Is green tea beneficial to athletic performance?
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GREEN TEA Ruchi Shah Sports Nutritionist, Weight Management Counselor and Professional Health Blogger http:// healthandnutrition.co.in
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Green tea is effective due to the presence of chemical compound polyphenol which is a type of antioxidant that fight against free radicals.
Transcript of Is green tea beneficial to athletic performance?
GREEN TEARuchi Shah
Sports Nutritionist, Weight Management Counselor and Professional Health Blogger
http://healthandnutrition.co.in
INTRODUCTIONCommon Names: green tea, Chinese
tea, Japanese tea
Latin Name: Camellia sinensis
The first reference to green tea is in 2737 B.C. by
Chinese emperor Shennong.
Green tea is effective due to the presence of chemical
compound polyphenol.
Polyphenols are a type of antioxidant. They neutralize
dangerous molecules known as reactive oxygen species.
Thus preventing the possibility of cancerous cells.
ACTIVE CONSTITUENTS
GREEN TEA
CATECHINS
epicatechin (EC), epigallocatechin (EGC),
epicatechin gallate (ECG) and epigallocatechin
gallate (EGCG).
FLAVANOLS
DOSAGE
The effective dosage = 125-
500mg/day
(4-10 cups per day) of an extract
standardized to at least 60%
Polyphenols
RESEARCH ARTICLES
Consumption of green tea favourably affects oxidative stress markers in weight-trained men
Consumption of GT, a beverage rich in polyphenols, may offer protection against the oxidative damage caused by exercise. ( Panza VS, et al 2008)
CONTROL GROUP GREEN TEA EXTRACT GROUP
ferric reducing ability of plasma.(FRAP)
No change
reduced glutathione (GSH)
lipid hydroperoxide (LH) No change
thiobarbituric acid-reactive substances
No change
creatine kinase (CK), No change
aspartate aminotransferase (AST)xanthine oxidase (XO) No change
Hypoxanthine No change
uric acid (UA). No change
No effects of three-week consumption of a green tea extract on time trial performance in endurance-trained men.( Eichenberger P et al,2010)
no significant effect on performance, energy metabolism,
or any other measured parameter
did not affect time trial performance and energy
metabolism in endurance-trained men in the non-fasting
state
except for CRP, which was significantly reduced (p =
0.045) after GTE supplementation compared to placebo.
Effect of a Single Dose of Green Tea Polyphenols on the Blood Markers of Exercise-Induced Oxidative Stress in Soccer Players. ( Ewa Jówko et al,2012)
In both groups, plasma TBARS, UA and TAS increased
significantly post-exercise
SOD activity in erythrocytes did not change significantly in
response to the muscular endurance test
in both groups plasma CK activity increased significantly
after 24 hours of recovery.
However, GTP was found not to exert a significant effect on
measured parameters.
CONCLUSION:
Acute ingestion of GTP (640 mg) does not attenuate exercise-
induced oxidative stress and muscle damage.
