Does a Caffeine Gum Improve 5 km Run Performance in a Competition/Field Setting?
Does a Commercial Caffeine Supplement Improve 5 km Run Performance in a Field Setting?
1 other identifier
interventional
36
1 country
1
Brief Summary
The purpose of this study is to determine whether caffeine gum improves the performance of runners completing free timed mass participation 5 km runs in the United Kingdom (UK)
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable
Started Jun 2015
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 1, 2015
CompletedFirst Submitted
Initial submission to the registry
June 12, 2015
CompletedFirst Posted
Study publicly available on registry
June 16, 2015
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 1, 2016
CompletedStudy Completion
Last participant's last visit for all outcomes
January 1, 2016
CompletedApril 19, 2016
April 1, 2016
7 months
June 12, 2015
April 18, 2016
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Change in 5 km run time
The difference in finishing time on placebo v caffeine; recorded in seconds
calculated after 2nd run (runs separated by 7 days)
Secondary Outcomes (1)
Change in ratings of perceived exertion (RPE)
calculated after 2nd run (runs separated by 7 days)
Other Outcomes (2)
Change in pacing
calculated after 2nd run (runs separated by 7 days); placebo v caffeine
Change in average heart rate
calculated after 2nd run
Study Arms (3)
Caffeine gum
EXPERIMENTALcaffeine (300 mg) in gum form x 1 ingestion
Placebo gum
PLACEBO COMPARATORplacebo gum consumed x 1 ingestion
Non-intervention group
NO INTERVENTIONA third group of runners will be used to adjust for changes in environmental conditions. They will complete 2 runs without consuming either placebo or experimental treatment
Interventions
Eligibility Criteria
You may qualify if:
- Healthy adult runners with evidence of having recently ran 5 km in under 25 minutes
You may not qualify if:
- Current musculoskeletal injury, history of adverse response to caffeine, presence or history of cardiovascular disease, heart rhythm disorders or hypertension.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Sheffield Hallam University
Sheffield, South Yorkshire, S1 1WB, United Kingdom
Related Publications (1)
Lynn A, Shaw C, Sorsby AC, Ashworth P, Hanif F, Williams CE, Ranchordas MK. Caffeine gum improves 5 km running performance in recreational runners completing parkrun events. Eur J Nutr. 2024 Jun;63(4):1283-1291. doi: 10.1007/s00394-024-03349-3. Epub 2024 Feb 24.
PMID: 38400919DERIVED
Study Officials
- PRINCIPAL INVESTIGATOR
Anthony Lynn, PhD
Sheffield Hallam University
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
- Intervention Model
- CROSSOVER
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Senior Lecturer in Nutrition
Study Record Dates
First Submitted
June 12, 2015
First Posted
June 16, 2015
Study Start
June 1, 2015
Primary Completion
January 1, 2016
Study Completion
January 1, 2016
Last Updated
April 19, 2016
Record last verified: 2016-04