The purpose of the study was to explore the effect of varying doses of caffeine intake on the physiological responses among university hockey players in performance. A total of sixty-four (64) hockey players consisting of 32 males and 32 females participated in the study. The hypotheses are that there would be no significant difference in the responses of different doses of caffeine intake on resting systolic blood pressure, diastolic blood pressure, heart rate, vital capacity, and Maximum Oxygen uptake of hockey players in tertiary educational institutions in Edo State. The test instrument used was an adaptation of a 3-Cone shuttle drill fitness testing exercise battery as developed by Koen, Honkemper, and Pietrispens (2001). A quasi-Experimental research design was used for the study. Hockey players in the three experimental groups made up of 16 players (8 males and 8 females) each were subjected to the ingestion of three (3) separate doses of 260mg, 520mg, and 780mg respectively of strong black unsweetened coffee in cups, one hour before testing. The control group of 16 players (8 males and 8 females) was not exposed to the ingestion of coffee but the ingestion of locally prepared “zobo” drink. Descriptive statistics of mean, range, and standard deviation as well as One-Way Analyses of Variance (ANOVA) were respectively used to descriptively analyze the data and test the hypotheses at a 0.05 significant level. The results showed that there were statistically significant differences in the players’ responses to caffeine intake on the resting systolic blood pressure, resting diastolic blood pressure, resting heart rate, and Maximum Oxygen Consumption (VO2max) among the hockey players. No significant difference was recorded in the responses to caffeine intake on the vital capacity of the hockey players. Specifically, although each of the three various doses (260mg, 520mg, and 780mg) was able to effect significant physiological positive changes, a dose of 260mg was spotted as the best dosage for effective physiological improvements in hockey performance.
Agwubike, E. (2005). Physiology of muscular activities: Theory through question-and-answer approach.
Archna, S., & Jaspal. (2008). The effect of different dosages of caffeine on isometric strength and isometric endurance. Journal of Exercise Physiology, 6, 34–43.
Armstrong, L. (2002). Caffeine, body fluid-electrolyte balance and exercise performance. International Journal of Sport Nutrition and Exercise Metabolism, 189–206.
Bahia, S., Fernandez De Aguiar, P., Lopez, A., Barreto, G., Siquiera, A., Gualberto, H., Martin, E., & Radler De Aquino, F. (2006). Effects of caffeine (3mg) on maximal oxygen consumption plasmatic lactate and reaction time after maximum effort. International Journal of Sports Science, 5, 42–52.
Basset, D., & Howley, E. (2000). Limiting factors for maximum oxygen uptake and determinants of endurance. Journal of Neurophysiology, 6, 1936–1940.
Bishop, D. (2010). Dietary supplements and team-sport performance. Sports Medicine, 12, 995–1017.
Efe-Aigbovo, A., & Imagbovomwan Iyawe, V. (2022). Effects of varying doses of caffeine intake on physiological responses among university hockey players in Edo State. Nigeria. Exercise and Quality of Life, 1, 17–24. https://doi.org/10.31382/eqol.220602
Farag, N., Whitsett, T., Mckey, E., Wilson, M., Vincent, A., Everson-Rose, & Lovallo, W. (2010). Caffeine and blood pressure response: Sex, age and hormonal status. Journal of Women’s Health, 1171–1176.
George, R., Light, R., Matthey, R., & Matthey, M. (2005). Clinical pulmonary function testing, exercise testing and disability evaluation in chest medicine: Essentials of Pulmonary and Critical Care Medicine. 5, 665–667.
Glynn, A., & Fiddler, H. (2009). Introduction to exercise physiology in the physiotherapist’s pocket guide to exercise: assessment, prescription and training. 1–11.
Graham, T. (2001). Caffeine and exercise: Metabolism, endurance and performance. Journal of Sports Medicine, 11, 785–807.
Graham, T., & Spriet, L. (1991). Performance and metabolic response to a high caffeine dose during prolonged exercise. Journal of Applied Physiology, 6, 2292–2298.
Griffith, D. (2008). Aspx? Direct = true & db = nth & AN =ZW62 W663951.
Grobbee, D., Rimm, E., Giovannucci, E., Colditz, G., Stampfer, M., & Willett, W. (1990). Coffee, caffeine and cardiovascular disease in men. The New England Journal of Medicine, 1026–1032.
Iyawe, V., Igweh, J., Orie, N., & Umapathy, E. (1990). Time course and bronchodilator effect of caffeine in young Nigerians. Nigeria Journal of Physiological Science, 50–56.
Jensen, C. (2009). Caffeine and athletic performance.
K901B, UK.Lloyds Pharmacy Limited Coventry CV2 2TX. (2003). Heart Rate Monitor and Chest Transmitter.
Koen, A., Honkemper, M., Rispen’s, P., & P. (2001). Reliability of the Groningen fitness test for the elderly. Journal of Aging and Physical Activity, 194–212.
Lancu, I., Olmer, A., & Strous, J. (2007). Caffeienism: History, clinical features, diagnosis and treatment.
Leonard, T., Watson, R., & Mohs, M. (1987). The effects of caffeine on various body system: A review. Journal of American Diet Association, 1048–1053.
Lichtenstein, A. (2002). Caffeine’s effect on blood pressure. WebMD Health News Archive.
Mcdaniel, L., Mcintire, K., Streitz, C., Jackson, A., & Gaudet, L. (2010). The effects of caffeine on athletic performance College Teaching. Methods & Styles Journal, 1, 33.
Mla ; Efe-Aigbovo, A., Imagbovomwan Iyawe ; Agharese, V., Imagbovomwan, V., & Iyawe. (2022). Effects of varying doses of caffeine intake on physiological responses among university hockey players in Edo State, Nigeria. Exercise and Quality of Life, 1, 17–24.
Molt, R., O’cannor, P., & Dishman, R. (2003). Effect of caffeine on perception of leg muscle pain during moderate-intensity cycling exercise. Journal of Pain, 6, 316–321.
Molt, R., O’cannor, P., Tubandt, L., Puetz, T., & Ely, M. (2006). Effect of caffeine on leg muscle pain during cycling exercise among female. Medicine and Science in Sports and Exercise, 3, 598–604.
Myers, M. (2004). Effects of caffeine on blood pressure beyond laboratory.
Olbrantz, S., & Peterson, M. (2007). Caffeine and college: The perceived effects of caffeine on heart rate and alertness. UW-L Journal of Undergraduate Research, 4, 125–132.
Palusca, S. (2003). Caffeine and exercise. Current Sports Medicine Report, 213–219.
Penagiotakos, D., Pitsavos, C., Chrysohoau, L., Kokkinos, P., Toutouzas, P., & Stefanadis, C. (2003). The J-Shape effect of coffee consumption on the risk of developing acute coronary syndrome: The CARDIO2000 case-control study. The Journal of Nutrition, 3228–3232.
Potterhead, S. (2008). caffeine nursing research-chapter. 1.
Rist, J. (2010). Caffeine and Athlete.
Roberts, A., De Jonge-Levitan, L., Parker, C., & Greenway, F. (2005). The effect of an herbal supplement containing black tea and caffeine on metabolic parameters in humans. Alternative Medicine Review, 4, 321–325.
Sokman, B., Armstrong, L., Kreamer, W., Casa, D., Daas, J., Judelson, D., & Maresh, C. (2008). Food and Nutrition: How much caffeine is in your daily habit? Mayo Clinic. Journal of Strength Conditioning Research, 978–986.
Wallman, K., Goh, J., & Guelfi, K. (2010). Effects of caffeine on exercise performance in sedentary females. Journal of Sports Science and Medicine, 183–189.
Weinberg, B., & Bealer, B. (2002). The world of caffeine: The science and culture of the world’s most popular drug.
Wilcox, A. (1985). Effects of caffeine and exercise on body fat. International Journal of Sports Medicine, 6, 332–334.
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