose syndrome) whose seizures do not respond immediately to standard antiepileptic drugs (AEDs) are at high risk of developing an epileptic encephalopathy with cognitive decline. A classic ketogenic diet (KD) is a highly effective alternative to AEDs. To date, there are only limited data on the effectiveness of the modified Atkins diet (MAD), which is less restrictive and more compatible with daily life. We report findings from a retrospective study on 30 MAE patients treated with MAD...
April 2017: Epilepsia
https://www.readbyqxmd.com/read/28223292/muscle-pgc-1%C3%AE-is-required-for-long-term-systemic-and-local-adaptations-to-a-ketogenic-diet-in-mice
#20
Svenia Schnyder, Kristoffer Svensson, Bettina Cardel, Christoph Handschin
Low-carbohydrate/high-fat (LCHF) diets are increasingly popular dietary interventions for body weight control and as treatment for different pathological conditions. However, the mechanisms of action are still poorly understood, in particular, in long-term administration. Besides liver, brain, and heart, skeletal muscle is one of the major organs involved in the regulation of physiological and pathophysiological ketosis. We assessed the role of the peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α) in skeletal muscle of male wild-type control and PGC-1α muscle-specific knockout mice upon 12 wk of LCHF diet feeding...
May 1, 2017: American Journal of Physiology. Endocrinology and Metabolism
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