Ketogenic low carbohydrate, high fat diet in marathon runners

Not Applicable

• Conditions: Athletic performance nutrition; Body composition; Glycaemic control; Diet and Nutrition - Other diet and nutrition disorders; Physical Medicine / Rehabilitation - Other physical medicine / rehabilitation

• Registration Number: ACTRN12623000665639
• Lead Sponsor: Australian Catholic University

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2023-06-20
• Last Update Posted: 26 June 2023

Recruitment & Eligibility

• Status: ot yet recruiting
• Sex: All
• Target Recruitment: 50

Inclusion Criteria

Competitive marathon runners will be recruited from running clubs in the greater Sydney region in Australia.

To be considered ‘competitive’, runners must have previously competed in a marathon race with evidence of running a sub 4-hour marathon time (recorded within the past 3 years), be currently completing > 3 h/week training, and have > 2 years training experience.

At baseline, runners must be following Australian dietary guidelines for healthy eating which is considered a high carbohydrate diet.

Exclusion Criteria

Unable or unwilling to be randomized to either diet group for the 6 month diet intervention.

Unable or unwilling to enter and compete in the 2023 and 2024 Blackmores Sydney marathon.

Unable to participate in their usual training and competition schedules due to an injury or chronic illness at the study baseline.

Currently, or within the previous 12 months, consuming a low carbohydrate, high fat diet.

Unable or unwilling to attend laboratory-based testing sessions at the university laboratories located in Blacktown, NSW.

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Marathon race time is the primary outcome for this clinical trial. This outcome will be assessed via audit of the official marathon results. [Marathon race performances will be measured in a real-world setting of the 2023 (baseline) and 2024 (post intervention) September Sydney Marathon events. The Sydney marathon is a World Athletics Gold Label Marathon. ]