Download or read book Effects of Acid Modified Cornstarch Ingestion During Exercise on Carbohydrate Utilization written by Emily Rebecca Martini and published by . This book was released on 2002 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to compare metabolic and performance effects of ingestion of glucose, acid-modified high amylose starch and placebo during endurance exercise at 60% of V02 peak. Specifically, we sought to determine effects on plasma glucose maintenance, total carbohydrate oxidation as measured by indirect calorimetry, exogenous carbohydrate oxidation using 13C02 excretion, and endurance performance. Ten male subjects cycled to fatigue at 60% of V02peak, after ingesting acid-modified high amylose starch (AMS), glucose, or a sweet non-caloric placebo. The ingestion protocol consisted of a bolus feeding of 4 ml/kg (280 ml, 22 g CHO for a 70 kg person) at the onset of exercise, and 2 ml/kg body weight every 15 minutes for the duration of the exercise. All trials were separated by 1 week and treatments were administered in a random, double blind manner. The plasma glucose derived from exogenous carbohydrates (CHO) at the time of fatigue for AMS, and glucose were 23% and 46% respectively. A significant difference was seen among treatments. Maximum exogenous 13C oxidation rates were 0.69 g/min, 0.21 g/min for the GLU and AMS trials respectively. Exogenous carbohydrate oxidized was different among treatments. Overall time to exhaustion was significantly lower in the CON treatments (138 min), compared to the AMS (158 min) and GLU (159 min) treatments. Carbohydrate in the form of an acid-modified starch was digested, absorbed, and metabolized when ingestion during endurance exercise, as supported by the direct measured of absorption and oxidation of the exogenous carbohydrate using 13C methodology.
Download or read book The Effect of Pre exercise Modified Starch Feedings on Carbohydrate Metabolism During Endurance Exercise written by Carrie Jo Leiran Lockard and published by . This book was released on 1992 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Postprandial Glycemic Response and Utilization of Acid alcohol Modified High Amylose Cornstarch written by Jeffrey Brett Borengasser and published by . This book was released on 2003 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-term ingestion of foods high in glycemic index can lead to decreased insulin sensitivity and increases risk for coronary heart disease. Therefore, a diet proportionally higher in low glycemic index foods including high amylose cornstarches can be beneficial. However, high amylose starches are partially resistant to digestion. In the present study, glycemic response, digestion, and utilization of acid-alcohol modified amylomaize-7 cornstarch was investigated. The test carbohydrates were acid-alcohol modified amylomaize-7 cornstarch (MOD), native amylomaize-7 cornstarch (NAT), and dextrose (DEX). MOD and NAT resulted in lesser glucose and insulin responses than did DEX. DEX resulted in decreased plasma free fatty acid (FFA) concentration at 30, 60, and 120 minutes post ingestion, while MOD resulted in no changes in FFA concentration and NAT resulted in a decrease in FFA at 60 minutes postprandial. During the DEX challenge, plasma triglyceride concentration increased from 0 to 30 minutes, and then fell significantly from 30 minutes to 180 and 240 minutes. Triglyceride concentration remained at the zero time concentration throughout the two amylomaize-7 cornstarch trials. No differences in glycemic response between MOD and NAT were revealed. Furthermore, exogenous glucose in plasma and in breath samples revealed no differences between MOD, NAT, and DEX. However, the results of the breath sample analyses have been questioned due to the magnitude of the resulting delta values. Furthermore, due to equipment difficulties, exogenous plasma glucose analyses were completed for only two subjects. Preliminary results indicate that all three carbohydrates are digested and oxidized to some extent, but no differences between MOD and NAT occurred. These results indicate that amylomaize-7 cornstarches result in a low glycemic index, and that ingestion of them results in maintained plasma glucose concentration for several hours. It appears that ingestion of amylomaize-7 cornstarches results in less suppression of FFA lipolysis and less triglyceride synthesis than corn dextrose. These effects of LGI foods agree with previous research (Brand et al., 1991; Fontvieille et al., 1992; Jenkins et al., 1998; Thomas et al., 1991; Wolever et al., 1992). Completing exogenous plasma glucose analyses would reveal any existing digestibility differences between modified and native amylomaize-7 cornstarches.
Download or read book Commencement written by Iowa State University and published by . This book was released on 2001 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Master s Theses Directories written by and published by . This book was released on 2003 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Download or read book Handbook of Dietary Phytochemicals written by Jianbo Xiao and published by Springer. This book was released on 2021-09-02 with total page 1953 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes recent advances in the chemistry, bioactivity, nutrition, and functional aspects of dietary phytochemicals, as well as the health and functional aspects of foods rich in phytochemicals. Consisting of forty-four chapters, it discusses the different chemical types of phytochemicals in our diets and food and presents data collected from animal or human experiments that are directly related to human health. Each chapter covers the chemistry, epidemiological study, bioavailability, bioactivity (animal experiments) function in humans and safety, as well as products on the market. Moreover, the more than 200 figures make it easy to grasp the main findings in each area.
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1989 with total page 1422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Pre exercise Carbohydrate Consumption on Metabolism During Exercise written by Luke James Monzingo and published by . This book was released on 2016 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is well documented that consuming carbohydrates (CHO) prior to exercise has been shown to alter metabolism. There are many ways that CHO ingestion affects substrate utilization and blood glucose dynamics at the start of exercise. Changes in the concentrations of blood glucose, insulin, glucagon, free fatty acids (FFAs) as well as varying utilizations of different substrates have been observed. Each of these responses is reflective of the body’s capacity to maintain homeostasis through different physiological conditions and demands. PURPOSE: The aim is to deduce how varying amounts (approximately 0, 12.5, 25 and 50g for a 70 kg person) of pre-exercise sucrose ingestion effects metabolism including blood glucose concentration and fat oxidation during 30 minutes of moderate intense exercise. METHODS: This will be a randomized crossover study. After the initial assessment of baseline data (VO2peak), participants will be asked to perform four cycling trials at 50% of VO2peak for 30 minutes. Forty-five minutes before each exercise trial, participants will consume 0, 12.5, 25 and 50g (for a 70kg person) of sucrose. VO2 and VCO2 will be collected for 15 minutes prior to exercise and for the entire 30 minutes of cycling. Blood glucose will be obtained through the finger prick method and collected directly prior to exercise, 5, 15 and 30 minutes into cycling. Heart rate and rate of perceived exertion will be measured every 5 minutes of exercise. DISCUSSION: It is speculated that a small dose (12.5g for a 70kg person) of pre-exercise sucrose consumption will be able to demonstrate a decline in blood glucose concentration during exercise with a step-wise reduction in fat oxidation. This dose response curve will display the sensitivity of metabolism to ingested sucrose.
Download or read book Effect of Carbohydrate and Protein Ingestion During Exercise on Cycling Time Trial Performance and Metabolism in Trained Men written by Martin Van Essen and published by . This book was released on 2005 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The American Journal of Clinical Nutrition written by and published by . This book was released on 1998-10 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Starch in Food written by Ann-Charlotte Eliasson and published by CRC Press. This book was released on 2004-09-20 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starch is an important ingredient for the food industry and researchers are making progress in discovering new details about its structure, functionality and impact on our health. Starch in Food reviews starch structure and functionality and the growing range of starch ingredients used to improve the nutritional and sensory quality of food. Starch in Food begins by illustrating how plant starch can be analyzed and modified, with chapters on plant starch synthesis, starch bioengineering, and starch-acting enzymes. It examines the sources of starch, from wheat and potatoes to rice, corn, and tropical supplies. The book looks at modified starches and the stability of frozen foods, starch lipid interactions and starch-based microencapsulation. It covers starch as a functional food, investigating the impact of starch on physical and mental performance, detecting nutritional starch fractions, and analyzing starch digestion. Starch in Food is an authoritative and indispensable reference, edited by a leader in the field with contributions from experts worldwide.
Download or read book Research Awards Index written by and published by . This book was released on 1989 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1994 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Antioxidants in Sport Nutrition written by Manfred Lamprecht and published by CRC Press. This book was released on 2014-09-17 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of antioxidants in sports is controversial due to existing evidence that they both support and hinder athletic performance. Antioxidants in Sport Nutrition covers antioxidant use in the athlete ́s basic nutrition and discusses the controversies surrounding the usefulness of antioxidant supplementation. The book also stresses how antioxidants may affect immunity, health, and exercise performance. The book contains scientifically based chapters explaining the basic mechanisms of exercise-induced oxidative damage. Also covered are methodological approaches to assess the effectiveness of antioxidant treatment. Biomarkers are discussed as a method to estimate the bioefficacy of dietary/supplemental antioxidants in sports. This book is useful for sport nutrition scientists, physicians, exercise physiologists, product developers, sport practitioners, coaches, top athletes, and recreational athletes. In it, they will find objective information and practical guidance.
Download or read book Experiment Station Record written by United States. Office of Experiment Stations and published by . This book was released on 1927 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomedical Index to PHS supported Research written by and published by . This book was released on 1989 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experiment Station Record written by U.S. Office of Experiment Stations and published by . This book was released on 1927 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
