Effects of Caffeine-Taurine Co-Ingestion on Repeated Sprint Ability, Rating of Perceived Exertion, Blood Lactate, Blood Glucose, & Heart Rate in Team Sport Athletes

Muhamad Mohsin, Muhamad Akif (2018) Effects of Caffeine-Taurine Co-Ingestion on Repeated Sprint Ability, Rating of Perceived Exertion, Blood Lactate, Blood Glucose, & Heart Rate in Team Sport Athletes. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

The purpose of this study was to examine the effects of caffeine, taurine, and co-ingestion on repeated sprint ability (RSA), and physiological responses in team sport athletes. A total of 9 team sport athletes (age: 19.3 ± 1.7, weight: 62.9 ± 6.9 kg, height: 150.4 ± 46.8 cm, VO2max: 44.5 ± 4.5 ml.kg.min-1) participated in this study. Subjects underwent 1 preliminary trial and 4 experimental trials (caffeine, taurine, co-ingestion, & placebo trials). Each trial consisted of 6 runs times 20 meter for 5 sets (adopted from Carr et al., 2006). Each trial was separated for at least seven days. Results showed that only caffeine trial (100.0 ± 4.4 seconds) had improve significantly (4.3% faster) as compared to placebo trial (105.3 ± 5.9 sec) (p=0.03). While there are no significant difference was found for other trials (taurine: 101.7 ± 5.3 sec, co-ingestion: 103.8 ± 5.8 sec). For heart rate, caffeine trial has the highest value (193.7 ± 42.1 bpm) followed by taurine (185.9 ± 8.6 bpm), placebo (181.3 ± 12.0 bpm), and co-ingestion being the lowest (179.4 ± 12.6 bpm). For blood lactate responses, caffeine trial has the highest value (8.7 ± 1.9 mmol.L-1), followed by coingestion (8.3 ± 2.5 mmol.L-1), taurine (7.9 ± 3.2 mmol.L-1), & placebo (7.9 ± 1.9 mmol.L-1) trials. For blood glucose, caffeine trial has the highest value (6.9 ± 0.9 mmol.L-1), followed by coingestion (6.6 ± 0.9 mmol.L-1), taurine (6.3 ± 1.2 mmol.L-1), & placebo (5.9 ± 0.6 mmol.L-1). For RPE, taurine trial has the highest value (16.3 ± 3.9) followed by placebo (16.2 ± 1.9), co-ingestion (15.8 ± 3.3) & caffeine has the lowest value (14.9 ± 3.9). In conclusion, this study showed 200mg caffeine ingestion improved overall time trial for RSA.