The Effect of a Caffeine Blend on Reaction Time, Mental Performance and Focus in Athletic Males

Completed · Not applicable

Conditions studied: Mental Fatigue

In brief

This is a cross-over design study in which subjects arrived to the lab and were assigned a supplement to ingest. Prior to ingestion subjects completed baseline reaction time testing along with a questionnaire. Thirty minutes after ingestion subjects filled out the same questionnaire, completed a reaction time test, followed by a series of dynamic exercises. After the last exercise was finished subjects filled out the questionnaire, completed another reaction time test and repeated the series of dynamic exercises. Following the exercises, subjects filled out the questionnaire and completed a fourth round of reaction time testing. In total subjects would complete 2 rounds of dynamic exercises and 4 rounds of reaction time testing with heart rate being recorded before and after the dynamic exercise rounds. Subjects were told to wash-out for 7 days and return to the lab to complete the same testing but on the alternative supplement.

Key facts

Study ID

NCT03019523

Run by

University of Mary Hardin-Baylor

People needed

31

Starts

2016-08-01

Expected to finish

2016-12-01

Last updated by the study team

2017-01-25

Who can join

Age: 18 and older, up to 25. Sex: male. Healthy volunteers: accepted.

You may qualify if…

• Subjects will be males between the ages of 18-25 years
• Subjects will be team sport athletes or highly trained
• Subjects will not be able to smoke or use tobacco
• Subjects has provided written and dated informed consent to participate in the study
• Subjects is willing and able to comply with the protocol
• Subjects is apparently healthy and free from disease, as determined by a health history questionnaire
• Subjects is a regular caffeine consumer (up to 2 cups of coffee a day)
• Subjects agrees to abstain from caffeine the day of each testing session
• Subjects agrees to abstain from exercise 24 hours prior to each testing visit. 48 hours prior to the testing session, the subject should not do anything new or unaccustomed in the form of exercise and should not increase the intensity of their workouts.
• Subject Exclusion Criteria
• Subject has not been participating in regular physical activity and exercise trained for at least 12 months prior to enrollment
• Subject is diagnosed with any metabolic or chronic disease, or is on prescription medication for the diagnosed metabolic or chronic disease
• Subject is using, or has used a dietary supplement (other than a multi-vitamin/-mineral, protein powder, or meal replacements) within 6 weeks prior to enrollment. Protein/Meal Replacement Products (MRPs) must not contain any supplements such as creatine, beta-alanine, hydroxyl methlybutyrate (HMB), etc.
• Subject is in, or has participated in another clinical trial within 8 weeks prior to enrollment
• Subject has a known allergy or sensitivity to caffeine or other stimulants (determined from health history questionnaire.

Where it is running

• UMHB Human Performance Lab — Belton, Texas, United States

Full record on ClinicalTrials.gov

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