Effects
of caffeine ingestion on metabolism and exercise performance.
Effects
of caffeine ingestion on exercise testing: a meta - analysis Effects of caffeine on energy metabolism, heart rate, and methylxanthine metabolism in lean and obese women Authority Nutrition - Coffee: Good or Bad Caffeine and coffee: their influence on metabolic rate and substrate utilization in normal weight and obese individuals.
Sources: Effects
of caffeine ingestion on metabolism and exercise performance.
Scandinavian Journal of Medicine & Science in Sports, Volume 15, Issue 2, pages 69 — 78, April 2005 • D. Essig, D. L. Costill and P. J. Van Handel (1980) «Effects
of Caffeine Ingestion on Utilization of Muscle Glycogen and Lipid During Leg Ergometer Cycling.»
Not exact matches
In addition a recent review on hydration concluded that moderate
ingestion of caffeine (< 300 mg) does not promote dehydration (Ganio MS, et.
Per Medications and Mother's Milk (Hale 2017, p. 139 - 140)
caffeine is in Lactation Risk Category L2 (safer); milk levels are quite low (0.06 - 1.5 %
of maternal dose) and usually peak 1 - 2 hours after
ingestion.
Ingestion of large amounts
of tea may cause nutritional and other problems because
of the strong binding activities
of tea polyphenols and the
caffeine content, although no solid data exist concerning harmful effects
of tea consumption.
Efficacy
of acute
caffeine ingestion for short - term high - intensity exercise performance: a systematic review.
Ingestion of 1.1 mg
of caffeine per kilogram
of body weight may result in blood
caffeine levels 0.5 - 1.5 mg / liter blood [25].
In sensitive persons,
caffeine ingestion may trigger allergic reaction with rash, hives, itching, difficulty breathing, tightness in the chest, or swelling
of the face, lips and tongue [105].
11 out
of 17 studies showed
caffeine ingestion yielded significant improvements in exercise performance.
With regards to exercise, a study by Maridakis et al [3] found that moderate
ingestion of caffeine (5 mg per kg body weight - around the equivalent
of 2 cups
of coffee) produced a large reduction in pain resulting from eccentric exercise — induced, delayed - onset muscle injury by ~ 48 %.
As the response to
caffeine consumption is variable, athletes need to determine whether the
ingestion of lower amounts
of caffeine before and / or during training and competitions is ergogenic on an individual basis10.
Conclusion «
Caffeine might not attenuate the ergogenic benefits of creatine, if the ingestion of caffeine occurred after the creatine loading phase», the Taiwanese su
Caffeine might not attenuate the ergogenic benefits
of creatine, if the
ingestion of caffeine occurred after the creatine loading phase», the Taiwanese su
caffeine occurred after the creatine loading phase», the Taiwanese summarise.
Astorino T.A. et al. (2009), J. Efficacy
of Acute
Caffeine Ingestion for short - term high - intensity exercise performance: A Systematic Review.
Impact
of acute
caffeine ingestion on endothelial function in subjects with and without coronary artery disease.
While this may be over exaggerated at times, there is a heap
of evidence to show that
caffeine ingestion pre exercise will lead to improvements in performance and reductions in sensation
of effort — effectively meaning that we feel as if we are doing less work when we are in fact working harder than ever.
Excessive
caffeine ingestion leads to symptoms that overlap with those
of many psychiatric disorders.
Bell DG, Jacobs I, Ellerington K. Effect
of caffeine and ephedrine
ingestion on anaerobic exercise performance.
Dog
caffeine poisoning symptoms appear within 2 hours after
ingestion as the result
of the stimulating effect
of the chemical.
Subjects who drank more than the equivalent
of 2 cups
of coffee per day (300 mg
of caffeine per day) were also excluded, as were subjects who experienced
caffeine withdrawal symptoms (such as irritability, flushing, or headache) temporally associated with
caffeine ingestion.