Study

Caffeinated chewing gum increases repeated sprint performance and augments increases in testosterone in competitive cyclists. – Cost Effective Supplements

Caffeinated chewing gum increases repeated sprint performance and augments increases in testosterone in competitive cyclists.

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http://www.ncbi.nlm.nih.gov/pubmed/20737165


Conclusion of this study

In contrast, cortisol concentrations were not elevated until after the third exercise set; following the caffeine treatment cortisol was reduced by 21 ± 31% (ES -0.30; ± 0.34) relative to placebo. The acute ingestion of caffeine via chewing gum attenuated fatigue during repeated, high-intensity sprint exercise in competitive cyclists. Furthermore, the delayed fatigue was associated with substantially elevated testosterone concentrations and decreased cortisol in the caffeine trials.


Supplements analyzed in this study

Caffeine

Health conditions analyzed in this study

Fatigue


Slightly Positive
Caffeine


Functions related to this study

Energy


Slightly Positive
Caffeine

Muscle building


Moderately Positive
Caffeine

Overall health


Slightly Negative
Caffeine

Testosterone


Slightly Positive
Caffeine


Body systems related to this study


Endocrine System

Muscular System

Nervous System
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