Effects of Acute Dietary Changes on Estimates of Body Composition

Not Applicable

Completed

• Conditions: Overweight
• Interventions: Other: Low-carbohydrate diet; Other: High-carbohydrate diet

• Registration Number: NCT02888405
• Lead Sponsor: Baylor University

Brief Summary

The present study sought to investigate the effects of acute dietary changes on estimates of body composition. Specifically, the impact of an acute high-carbohydrate diet (9 g/kg body weight of carbohydrate) and an acute very low-carbohydrate diet (1 - 1.5 g/kg body weight of carbohydrate) were examined.

Detailed Description

Not available

Study Timeline

• Study Start: 2015-11
• Primary Completion: 2016-02
• Study Completion: 2016-02
• Status Verified: 2016-08
• Study First Submitted: 2016-08-19
• Study First Submitted QC: 2016-08-30
• Last Update Submitted: 2016-08-30
• Study First Posted: 2016-09-05
• Last Update Posted: 2016-09-05

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 48

Inclusion Criteria

• Generally healthy
• Recreationally active (>150 min/week of moderate or vigorous physical activity)
• Pre-menopausal with regularly occurring menstrual cycles over past 6 months (in females only)

Exclusion Criteria

• Failure to meet inclusion criteria
• Commencement or cessation of taking the dietary supplement creatine within the past month
• Pregnant or may become pregnant during the study
• Known or suspected food allergy to any items used in study
• Presence of medical condition that could reasonably be negatively affected by participation

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Very low-carbohydrate diet	Low-carbohydrate diet	Single day of 1 - 1.5 g/kg body weight consumption of carbohydrate. Isocaloric to high-carbohydrate condition.
High-carbohydrate diet	High-carbohydrate diet	Single day of 9 g/kg body weight consumption of carbohydrate. Isocaloric to very low-carbohydrate condition.

Primary Outcome Measures

Name	Time	Method
Dual-energy X-ray Absorptiometry Output	2 days	Measures of lean soft tissue and fat mass obtained from dual-energy x-ray absorptiometry.
Bioelectrical Impedance Analysis Output	2 days	Measures of fat-free mass and fat mass obtained from bioelectrical impedance analysis.