A influência da suplementação de triglicerídeos de cadeia média no desempenho em exercícios de ultra-resistência

Ferreira, Antonio Marcio Domingues; Barbosa, Paula Edila Botelho; Ceddia, Rolando B.

doi:10.1590/s1517-86922003000600006

Cited by 7 publications

(3 citation statements)

References 23 publications

(35 reference statements)

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“…Triglycerides are essential for long duration and high energetic consumption races because they promote the economical consumption of muscular glycogen and provide energy to the body (9 kcal/g). Thus, athletes' performance improves at the end of the race because of glycogen availability (Ferreira et al, 2003). In the present study, athletes of the caffeine group demonstrated higher levels of triglycerides when compared to the placebo group.…”

Section: Discussionsupporting

confidence: 49%

Caffeine prevents exercise-induced hypoglycemia in trained runners

Weber

Queiróga

Kiihn

et al. 2019

jhse

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The objective of this study was to analyze the physiological, biochemical, and perceptive effects of caffeine intake in marathon runners after a maximal treadmill stress test. The sample comprised randomly selected 12 male athletes of long distance races (42,125 km). The participants performed the maximal stress test twice, after ingesting a placebo and caffeine (dose de 6 mg.kg-1) capsules, using double-blind methodology. Anthropometric parameters, heart rate (HR), blood pressure (BP), and subjective perception of effort (SPE) were evaluated before, during, and after the test. Blood samples for analyses of glucose, lactate (LAC), and triglyceride (TG) levels were also collected at the same time. The maximal stress test was performed on a treadmill, and parameters such as VO2 max and subjective perception of effort (SPE) were analyzed. Before the trial and caffeine/placebo ingestion, capillary blood was collected by finger puncture for subsequent analyses. Subsequently, the maximal treadmill stress test was initiated with a 3-minute low intensity warmup phase. The trial continued with the maximal treadmill stress test protocol, followed by a cool-down period (walk) until HR normalization. The athletes remained seated for 10 minutes, and during this period, HR and BP were measured, and blood samples were collected. HR values presented no difference between groups.

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Section: Discussionsupporting

confidence: 49%

Caffeine prevents exercise-induced hypoglycemia in trained runners

Weber

Queiróga

Kiihn

et al. 2019

jhse

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“…Studies on the effects of a diet rich in MCFAs (equivalent to 45% of TEV) compared with a diet rich in LCFAs administered over a 21-day period showed that plasma TC, LDL and triglyceride levels increased by 11, 12 and 22%, respectively, as a result of the ingestion of MCFAs, while HDL levels remained unchanged [22]. However, a diet providing an intake of MCFAs in excess of 30 g/day would be nutritionally unbalanced and likely to produce undesirable collateral effects, which might explain the results observed [23]. In the present study, the hypocaloric diet adopted by the individuals of group C was supplemented with MCFA-rich coconut oil (as the main source of lipids), but no undesirable alterations were observed in the lipid profile of the participants after 12 weeks.…”

Section: Discussionmentioning

confidence: 91%

Effects of Dietary Coconut Oil on the Biochemical and Anthropometric Profiles of Women Presenting Abdominal Obesity

Assunção

Ferreira

Santos

et al. 2009

Lipids

133

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The effects of dietary supplementation with coconut oil on the biochemical and anthropometric profiles of women presenting waist circumferences (WC) >88 cm (abdominal obesity) were investigated. The randomised, double-blind, clinical trial involved 40 women aged 20-40 years. Groups received daily dietary supplements comprising 30 mL of either soy bean oil (group S; n = 20) or coconut oil (group C; n = 20) over a 12-week period, during which all subjects were instructed to follow a balanced hypocaloric diet and to walk for 50 min per day. Data were collected 1 week before (T1) and 1 week after (T2) dietary intervention. Energy intake and amount of carbohydrate ingested by both groups diminished over the trial, whereas the consumption of protein and fibre increased and lipid ingestion remained unchanged. At T1 there were no differences in biochemical or anthropometric characteristics between the groups, whereas at T2 group C presented a higher level of HDL (48.7 +/- 2.4 vs. 45.00 +/- 5.6; P = 0.01) and a lower LDL:HDL ratio (2.41 +/- 0.8 vs. 3.1 +/- 0.8; P = 0.04). Reductions in BMI were observed in both groups at T2 (P < 0.05), but only group C exhibited a reduction in WC (P = 0.005). Group S presented an increase (P < 0.05) in total cholesterol, LDL and LDL:HDL ratio, whilst HDL diminished (P = 0.03). Such alterations were not observed in group C. It appears that dietetic supplementation with coconut oil does not cause dyslipidemia and seems to promote a reduction in abdominal obesity.

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“…Medium‐chain triglycerides (MCTs) are lipids formed by three medium‐chain fatty acids (MCFAs) with 6–12 carbon atoms attached to the glycerol. The main fatty acids that comprise MCTs are caprylic acid (C8: 0, 50–80%), capric acid (C10: 0, 20–50%) and, to a lesser extent, caproic acid (C6: 0, 1–2%) and lauric acid (C12: 0.1–2%) (Ferreira et al., ).…”

Section: Introductionmentioning

confidence: 99%

Influence of medium‐chain triglycerides on consumption and weight gain in rats: a systematic review

Ferreira

Lisenko

Barros

et al. 2013

Animal Physiology Nutrition

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SummaryThe use of medium-chain triglycerides (MCTs) has been studied for years in an attempt to elucidate their effects in food intake and body weight in animals. The aim of this study was to determine whether there is evidence that the use of MCT reduces consumption and body weight gain in rats, a species chosen as it has been widely used as an animal model in different surveys. A search of scientific work was performed in November 2011 on two bases: 'Web of Science' and 'PubMed'. The terms sample size and homogeneity, randomisation, food consumption and weight gain, body composition, enzyme activity and hormonal activity in rats were used as selection criteria. Thirteen papers were selected after the refinement of the research. Twelve studies measured weight gain and among these, seven detected a decrease in weight gain and five found no differences. Twelve papers also measured food intake and among these, four detected a decrease in consumption, one detected an increase and seven found no differences. Based on established criteria for the ranking of scientific papers, it is concluded that there is strong evidence that MCTs can effectively reduce the consumption and subsequent weight gain of animals. However, in the long term, there may not be differences in results depending on the phenotypic adaptation of animals to a new metabolic condition.

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A influência da suplementação de triglicerídeos de cadeia média no desempenho em exercícios de ultra-resistência

Cited by 7 publications

References 23 publications

Caffeine prevents exercise-induced hypoglycemia in trained runners

Caffeine prevents exercise-induced hypoglycemia in trained runners

Effects of Dietary Coconut Oil on the Biochemical and Anthropometric Profiles of Women Presenting Abdominal Obesity

Influence of medium‐chain triglycerides on consumption and weight gain in rats: a systematic review

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