Introduction: Maximizing fat oxidation is currently a major target in endurance sports. The aim of the present study was therefore, to (1) determine if a cycle ergometry protocol adapted to a treadmill investigational setting, would elicit potential peak fat oxidation rates; (2) Verify if these recorded variables were also maintainable throughout an endurance exercise bout. Methods: Six healthy...

One obvious explanation for the effect of high fat diets in lowering the requirement for thiamine has been that fat metabolism does not require thiamine, while carbohydrate metabolism does. This explanation finds considerable support in one of the known functions of thiamine pyrophosphate. According to current theory, carbohydrate is oxidized to pyruvate, and pyruvate must be decarboxylated for...

The work is dedicated to study the production of microcrystalline cellulose (MCC) from sunflower seed husks (SFH) by oxidation in an organic solvent, dependence its hydromodule, yield and quality index MCC on type. According morphological characteristics SFH with different fat content, effective hydromodulus obtained low-fat 1:12 g/mL a 50.69%, while for high-fat SFH:PAA 1:14 g/mL, it was deter...

The effects of fat content and nitrite-curing of pork were investigated on the formation of cytotoxic and genotoxic lipid oxidation products (malondialdehyde, 4-hydroxy-2-nonenal, volatile simple aldehydes), protein oxidation products (protein carbonyl compounds) and NOC-specific DNA adducts (O6-carboxy-methylguanine) during in vitro digestion. The formation of these products during digestion i...

Postexercise fat oxidation may be important for exercise prescription aimed at optimizing fat loss. The authors examined the effects of exercise intensity, duration, and modality on postexercise oxygen consumption (VO2) and substrate selection/ respiratory-exchange ratio (RER) in healthy individuals. Three experiments (n = 7 for each) compared (a) short- (SD) vs. long-duration (LD) ergometer cy...

Individuals with insulin resistance and type 2 diabetes have an impaired ability to switch appropriately between carbohydrate and fatty acid oxidation. However, whether this is a cause or consequence of insulin resistance is unclear, and the mechanism(s) involved in this response is not completely elucidated. Whole-body fat oxidation and transcriptional regulation of genes involved in lipid met...

The aim of the present study was to establish fat oxidation rates over a range of exercise intensities in a large group of healthy men and women. It was hypothesised that exercise intensity is of primary importance to the regulation of fat oxidation and that gender, body composition, physical activity level, and training status are secondary and can explain part of the observed interindividual ...

The effect of pre-exercise meal composition on metabolism and performance in cycling were investigated in a crossover study. Twelve competitive cyclists ingested high-fat, high-carbohydrate, or high-protein meals 90 min before a weekly exercise test. The test consisted of a 1-hour pre-load at 55% peak power, five 10-min incremental loads from 55 to 82% peak power (to measure the peak fat-oxidat...

The goal of this study was to determine whether differences in physical activity-related fat oxidation exist between lean and obese African-American (LAA and OAA) and lean and obese Caucasian (LC and OC) premenopausal women. Lean AA (28.4 +/- 2.8 yr, n = 7), LC (24.7 +/- 1.8 yr, n = 9), OAA (30.9 +/- 2.2 yr, n = 11), and OC (34.1 +/- 2.5 yr, n = 9) women underwent preliminary assessment of peak...

BACKGROUND Exercise might have a persistent effect on energy expenditure and fat oxidation, resulting in increased fat loss. However, even without weight loss, exercise results in positive metabolic effects. The effect of an aerobic exercise program on 24-h total energy expenditure (TEE) and its components-basal (BEE), sleep (SEE), and awake sedentary (SEDEE) energy expenditure and substrate ox...