NCT03231514

Brief Summary

The study will examine the performance and body composition effects of ketogenic vs carbohydrate-based diets, determine the carbohydrate tolerance ("carbohydrate threshold") for active individuals on a ketogenic diet, and then, reexamine the performance and body composition effects when the diets are modified with supplemental carbohydrate up to the newly defined "ketogenic threshold."

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
59

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Jan 2017

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2017

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

July 12, 2017

Completed
15 days until next milestone

First Posted

Study publicly available on registry

July 27, 2017

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2017

Completed
Last Updated

February 20, 2018

Status Verified

February 1, 2018

Enrollment Period

11 months

First QC Date

July 12, 2017

Last Update Submit

February 16, 2018

Conditions

Keywords

body compositionexercise performanceketo-adaptation

Outcome Measures

Primary Outcomes (2)

  • Change in Body Composition

    Will be measured as fat and lean soft tissue mass in kg by dual x-ray absorptiometry (DXA)

    0 and 10 weeks

  • Change in Anaerobic Cardiovascular Performance

    Will be measured as peak and average power output in Watts during a repeated Wingate sprint test

    0 and 10 weeks

Secondary Outcomes (29)

  • Change in Body Composition

    0 and 10 weeks

  • Change in Body Water

    0 and 10 weeks

  • Change in Cross-sectional Area

    0 and 10 weeks

  • Change in Muscle Thickness

    0 and 10 weeks

  • Change in Aerobic Performance

    0 and 10 weeks

  • +24 more secondary outcomes

Study Arms (4)

Carbohydrate Diet & Placebo & Exercise

PLACEBO COMPARATOR

This group receives the carbohydrate-based diet and flavored placebo pre-workout drink. All participate in the exercise intervention.

Other: Exercise

Carbohydrate Diet & Carbohydrate Supplement(Carb10) & Exercise

ACTIVE COMPARATOR

This group receives the carbohydrate-based diet and supplemental carbohydrate. Will be compared to Carbohydrate \& Placebo for effects of supplement. All participate in the exercise intervention.

Dietary Supplement: Carbohydrate Supplement (Carb10)Other: Exercise

Ketogenic Diet & Placebo & Exercise

EXPERIMENTAL

This group receives the ketogenic diet and flavored placebo. It is both an experimental (vs. carbohydrate diet \& placebo) and placebo control group (vs. ketogenic \& supplement). All participate in the exercise intervention.

Other: DietOther: Exercise

Ketogenic Diet & Carbohydrate Supplement (Carb10) & Exercise

EXPERIMENTAL

This group receives the ketogenic diet and supplemental carbohydrate. All participate in the exercise intervention.

Dietary Supplement: Carbohydrate Supplement (Carb10)Other: DietOther: Exercise

Interventions

2 of 4 arms will be supplemented with carbohydrate pre-workout (Carb10, Compound Solutions, Carlsbad, CA)

Carbohydrate Diet & Carbohydrate Supplement(Carb10) & ExerciseKetogenic Diet & Carbohydrate Supplement (Carb10) & Exercise
DietOTHER

2 groups will be on a carbohydrate-based diet (% energy from carbohydrate:fat:protein, 53:24:23) and 2 groups will be on a ketogenic diet (72:5:23)

Ketogenic Diet & Carbohydrate Supplement (Carb10) & ExerciseKetogenic Diet & Placebo & Exercise

All groups will participate in a standardized exercise intervention.

Carbohydrate Diet & Carbohydrate Supplement(Carb10) & ExerciseCarbohydrate Diet & Placebo & ExerciseKetogenic Diet & Carbohydrate Supplement (Carb10) & ExerciseKetogenic Diet & Placebo & Exercise

Eligibility Criteria

Age18 Years - 30 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • consistently exercising at least 3 days per week for the past 2 years, participating in both cardiovascular and resistance exercise at least once per week for the past 2 years, reported themselves as healthy, and were willing and able to comply with study protocols

You may not qualify if:

  • using tobacco of any form, a history of medical events, reporting any supplement or medication use that may affect study outcomes, regularly consuming \> 7 alcoholic beverages per week, appearing unfit to handle the training program, inability to complete baseline testing, having a BMI \> 35 kg/m2, or becoming \< 80% compliant with training or dietary interventions.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Texas Woman's University

Denton, Texas, 76204, United States

Location

Related Publications (4)

  • Volek JS, Freidenreich DJ, Saenz C, Kunces LJ, Creighton BC, Bartley JM, Davitt PM, Munoz CX, Anderson JM, Maresh CM, Lee EC, Schuenke MD, Aerni G, Kraemer WJ, Phinney SD. Metabolic characteristics of keto-adapted ultra-endurance runners. Metabolism. 2016 Mar;65(3):100-10. doi: 10.1016/j.metabol.2015.10.028. Epub 2015 Nov 2.

    PMID: 26892521BACKGROUND
  • Wilson JM, Lowery RP, Roberts MD, Sharp MH, Joy JM, Shields KA, Partl JM, Volek JS, D'Agostino DP. Effects of Ketogenic Dieting on Body Composition, Strength, Power, and Hormonal Profiles in Resistance Training Men. J Strength Cond Res. 2020 Dec;34(12):3463-3474. doi: 10.1519/JSC.0000000000001935.

    PMID: 28399015BACKGROUND
  • Burke LM, Ross ML, Garvican-Lewis LA, Welvaert M, Heikura IA, Forbes SG, Mirtschin JG, Cato LE, Strobel N, Sharma AP, Hawley JA. Low carbohydrate, high fat diet impairs exercise economy and negates the performance benefit from intensified training in elite race walkers. J Physiol. 2017 May 1;595(9):2785-2807. doi: 10.1113/JP273230. Epub 2017 Feb 14.

    PMID: 28012184BACKGROUND
  • Urbain P, Strom L, Morawski L, Wehrle A, Deibert P, Bertz H. Impact of a 6-week non-energy-restricted ketogenic diet on physical fitness, body composition and biochemical parameters in healthy adults. Nutr Metab (Lond). 2017 Feb 20;14:17. doi: 10.1186/s12986-017-0175-5. eCollection 2017.

    PMID: 28239404BACKGROUND

MeSH Terms

Interventions

DietExercise

Intervention Hierarchy (Ancestors)

Nutritional Physiological PhenomenaDiet, Food, and NutritionPhysiological PhenomenaMotor ActivityMovementMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological Phenomena

Study Officials

  • Jordan Joy, MS

    Texas Woman's University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Masking Details
Participants are blinded to the pre-workout drink content.
Purpose
OTHER
Intervention Model
PARALLEL
Model Details: Semi-randomized, parallel-group, single-blind diet and exercise intervention
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

July 12, 2017

First Posted

July 27, 2017

Study Start

January 1, 2017

Primary Completion

December 1, 2017

Study Completion

December 1, 2017

Last Updated

February 20, 2018

Record last verified: 2018-02

Data Sharing

IPD Sharing
Will not share

Locations