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To investigate the factors affecting your pulse after consuming caffeine.
Member rating: No Rating | Words: | Submitted: Tue Sep 16 2003
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SC1 Aim: To investigate the factors affecting your pulse after consuming caffeine. Prediction: In my science experiment/project I predict that the more caffeine that is consumed, the higher the pulse rate will be. I think this because at a low intake (less than 100mg caffeine in one drink) the effects will be minimal, but higher intakes (greater than 200mg) can produce changes in heart rate and blood pressure. This leads me to think that the more caffeine consumed results in a higher pulse rate. Coke drinks contain about 35 mg caffeine per standard 280 ml serving, with some 5% of the caffeine being a component of kola nuts and most of the remainder being added in the form of a by-product of the decaffeination of coffee and tea In the heart, this response prompts norepinephrine--also called noradrenalin--and a related neurotransmitter, epinephrine, to increase the rate and force of the muscle's contractions. Although the two act...
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