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https://www.readbyqxmd.com/read/28335426/elevated-serum-hepcidin-levels-during-an-intensified-training-period-in-well-trained-female-long-distance-runners
#1
Aya Ishibashi, Naho Maeda, Daichi Sumi, Kazushige Goto
Iron is essential for providing oxygen to working muscles during exercise, and iron deficiency leads to decreased exercise capacity during endurance events. However, the mechanism of iron deficiency among endurance athletes remains unclear. In this study, we compared iron status between two periods involving different training regimens. Sixteen female long-distance runners participated. Over a seven-month period, fasting blood samples were collected during their regular training period (LOW; middle of February) and during an intensified training period (INT; late of August) to determine blood hematological, iron, and inflammatory parameters...
March 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28332115/periodized-nutrition-for-athletes
#2
REVIEW
Asker E Jeukendrup
It is becoming increasingly clear that adaptations, initiated by exercise, can be amplified or reduced by nutrition. Various methods have been discussed to optimize training adaptations and some of these methods have been subject to extensive study. To date, most methods have focused on skeletal muscle, but it is important to note that training effects also include adaptations in other tissues (e.g., brain, vasculature), improvements in the absorptive capacity of the intestine, increases in tolerance to dehydration, and other effects that have received less attention in the literature...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28326744/nutritional-parameters-and-carbohydrate-and-fat-metabolism-after-prolonged-salsolinol-administration-in-rats-fed-normal-or-high-fat-diets
#3
(no author information available yet)
OBJECTIVES: Previous studies have reported that exogenous salsolinol might contribute to myenteric cell death and altered gastrointestinal motility. Because the entire gut mucosal, entero-endocrine and motor functions are integrated by the enteric nervous system, the aim of the present study was to investigate if prolonged intraperitoneal salsolinol administration alters basic metabolism and nutritional parameters in adult Wistar rats fed normal or high-fat diets. METHODS: Male Wistar rats were subjected to continuous intraperitoneal low dosing of salsolinol with ALZET osmotic mini-pumps for 2 or 4 weeks and fed either a normal or high-fat diet...
December 22, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28323074/an-obesogenic-refined-low-fat-diet-disrupts-attentional-and-behavioral-control-processes-in-a-vigilance-task-in-rats
#4
Aaron P Blaisdell, Traci Biedermann, Eric Sosa, Ava Abuchaei, Neveen Youssef, Sylvie Bradesi
Diets consisting of refined foods (REF) are associated with poor physical (e.g., obesity and diabetes) and mental (e.g., depression) health and impaired cognition. Few animal studies have explored the causal links between diet processing and health. Instead, most studies focus on the role of macronutrients, especially carbohydrate and fat concurrently with how processed are the ingredients. We previously showed that a REF low fat diet (LFD) caused greater adiposity and impaired motivation compared to an unrefined control (CON) diet consisting of similar macronutrient ratios (Blaisdell et al...
March 18, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28320464/impact-of-different-dietary-approaches-on-glycemic-control-and-cardiovascular-risk-factors-in-patients-with-type-2-diabetes-a-protocol-for-a-systematic-review-and-network-meta-analysis
#5
Lukas Schwingshackl, Anna Chaimani, Georg Hoffmann, Carolina Schwedhelm, Heiner Boeing
BACKGROUND: Dietary advice is one of the cornerstones in the management of type 2 diabetes mellitus. The American Diabetes Association recommended a hypocaloric diet for overweight or obese adults with type 2 diabetes in order to induce weight loss. However, there is limited evidence on the optimal approaches to control hyperglycemia in type 2 diabetes patients. The aim of the present study is to assess the comparative efficacy of different dietary approaches on glycemic control and blood lipids in patients with type 2 diabetes mellitus in a systematic review including a standard pairwise and network meta-analysis of randomized trials...
March 20, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28316796/systematic-review-and-meta-analysis-of-dietary-carbohydrate-restriction-in-patients-with-type-2-diabetes
#6
Ole Snorgaard, Grith M Poulsen, Henning K Andersen, Arne Astrup
OBJECTIVE: Nutrition therapy is an integral part of self-management education in patients with type 2 diabetes. Carbohydrates with a low glycemic index are recommended, but the ideal amount of carbohydrate in the diet is unclear. We performed a meta-analysis comparing diets containing low to moderate amounts of carbohydrate (LCD) (energy percentage below 45%) to diets containing high amounts of carbohydrate (HCD) in subjects with type 2 diabetes. RESEARCH DESIGN AND METHODS: We systematically reviewed Cochrane library databases, EMBASE, and MEDLINE in the period 2004-2014 for guidelines, meta-analyses, and randomized trials assessing the outcomes HbA1c, BMI, weight, LDL cholesterol, quality of life (QoL), and attrition...
2017: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/28316072/the-effects-of-dash-diet-on-weight-loss-anti-m%C3%A3-llerian-hormone-and-metabolic-profiles-in-women-with-polycystic-ovary-syndrome-a-randomized-clinical-trial
#7
Fatemeh Foroozanfard, Hamideh Rafiei, Mansooreh Samimi, Hamid Reza Gilasi, Roohangiz Gorjizadeh, Zahra Heidar, Zatollah Asemi
OBJECTIVE: This study was designed to evaluate the effects of the Dietary Approaches to Stop Hypertension (DASH diet) on weight loss, anti-Müllerian hormone (AMH) and metabolic profiles in women with polycystic ovary syndrome (PCOS). DESIGN, PATIENTS AND MEASUREMENTS: A randomized controlled clinical trial was conducted among 60 overweight or obese patients with PCOS. Patients were randomly assigned to receive either low-calorie DASH (N=30) or control diet (N=30) for 12 weeks...
March 18, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28315860/determinants-and-duration-of-impact-of-early-gut-bacterial-colonization
#8
Christine Ann Edwards
BACKGROUND: An increasing number of studies show low diversity of the gut microbiome in those with chronic diseases such as obesity, inflammatory bowel disease, and allergy. Manipulation of the microbiota may promote health. However, the adult microbiota is stable and may be difficult to change. Understanding the fixed and modifiable factors, which determine colonization in early life, may provide strategies for acquisition of a health-promoting microbiome. SUMMARY: Not enough is known about the long-term effects of established determinants of gut colonization, including delivery mode, perinatal antibiotics, and infant diet...
March 18, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28315779/energy-and-macronutrient-intake-over-the-course-of-the-day-of-german-adults-a-dedipac-study
#9
Friederike Wittig, Eva Hummel, Germaine Wenzler, Thorsten Heuer
The aim of the study was to analyze the energy and macronutrient intake over the course of the day of selected population groups in Germany defined by sex, age, BMI, SES, and diet quality. The study was based on food consumption data from the German National Nutrition Survey II (2005-2007) assessed by two 4-day dietary weighing records of 662 women and men aged between 18 and 80 years. Energy and macronutrient intake were calculated using the German Nutrient Database 3.02 and summarized for the periods 'morning', 'midday', 'afternoon', 'evening', and 'night'...
March 15, 2017: Appetite
https://www.readbyqxmd.com/read/28304147/relation-of-dietary-carbohydrates-intake-to-circulating-sex-hormone-binding-globulin-levels-in-postmenopausal-women
#10
Mengna Huang, Jinjie Liu, Xiaochen Lin, Atsushi Goto, Yiqing Song, Lesley F Tinker, Kei-Hang Katie Chan, Simin Liu
BACKGROUND: Low circulating levels of sex hormone-binding globulin (SHBG) have been shown to be a direct and strong risk factor for type 2 diabetes, cardiovascular diseases, and hormone-dependent cancers, although the relation between various aspects of dietary carbohydrates and SHBG levels remains unexplored in population studies. METHODS: Among postmenopausal women with available SHBG measurements at baseline (n = 11,159) in the Women's Health Initiative, we conducted a comprehensive assessment of total dietary carbohydrates, glycemic load (GL), glycemic index (GI), fiber, sugar, and various carbohydrate-abundant foods in relation to circulating SHBG using multiple linear regressions adjusting for potential covariates...
March 17, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/28300773/the-low-fodmap-diet-many-question-marks-for-a-catchy-acronym
#11
REVIEW
Giulia Catassi, Elena Lionetti, Simona Gatti, Carlo Catassi
FODMAP, "Fermentable Oligo-, Di- and Mono-saccharides And Polyols", is a heterogeneous group of highly fermentable but poorly absorbed short-chain carbohydrates and polyols. Dietary FODMAPs might exacerbate intestinal symptoms by increasing small intestinal water volume, colonic gas production, and intestinal motility. In recent years the low-FODMAP diet for treatment of irritable bowel syndrome (IBS) has gained increasing popularity. In the present review we aim to summarize the physiological, clinical, and nutritional issues, suggesting caution in the prolonged use of this dietary treatment on the basis of the existing literature...
March 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28289278/cafeteria-diet-and-probiotic-therapy-cross-talk-among-memory-neuroplasticity-serotonin-receptors-and-gut-microbiota-in-the-rat
#12
J E Beilharz, N O Kaakoush, J Maniam, M J Morris
The western diet is known to have detrimental effects on cognition and the gut microbiota, but few studies have investigated how these may be related. Here, we examined whether a probiotic could prevent diet-induced memory deficits. Rats were pre-exposed to vehicle, low or high doses of VSL#3 for 2 weeks before half were switched from chow to a cafeteria diet (Caf) for 25 days; VSL#3 treatment continued until death. High-dose VSL#3 prevented the diet-induced memory deficits on the hippocampal-dependent place task, but the probiotic caused deficits on the perirhinal-dependent object task, irrespective of diet or dose...
March 14, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28285608/sex-differences-in-adolescents-glycaemic-and-insulinaemic-responses-to-high-and-low-glycaemic-index-breakfasts-a-randomised-control-trial
#13
Simon B Cooper, Karah J Dring, John G Morris, Ben E W Cousins, Maria L Nute, Mary E Nevill
During puberty young people undergo significant hormonal changes which affect metabolism and, subsequently, health. Evidence suggests there is a period of transient pubertal insulin resistance, with this effect greater in girls than boys. However, the response to everyday high and low glycaemic index (GI) meals remains unknown. Following ethical approval, forty adolescents consumed a high GI or low GI breakfast, in a randomised cross-over design. Capillary blood samples were taken during a 2-h postprandial period, examining the glycaemic and insulinaemic responses...
March 13, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28274839/dietary-protein-aging-and-nutritional-geometry
#14
REVIEW
Stephen J Simpson, David G Le Couteur, David Raubenheimer, Samantha M Solon-Biet, Gregory J Cooney, Victoria C Cogger, Luigi Fontana
Nearly a century of research has shown that nutritional interventions can delay aging and age- related diseases in many animal models and possibly humans. The most robust and widely studied intervention is caloric restriction, while protein restriction and restriction of various amino acids (methionine, tryptophan) have also been shown to delay aging. However, there is still debate over whether the major impact on aging is secondary to caloric intake, protein intake or specific amino acids. Nutritional geometry provides new perspectives on the relationship between nutrition and aging by focusing on calories, macronutrients and their interactions across a landscape of diets, and taking into account compensatory feeding in ad libitum-fed experiments...
March 6, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28271568/effect-of-ziziphus-jujube-fruit-infusion-on-lipid-profiles-glycaemic-index-and-antioxidant-status-in-type-2-diabetic-patients-a-randomized-controlled-clinical-trial
#15
Zeinab Yazdanpanah, Akram Ghadiri-Anari, Alireza Vahidi Mehrjardi, Ali Dehghani, Hadi Zare Zardini, Azadeh Nadjarzadeh
This study was designed to assess the effects of Ziziphus jujube fruit (ZJF) infusion on lipid profiles, glycaemic control and antioxidant status in patients with type 2 diabetes mellitus (T2DM). In this randomized controlled clinical trial, 116 participants with T2DM (older than 30 years) were assigned to consume a balanced diet or diet plus ZJF infusion (10 g/100 mL boiling water) three times/day before main meals for 12 weeks. Diet was designed to be energy restricted (500 kcal/day deficit from estimated energy requirements), and macronutrient content was similar in both groups (55% carbohydrate, 15% protein and 30% fat)...
March 7, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28270747/metabolic-dysfunction-underlying-autism-spectrum-disorder-and-potential-treatment-approaches
#16
REVIEW
Ning Cheng, Jong M Rho, Susan A Masino
Autism spectrum disorder (ASD) is characterized by deficits in sociability and communication, and increased repetitive and/or restrictive behaviors. While the etio-pathogenesis of ASD is unknown, clinical manifestations are diverse and many possible genetic and environmental factors have been implicated. As such, it has been a great challenge to identify key neurobiological mechanisms and to develop effective treatments. Current therapies focus on co-morbid conditions (such as epileptic seizures and sleep disturbances) and there is no cure for the core symptoms...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28265828/liver-regeneration-is-impaired-in-mice-with-acute-exposure-to-a-very-low-carbohydrate-diet
#17
Hao Chen, Yandie Lin, Wu Sun, Yun Cai, Hao Li
BACKGROUND: The metabolic response to hepatic insufficiency has been implicated in the regulators of normal liver regeneration. Modulation of nutritional factors has been demonstrated to affect liver regeneration. Diets containing very low carbohydrate and high fat levels cause a unique metabolic state, the effect of which on liver regeneration is unknown. METHODS: Mice were placed on standard mice chow (ND) or a very low carbohydrate diet (VLCD) after 70% partial hepatectomy (PH)...
March 6, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28264433/the-effect-of-low-carbohydrate-diets-on-fertility-hormones-and-outcomes-in-overweight-and-obese-women-a-systematic-review
#18
Melanie McGrice, Judi Porter
(1) Background: Medical interventions including assisted reproductive technologies have improved fertility outcomes for many sub-fertile couples. Increasing research interest has investigated the effect of low carbohydrate diets, with or without energy restriction. We aimed to systematically review the published literature to determine the extent to which low carbohydrate diets can affect fertility outcomes; (2) Methods: The review protocol was registered prospectively with Prospective Register for Systematic Reviews (registration number CRD42016042669) and followed Preferred Reporting Items For Systematic Reviews and Meta-Analyses guidelines...
February 27, 2017: Nutrients
https://www.readbyqxmd.com/read/28261164/impact-of-westernized-diet-on-gut-microbiota-in-children-on-leyte-island
#19
Jiro Nakayama, Azusa Yamamoto, Ladie A Palermo-Conde, Kanako Higashi, Kenji Sonomoto, Julie Tan, Yuan-Kun Lee
Urbanization has changed life styles of the children in some towns and cities on Leyte island in the Philippines. To evaluate the impact of modernization in dietary habits on gut microbiota, we compared fecal microbiota of 7 to 9-year-old children from rural Baybay city (n = 24) and urban Ormoc city (n = 19), and assessed the correlation between bacterial composition and diet. A dietary survey indicated that Ormoc children consumed fast food frequently and more meat and confectionary than Baybay children, suggesting modernization/westernization of dietary habits...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28259804/diet-choice-patterns-in-rodents-depend-on-novelty-of-the-diet-exercise-species-and-sex
#20
Tiffany Yang, Wei-Jie Xu, Haley York, Nu-Chu Liang
Prolonged consumption of a palatable, high fat (HF) diet paired with a lack of physical activity can exacerbate the development of obesity. Exercise can facilitate the maintenance of a healthy body weight, possibly though mediating changes in diet preference. Using a two-diet choice and wheel running (WR) paradigm, our laboratory previously demonstrated that WR induces HF diet avoidance with different persistency in male and female rats when HF diet and WR are introduced simultaneously. The aims of this study were to examine whether this behavior is species dependent and to what extent the novelty of the diet affects WR induced HF diet avoidance...
March 1, 2017: Physiology & Behavior
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