Ketone Supplementation and Exercise Performance

Not Applicable

• Conditions: Ketosis; Exercise Performance; Ketoses, Metabolic
• Interventions: Behavioral: Baseline 10 km time trial; Behavioral: 10 km time trial; Behavioral: Baseline 30s Wingate; Behavioral: 30s Wingate; Dietary Supplement: Ketone

• Registration Number: NCT03954665
• Lead Sponsor: Western University, Canada

Brief Summary

The purpose of this study is to observe the effects of exogenous ketone supplements during shorter bouts of exercise testing on twenty collegiate endurance trained athletes (18-25 years of age).

Detailed Description

Some believe very high fat diets (\>70% energy) can enhance exercise performance by providing additional fuel (ketones) for energy metabolism, at least for very prolonged exercise (\>3-4h). Regardless, this diet is difficult to maintain so it has been suggested that ingesting ketone salts along with a normal carbohydrate (CHO) diet might be more practical. The purpose of this study is to observe the effects of ketone salt ingestion on shorter term (up to \~15 min) exercise performance. Endurance trained (≥2 year training experience; ≥7 h/week) collegiate athletes (n=20) of similar body mass (♀; 55-60kg; ♂; 75-80kg) and age 18-25y) consuming 5-6g CHO•kg-1•d-1) will be tested before and after 1 and 7d of ketone salt (Prüvit, Carrollton TX, US) supplementation (0.6-0.8g•kg-1•d-1). Participants will perform two exercise performance tests (a 10km cycle time trial and a 30s Wingate cycle test on separate days) before and after supplementation. Blood samples (glucose, lactic acid, and ketone concentration) will be taken at: baseline and following each performance test. It is hypothesized that ketone salt supplementation will increase blood ketone concentration but will not enhance these exercise performance tests.

Study Timeline

• Status Verified: 2019-04
• Study First Submitted: 2019-05-06
• Study First Submitted QC: 2019-05-16
• Study First Posted: 2019-05-17
• Last Update Submitted: 2019-07-22
• Last Update Posted: 2019-07-23
• Study Start: 2019-09
• Primary Completion: 2020-01
• Study Completion: 2020-03

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

• Healthy male or female Collegiate Endurance Trained Athletes
• ≥2 year training experience; ≥7 h/week
• Ages 18-25

Exclusion Criteria

• Smoker
• Injury that will affect exercise performance
• Sedentary Behaviour
• Currently following a High Fat diet/Ketogenic diet
• Taking Beta Blockers or Hypertension Medication
• Has Respiratory, Cardiovascular and/or Neuromuscular disease that is not cleared for exercise by a physician.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Baseline Testing	Baseline 30s Wingate	Baseline testing for a 10km cycle time trial and a 30s Wingate cycle test.
Baseline Testing	Baseline 10 km time trial	Baseline testing for a 10km cycle time trial and a 30s Wingate cycle test.
Dietary Supplement: Exogenous Ketone Salt	30s Wingate	Ketone salt supplementation (0.6-0.8g•kg-1•d-1) 7-days. Participants will perform two exercise performance tests (a 10km cycle time trial and a 30s Wingate cycle test on separate days) after supplementation.
Dietary Supplement: Exogenous Ketone Salt	Ketone	Ketone salt supplementation (0.6-0.8g•kg-1•d-1) 7-days. Participants will perform two exercise performance tests (a 10km cycle time trial and a 30s Wingate cycle test on separate days) after supplementation.
Dietary Supplement: Exogenous Ketone Salt	10 km time trial	Ketone salt supplementation (0.6-0.8g•kg-1•d-1) 7-days. Participants will perform two exercise performance tests (a 10km cycle time trial and a 30s Wingate cycle test on separate days) after supplementation.

Primary Outcome Measures

Name	Time	Method
10 km Time trial	15-20 Minutes	10km time trial where participants will be measured on time to completion
30s Wingate	30 seconds	30s Wingate all out test where participants will be measured on their peak power output

Secondary Outcome Measures

Name	Time	Method
Blood Glucose	1-2 hours	Blood Glucose will be measured using a Blood glucose meter
Blood Lactate	1-2 hours	Blood Lactate will be measured using a lactate meter
Blood Ketones	1-2 hours	Blood Ketones will be measured using a ketone meter

Trial Locations

Locations (1)

Exercise Nutrition Laboratory, Western University; 🇨🇦 London, Ontario, Canada