Calorie Restriction Diets on Weight Reduction, Post weigh-in Recovery and Exercise Performance in Athletes

NCT ID: NCT05017259

Last Updated: 2021-08-23

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

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

12 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-08-17

Study Completion Date

2019-09-26

Brief Summary

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Low-carbohydrate diets are often used as weight-loss strategies by obese individuals and athletes. This diet has effects on oxidizing fat and suppressing appetite. But short term evidences are still few. In combat sports such as taekwondo, athletes prefer rapid weight loss to achieve a desired weight category. The purpose of this study was to investigate the impact of the low carbohydrate diet combined with strict calorie restriction on body composition and exercise performance in taekwondo athletes.

Detailed Description

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This study used a randomized cross-over design. Each participant completed a low carbohydrate and a high carbohydrate trial in a random order, separated by a 30-day wash-out period. Each trial comprised of a 7-day weight loss period, followed by an 18-hr recovery period. The purpose of this study was to investigate the effect of 7-day caloric restriction with low- or high-carbohydrate diet, combined with an 18-hr recovery period, on body weight loss and taekwondo-specific performance.

Conditions

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Diet, Reducing

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Caregivers

Study Groups

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low carbohydrate trial

The energy distribution was carbohydrate 10%, protein 40-50%, fat 40-50% in the LC trial.

Group Type EXPERIMENTAL

calorie restriction diet

Intervention Type DIETARY_SUPPLEMENT

The 7-day low-calorie diet contained 15.8 ± 0.4 kcal/kg/d in both trials, divided into three meals a day.

high carbohydrate trial

The energy distribution was carbohydrate 60-65%, protein 30-40%, fat 5-10% in the HC trial.

Group Type ACTIVE_COMPARATOR

calorie restriction diet

Intervention Type DIETARY_SUPPLEMENT

The 7-day low-calorie diet contained 15.8 ± 0.4 kcal/kg/d in both trials, divided into three meals a day.

Interventions

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calorie restriction diet

The 7-day low-calorie diet contained 15.8 ± 0.4 kcal/kg/d in both trials, divided into three meals a day.

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Must have at least 6 years of Taekwondo training experience
* Must have participated in domestic or international competitions

Exclusion Criteria

* Smoking
* Cardiovascular disease
* Diabetes
* Hypertension
* Any medication in the past 3 months
Minimum Eligible Age

20 Years

Maximum Eligible Age

24 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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Chin Hsu

OTHER

Sponsor Role lead

Responsible Party

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Chin Hsu

Assistant professor

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Chin Hsu

Role: PRINCIPAL_INVESTIGATOR

Assistant professor

Locations

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National Taiwan University of Sport

Taichung, , Taiwan

Site Status

Countries

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Taiwan

Other Identifiers

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MOST 108-2410-H-028-005

Identifier Type: -

Identifier Source: org_study_id

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