Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Feb 12;5:6. doi: 10.3389/fnut.2018.00006

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2018 Bowtell, Mohr, Fulford, Jackman, Ermidis, Krustrup and Mileva.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Exercise duration and blood metabolite data. (A) Population average (±SEM, n = 9) time of exercise to task failure throughout the five sets (Ex1–Ex5) completed by the participants 1 h after taking caffeine (filled bars) or placebo (open bars) supplements. Changes in blood pH (D) as well as in the concentrations of glucose (B) and lactate (C) in the blood samples collected before and after each exercise set in the trials with caffeine (black squares) and placebo (open circles); ANOVA, p < 0.05: ^#main condition effect; *main time effect; ^†set × time interaction effect.