Impact of Caffeine Intake on 800-m Running Performance and Sleep Quality in Trained Runners.
Nutrients
January 1, 1970
Domingo Jesús Ramos-Campo et al. (5 authors)
Journal ArticleRandomized Controlled TrialHuman StudyClinical
Extracted Claims (8)
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
caffeine ingestion | increase | athletic performance | - | - | improves | #1 |
caffeine ingestion | decrease | sleep quality | - | - | impairs | #2 |
caffeine intake | no change | nocturnal cardiac autonomic activity | trained runners | - | No significant differences | #3 |
caffeine intake | no change | 800-m running performance | trained runners | - | No significant differences | #4 |
caffeine supplement (CAF; 6 mg∙kg⁻¹) | decrease | sleep efficiency | trained runners | - | impaired | #5 |
caffeine supplement (CAF; 6 mg∙kg⁻¹) | increase | sleep latency | trained runners | - | increased | #6 |
caffeine supplement (CAF; 6 mg∙kg⁻¹) | increase | wake after sleep onset | trained runners | - | increased | #7 |
caffeine supplement (CAF; 6 mg∙kg⁻¹) | decrease | total sleep time | trained runners | - | decreased | #8 |
Abstract
BACKGROUND: Caffeine ingestion improves athletic performance, but impairs sleep quality. We aimed to analyze the effect of caffeine intake on 800-m running performance, sleep quality (SQ), and nocturnal cardiac autonomic activity (CAA) in trained runners. METHODS: Fifteen male middle-distance runners participated in the study (aged 23.7 ± 8.2 years). In a randomized and comparative crossover study design, the athletes ingested a placebo (PL) or caffeine supplement (CAF; 6 mg∙kg RESULTS: No significant differences in CAA and performance variables were found between the two conditions. However, CAF impaired sleep efficiency ( CONCLUSION: The supplementation with caffeine (6 mg∙kg
Medical Subject Headings (MeSH)
ActigraphyAdultAthletesAthletic PerformanceCaffeineCentral Nervous System StimulantsCross-Over StudiesDietary SupplementsExercise TestHeart RateHumansLactic AcidMaleRunningSleepYoung Adult
Study Links
PubMed ID31480553
Citation Metrics
Total Citations18
Citations/Year3.0
Relative Citation Ratio1.75
NIH Percentile70.4%
Research Impact Scores
APT Score0.75
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