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

Chin Hsu

Status: Completed

Conditions: Diet, Reducing

Treatments: Dietary Supplement: calorie restriction diet

Study type: Interventional

Funder types: Other

Identifiers

NCT05017259

MOST 108-2410-H-028-005

Details and patient eligibility

About

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.

Full description

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.

Enrollment: 12 patients

Sex: Male

Ages: 20 to 24 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Double Blind

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12 participants in 2 patient groups

low carbohydrate trial

Experimental group

Description:

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

Treatment:

Dietary Supplement: calorie restriction diet

high carbohydrate trial

Active Comparator group

Description:

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

Treatment:

Dietary Supplement: calorie restriction diet