Effect of a four-week ketogenic diet on exercise metabolism in CrossFit-trained athletes.

ABSTRACT:

Background

The ketogenic diet is becoming a popular nutritional model among athletes. However, the relationship between its use and metabolism during exercise seems to have not been fully investigated.

Methods

The aim of the study was to assess the effects of a four-week ketogenic diet (KD) on fat and carbohydrate (CHO) utilization during an incremental cycling test (ICT) in CrossFit-trained female (n = 11) and male (n = 11) athletes. During the ICT (while consuming the customary diet and after the KD), oxygen uptake and carbon dioxide exhalation were registered, and CHO and fat utilization as well as energy expenditure were calculated.

Results

In males, the KD led to an increase in fat utilization (g·min^- 1·kg_FFM^- 1 and % oxidation).

SUBMITTER: Durkalec-Michalski K 

PROVIDER: S-EPMC6451242 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature