Effects of Ketogenic Diet on Triathlon's Performance

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

16 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-02-01

Study Completion Date

2017-07-12

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

The study aimed to verify the effects of 5 weeks of ketogenic diet (KD) on some performance index in long distance triathletes

Related Clinical Trials

Explore similar clinical trials based on study characteristics and research focus.

Effect of Ketogenic and Carbohydrate Diet in Crossfit

NCT03665948

Nutrition Ketogenic Dieting Low Glycemic Index Diet +2 more

ACTIVE_NOT_RECRUITING NA

Ketogenic Diet in Healthy Adults With Differing BMI

NCT06515912

Cardiovascular Diseases

RECRUITING NA

The Effect of Diet Composition on Performance, Expenditure, Blood Lipids, and Appetite Hormones in Highly Trained Cyclists

NCT04097171

Endurance Cycling Performance

COMPLETED NA

Effect of Isocaloric Ketogenic Diet on Physical Performance at High Altitude

NCT05603689

Ketogenic Dieting Altitude Hypoxia Physical Activity

COMPLETED NA

The Effects of Exogenous Ketones on Cognitive Function

NCT07051655

Placebo - Control Ketone Monoester

RECRUITING NA

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

16 well trained male long distance Triathletes participates in the study (30.65 ± 10.77 years of age), with minimum one year of triathlon competition experience and 8-10 hours of training per week. All subjects had a personal interview made by a registered Medical Doctor about the diet intervention prior to the beginning of the study. Moreover participants were educated about the benefits and limitations of the two different dietary treatments and asked to nominate their preference for, or non-acceptance of, each of these interventions. Thus participants also decided liberally if participate for the diet intervention or not. This choice was decided to prevent any type of dropout in the KD group, considering that a free and conscious choices is better for the adherence on a strict diet like ketogenic diet . Investigators were thus able to allocate the athletes to their preferred treatment, while achieving suitable matching of groups based on age, body mass and aerobic power. All the participants were healthy and injured free, and not consuming a low carbs diet prior to the study. The diet macronutrient percentage distribution was the following: for ND the percentages were 25% of TDC (total daily calories), fat were 20% of TDC and carbohydrates represented the 55% of TDC; for KD the percentages were 68% fat, 26% protein and 6% carbohydrate. In the KD very low carbohydrate foods that simulate carbohydrates taste food like croissants, bread and cracked slices made by Le Gamberi Foods (Forlì, Italy), were used for a better compliance to the dietary intervention. Subjects undertaken an anthropometric test and two different cardiopulmonary tests with a professional cycloergometer (MARCA). The anthropometric measures were taken to evaluated body weight. height and body composition . After the body composition analysis subjects underwent to a maximal cardiopulmonary test (GXT) to evaluate the maximal oxygen consumption (VO2max). The following day subjects performed 60 minutes at 45% of PPO to assess endurance performance at ironman biking race-pace. The day after test session KD group started the KD 5 weeks. The Control Group (S) followed his habitual normo-caloric, balanced diet. The same order and procedures were conducted for testing the subjects post diet intervention. Anthropometric and performance test was conducted in the same order for each subjects and at the same time of the day. Blood ketones were measured each other day to ensure the compliance to KD

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Ketogenic Dieting Physical Activity

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

It is single blind, parallel arms study

Primary Study Purpose

OTHER

Blinding Strategy

SINGLE

Outcome Assessors

Treatment and control were masked with A and B

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Ketogenic diet

Subjects followed 5 weeks of ketogenic diet

Group Type EXPERIMENTAL

Ketogenic diet

Intervention Type OTHER

total daily caloric intake was divided into 5 meals. Individual daily caloric need is calculated referring to body composition and adjusted for daily activity (Frankenfield, Roth-Yousey, \& Compher, 2005; Wang et al., 2000). Macronutrients percentage is 68% fat, 26% protein and 6% carbohydrate Paoli et al. 2013). Very low carbohydrate foods that simulate carbohydrates taste food like croissants, bread and cracked slices made by Le Gamberi Foods (Forlì, Italy), are used for a better compliance to the dietary intervention

Western Diet

Subjects followed 5 weeks of a western diet

Group Type ACTIVE_COMPARATOR

Western Diet

Intervention Type OTHER

total daily caloric intake was divided into 5 meals. Individual daily caloric need is calculated referring to body composition and adjusted for daily activity (Frankenfield, Roth-Yousey, \& Compher, 2005; Wang et al., 2000). The diet macronutrient percentage distribution is the following: protein is 25% of TDC (total daily calories), fat is 20% of TDC and carbohydrates represented the 55% of TDC

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Ketogenic diet

total daily caloric intake was divided into 5 meals. Individual daily caloric need is calculated referring to body composition and adjusted for daily activity (Frankenfield, Roth-Yousey, \& Compher, 2005; Wang et al., 2000). Macronutrients percentage is 68% fat, 26% protein and 6% carbohydrate Paoli et al. 2013). Very low carbohydrate foods that simulate carbohydrates taste food like croissants, bread and cracked slices made by Le Gamberi Foods (Forlì, Italy), are used for a better compliance to the dietary intervention

Intervention Type OTHER

Western Diet

total daily caloric intake was divided into 5 meals. Individual daily caloric need is calculated referring to body composition and adjusted for daily activity (Frankenfield, Roth-Yousey, \& Compher, 2005; Wang et al., 2000). The diet macronutrient percentage distribution is the following: protein is 25% of TDC (total daily calories), fat is 20% of TDC and carbohydrates represented the 55% of TDC

Intervention Type OTHER

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* long distance Triathletes (8-10 hours of training per week), competing in half Ironman or Ironman
* no previous experience of low carbohydrate diet
* more than 3 years of training