Academic literature on the topic 'Caffeine containing products'
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Journal articles on the topic "Caffeine containing products"
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Samoggia, Antonella, and Tommaso Rezzaghi. "The Consumption of Caffeine-Containing Products to Enhance Sports Performance: An Application of an Extended Model of the Theory of Planned Behavior." Nutrients 13, no. 2 (January 24, 2021): 344. http://dx.doi.org/10.3390/nu13020344.
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Caffeine is the most-used psychoactive substance in the world. About 80% of the world’s population consumes caffeine every day, including athletes and lifestyle users. Thus, it is important to understand the consumer drivers of caffeine-containing beverages and food. This research study aims to explore consumers’ behaviors, perceptions, attitudes, and drivers towards caffeine-containing products to enhance sports performance. The research applies the Theory of Planned Behavior (TPB) in order to understand consumers’ behavior, extended with utilitarian aspects for a comprehensive understanding of consumers’ behavior and attitudes. We interviewed consumers with the support of Qualtrics online software. The data were then processed with SPSS (statistical analysis software). The data elaboration includes a multivariate linear regression model to analyze the consumers’ intention to consume caffeine to enhance the sports performance, and to explore consumers’ preference of marketing leverages for this product category. The results contribute to an understanding of consumers’ consumption and purchasing behavior towards caffeine, and support the validity of the extended TPB to develop a more comprehensive picture of consumer behavior. Consumers have a positive attitude towards caffeine-containing products to enhance sports performance. The main consumer behavior drivers are subjective norms and utilitarian aspects. The present research results may support companies in the development of caffeine-containing products to enhance sports performance.
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Błaszczyk-Bębenek, Ewa, Beata Piórecka, Monika Kopytko, Zuzanna Chadzińska, Paweł Jagielski, and Małgorzata Schlegel-Zawadzka. "Evaluation of Caffeine Consumption among Pregnant Women from Southern Poland." International Journal of Environmental Research and Public Health 15, no. 11 (October 26, 2018): 2373. http://dx.doi.org/10.3390/ijerph15112373.
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Caffeine is the most widely consumed stimulant worldwide, including by pregnant women. Products containing caffeine should be limited in accordance with the recommendations for pregnancy. The purpose of this study was to evaluate consumption of caffeinated products and daily caffeine intake from food by pregnant women. The study was conducted on a group of healthy pregnant women: attendees of antenatal classes (n = 70) and patients of an outpatient gynecological clinic (n = 70) from Krakow (Southern Poland). A questionnaire about the frequency of consumption of selected foods and drinks containing caffeine was used. The average caffeine content in food products obtained from other Polish studies was used to estimate average daily caffeine intake in our study group. Mean daily caffeine intake was 49.60 ± 59.15 mg/day and the maximum was 498.0 mg/day. The main sources of caffeine were as follows: black tea (bags, leaf), instant coffee and ground coffee. No statistically significant differences in caffeine intake between the groups were found. A weak negative correlation (rs) = −0.28 (p = 0.0208) between month of pregnancy and caffeine intake was observed among attendees of antenatal classes. Mean daily caffeine intake did not exceed the maximum recommended dose in our study group.
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Johnson-Greene, Douglas, Michael Fatis, Donna Sonnek, and Carita Shawchuck. "A Survey of Caffeine Use and Associated Side Effects in a College Population." Journal of Drug Education 18, no. 3 (September 1988): 211–20. http://dx.doi.org/10.2190/6a9p-6q58-vjw9-2jjx.
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While caffeine ingestion is commonplace, there is a relative lack of research on normative standards of caffeine consumption. The present investigation surveyed two hundred and seventy students at a midwestern state university concerning their consumption of various caffeine products. The results of the investigation suggest that there is an identifiable group of individuals who use excessive amounts of caffeine. The survey has also identified several deleterious effects that may be related to caffeine use. The most important finding of the study was that roughly 75 percent of the individuals who use caffeinated products rarely sought information concerning the caffeine content of the products they were using nor did they attempt to avoid substances containing caffeine. Suggestions for education and prevention are offered.
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Fagerstrom, Karl. "A Comparison of Dependence across Different Types of Nicotine Containing Products and Coffee." International Journal of Environmental Research and Public Health 15, no. 8 (July 30, 2018): 1609. http://dx.doi.org/10.3390/ijerph15081609.
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Introduction: Few studies have compared the dependence to different tobacco and nicotine products. Even less is known about how it relates to dependence on other common drugs, e.g., caffeine. In this study degree of dependence was compared between snus, cigarettes, nicotine replacement (NR), electronic cigarettes and coffee. Methods: A random sample of Swedish citizens belonging to an internet panel were contacted from September to October 2017. The responders were asked among other related things about their use of snus, NR, traditional cigarette or e-cigarette use and coffee consumption. The indicators of dependence used were: (A) the Heavy Smoking Index, (B) The proportions that used within 30 min after raising in the morning, (C) rating the first use in the morning as the most important and (D) Stating that it would be very hard to give up entirely. Results: Significantly fewer coffee drinkers started use within 30 min of awakening compared with all other products. The first use of the day was found to be more important for snus users compared with other products. On HSI there was no difference between snus and cigarettes. Snus and cigarettes were rated as being more difficult to give up than NR and coffee. Conclusion: Dependence to traditional cigarettes and snus seem to be relatively similar while NR was rated lower and coffee lowest. Since the prevalence of caffeine use in all forms is so much more prevalent than nicotine there might be more persons in the society heavily dependent on caffeine. Implication: Tobacco products are likely more dependence forming than NR products and coffee although there might be more people dependent on caffeine. The addiction to coffee or caffeine is seldom discussed in the society probably because of the little or no harm it causes. Funding: The Snus Commission in Sweden (snuskommissionen) funded the data collection. No funding used for the analysis and writing of manuscript.
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Chiang, W.-F., M.-T. Liao, C.-J. Cheng, and S.-H. Lin. "Rhabdomyolysis induced by excessive coffee drinking." Human & Experimental Toxicology 33, no. 8 (November 12, 2013): 878–81. http://dx.doi.org/10.1177/0960327113510536.
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Excessive ingestion of caffeine-containing beverages is a rare cause of rhabdomyolysis. Here, we describe the case of a 44-year-old woman presented with nausea, vomiting, palpitations, and tea-colored urine 6 h after drinking a liter of black coffee containing approximately 565 mg of caffeine for mental alertness. Laboratory studies were notable for myoglobinuria and markedly elevated plasma creatine kinase (CK) level of 7315 U/L. With volume expansion and alkalization, her plasma CK level returned to normal within 5 days. Rhabdomyolysis should be considered a potential health hazard from excessive consumption of caffeine-containing products.
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Stachyshyn, Saskia, Ajmol Ali, Carol Wham, Tayla Knightbridge-Eager, and Kay Rutherfurd-Markwick. "Caffeine Consumption Habits of New Zealand Tertiary Students." Nutrients 13, no. 5 (April 28, 2021): 1493. http://dx.doi.org/10.3390/nu13051493.
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Adverse effects associated with excessive caffeine consumption combined with increasing numbers and availability of caffeine-containing products are causes for concern. Tertiary students may be at increased risk of consuming excessive amounts of caffeine due to seeking caffeinated products with well-known wakefulness effects and cognitive benefits. This study explored caffeine consumption habits of New Zealand tertiary students (317; ≥16-years) using a previously validated caffeine consumption habits (CaffCo) questionnaire. Most (99.1%) regularly consumed caffeinated products, especially chocolate, coffee and tea, with coffee, tea and energy drinks contributing most to total caffeine intake. Median estimated caffeine intake was 146.73 mg·day−1, or 2.25 mg·kgbw−1·day−1. Maximum and minimum intakes were 1988.14 mg·day−1 (23.51 mg·kgbw−1·day−1) and 0.07 mg·day−1 (0.02 mg·kgbw−1·day−1), respectively. One-third (34.4%) of caffeine consumers ingested caffeine above the adverse effect level (3 mg·kgbw−1·day−1) and 14.3% above the safe limit (400 mg·day−1). Most caffeine consumers (84.7%), reported experiencing at least one ‘adverse symptom’ post-caffeine consumption, of which 25.7% reported effects leading to distress or negatively impacting their life. Experiencing ‘adverse symptoms’ did not, however, curtail consumption in the majority of symptomatic participants (~77%). Public health initiatives directed at tertiary students may be important to reduce potential caffeine-related harm.
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Musharraf, Fatima Fakhir, Asad Ali Siddiqui, Muhammad Mustafa Ali, Shazia Fakhir Durrani, Fatima Abid, and Aijaz Qureshi. "Assessment of Trends of Consumption of Caffeine Containing Products and their Effects on Medical Undergraduate Students." Journal of Bahria University Medical and Dental College 13, no. 01 (December 30, 2022): 56–60. http://dx.doi.org/10.51985/jbumdc202293.
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Objectives: To assess trend of consumption and withdrawal effects from caffeine containing products among medical undergraduate students of Karachi. Study design and setting: Cross-sectional study conducted via web-based questionnaire, from January 2020 to June 2021. Methodology: Undergraduate medical, MBBS students aged 18-24 years, studying in 6 different medical universities of Karachi were included in the study. An online survey was conducted. An online questionnaire was designed which consisted of 28 self-made questions that focused on collecting basic sociodemographic information, coffee consumption habits, and any adverse event associated with caffeine intake. The questionnaire was posted online and undergraduate medical students were invited to participate in the study. Results: One hundred and fifty seven students participated in the study. Out of 157 students 94% admitted to consuming some form of caffeine containing product (CCP), with 42.3% (n = 66) of the total believing that they were addicted to caffeine. A significant number also believed that CCPs helped students deal with their problems. Withdrawal symptoms include migraines, sleep disturbances, and loss of focus, leading to an inability to perform daily tasks. A positive correlation was also found between the daily intake of any CCP and incidence of withdrawal symptoms (p=0.01). Conclusion: Many students in medical universities of Karachi are moving towards caffeine dependence, due to daily consumption over a prolonged period of time. Promoting responsible consumption habits and spreading awareness over potential adverse effects of CCPs, especially amongst a younger audience could improve the health and lifestyles of students in the long-term
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Lieberman, Harris R. "Why Are Certain Caffeine-Containing Products Associated With Serious Adverse Effects?" Mayo Clinic Proceedings 95, no. 8 (August 2020): 1562–64. http://dx.doi.org/10.1016/j.mayocp.2020.06.032.
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Błaszczyk-Bębenek, Ewa, Paweł Jagielski, and Małgorzata Schlegel-Zawadzka. "Caffeine Consumption in a Group of Adolescents from South East Poland—A Cross Sectional Study." Nutrients 13, no. 6 (June 18, 2021): 2084. http://dx.doi.org/10.3390/nu13062084.
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Caffeine is the most common psychoactive substance available to adults, as well as to children and adolescents. The safety of its use in younger age groups requires further research. The aim of this study was to evaluate caffeine intake, to identify products and drinks that are the main sources of caffeine intake in the diet of the subjects and the risk of excessive caffeine intake with the diet of adolescents, stratified by gender. A cross-sectional study was conducted among 508 adolescents aged 16–18 years from southern Poland. Black tea, cola-based soft drinks and milk chocolate were the most frequently consumed products containing caffeine in the diet of the examined persons. The average caffeine intake was 95.54 mg/day (1.54 mg/kg b.w.). In 12.2% of the subjects the dose of 3 mg/kg b.w./day was exceeded, and in over 41.3% the dose causing sleep disorders was exceeded. The dose causing anxiety was also exceeded in 18.1% of the respondents, significantly more often in girls than boys (p = 0.0487).
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Diamai, Siewdorlang, Icydora Kharkongor, Eveningstar Ryntathiang, and Rodridge Russel Kharbudon. "Caffeine Extraction from Local Tea Leaves and its Estimation by Iodometric Method." Spectrum: Science and Technology 9, no. 1 (December 15, 2022): 35–41. http://dx.doi.org/10.54290/spect/2022.v9.1.0004.
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The principal constituent of tea, which is responsible for all the properties, is the alkaloid caffeine. Theanine is an amino acid found only in tea leaves, which imparts a pleasantly sweet taste to tea. It is degraded to glutamic acid and has relaxation effects in humans. Caffeine is a bitter, white crystalline xanthine alkaloid and a stimulant drug. It is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyses and kills certain insects feeding on the plants, as well as enhancing the reward memory of pollinators. It is also found in coffee, tea, cola, guarana, mate, and other products. Caffeine - containing products have been consumed for hundreds of years for their pleasant flavour and stimulating effects. Caffeine is one of the most commonly used stimulants among athletes. In this paper we have discuss the extraction of caffeine from our local tea leaves, Namar Jongphi and Nalari Gold tea leaves available in the market. The liquid-liquid extraction method was followed for the extraction of caffeine and the estimation of the amount of caffeine was calculated and estimated by iodometric method.
Dissertations / Theses on the topic "Caffeine containing products"
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Joshi, Paliza. "Use of cognitive enhancing substances by University students: a cross-sectional study." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/361.
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Objectives: The purpose of this study was to determine the prevalence and patterns of use of cognitive enhancing substances (such as caffeine containing products and beverages and prescription stimulant drugs) amongst students at Curtin University. Further, to determine the potential for adverse effects from their use.Method: A cross-sectional study was conducted involving students attending the Curtin University. A sample of students was randomly selected and students were presented with an information sheet explaining the purpose and design of the study as well as their role in the study. Once they gave verbal consent to participate, they were requested to complete a questionnaire. All the completed questionnaires were entered into a dataset on a computer using the SPSS software, and analysis of the data was performed using the SPSS version 17 and SAS statistical software packages for Microsoft Windows. Statistical analysis included descriptive statistics such as frequencies and percentages or means and standard deviations. The cross-tabulation, chi-square statistic and ANOVA were used to assess the statistical significance of difference.The survey included questions regarding demographics, caffeine (consumption, reasons for use, side effects following its consumption) and prescription stimulants (use, reason for use and side effects following consumption). Further, data was collected on the perceived effectiveness of the cognitive enhancing substances by students and their level of caffeine consumption.Results: The final dataset included 526 students out of which 94.5% of surveyed students reported that they drank caffeine containing beverages. Tea and coffee were found to be the most common sources of caffeine followed by soft drinks and energy drinks. The average daily caffeine intake was estimated to be 3.0mg/Kg/day on normal days and 3.8mg/Kg/day on exam days. Females were found to consume slightly more caffeine than males. Also, there was higher caffeine intake by smokers than non-smokers.Regarding energy drinks, a greater percentage of males than females were found to consume energy drinks. The students studying health related courses were less likely than those from other faculties to consume energy drinks. Similarly, there was significant association between the smoking status and energy drinks consumption.The most frequent adverse effects experienced by students were jolt and crash followed by insomnia, and headache following caffeine intake. Moreover, more students experienced side effects following high doses of caffeine as compared to moderate and low doses. The most common self-reported reasons for consuming caffeine containing products were: to boost their energy and while studying for exams or completing major projects, and to counteract lack of sleep.Of all the respondents only 4% (n=21) reported that they used prescription stimulants (other than caffeine). Approximately 3% used stimulants together with caffeine on both normal and exam days. The prevalence of taking prescription stimulants was higher in students consuming higher doses of caffeine. The most common reported reasons for use were to improve concentration and to get high (equal percentage of 66.7% students). Most of the students stated that they experienced insomnia after the prescription stimulants intake. They also reported experiencing jolt and crash. Most of the students perceived that cognitive enhancing substances are effective in improving their energy levels.Conclusion: A substantial proportion of students in this sample were found to consume caffeine containing products. The study demonstrated that cognitive enhancing substance use was increased around times of academic stress. The students taking high doses were at higher risk to side effects. As a greater proportion of students consumed high doses of caffeine during exam period, more were at risk of adverse effects. Only a small percentage of students reported use of other stimulants, but importantly, this was more common amongst high consumers of caffeine. Further studies at other universities are required to confirm the findings of this study.
Books on the topic "Caffeine containing products"
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Gluckman, Sir Peter, Mark Hanson, Chong Yap Seng, and Anne Bardsley. Foods, exposures, and lifestyle risk factors in pregnancy and breastfeeding. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780198722700.003.0030.
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Advice for pregnant women on food avoidance, dangerous exposures, and inappropriate behaviours abounds on the internet and through various information sources. This chapter reviews the evidence base for such advice and clarifies issues where common advice is not supported by credible data. Foods containing potential teratogens, mutagens, or toxicants that need consideration include liver (high vitamin A), some herbal teas, contaminated grains, predatory fish, caffeine-containing foods, and various sources of foodborne infections. Exposure to environmental toxicants such as lead, pesticides, herbicides, polycyclic aromatic hydrocarbons, bisphenol-A, and other endocrine-disrupting chemicals should be avoided, as should alcohol consumption and cigarette smoking. Restrictive diets and unusual dietary cravings (pica) need to be properly managed. Evidence for harm from personal care products is generally weak, but pregnant women may choose to avoid some unnecessary exposures.
Book chapters on the topic "Caffeine containing products"
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Roli, Osahon Itohan, Charles Oluwaseun Adetunji, Pragya Mishra, Juliana Bunmi Adetunji, and Raghvendra Raman Mishra. "Caffeine: Nutraceutical and Health Benefit of Caffeine-Containing Commodities and Products." In Innovations in Food Technology, 425–44. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6121-4_29.
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Nakamoto, Tetsuo, Alexander U. Falster, and William B. Simmons Jr. "The Contrasting Effects between Caffeine and Theobromine on Crystallization: How the Non-fluoride Dentifrice Was Developed." In Oral Health Care [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.101116.
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Caffeine and theobromine are members of the xanthine family. Coffee and soft drinks contain caffeine, whereas, in cacao, theobromine is the main ingredient. The mineral contents of the tooth which sucked the caffeine-containing dam’s milk were decreased. To determine if caffeine would affect enamel, dams were fed with a caffeine and pups were killed and first and second molars were extracted. Enamel was exposed to the acid solution and dissolved minerals from the enamel were measured. Calcium, phosphorus and magnesium from the first molars of the caffeine group were significantly dissolved. To determine why minerals were released, enamel was separated. The crystallite size of the enamel from the caffeine group showed decreased. If the pups with the same dietary regimen, but given a cariogenic diet, the caffeine group should show a higher incidence of dental caries. The caffeine group revealed higher caries scores. An in vitro experiment to grow apatite crystals was conducted, adding the various members of the xanthine. Theobromine produced larger crystal sizes than caffeine. Theobromine was added to the maternal diet. Dissolution experiments revealed that these minerals were far less dissolved. Comparative studies of the various parameters between theobromine and fluoride were conducted. Theobromine was superior to fluoride in every aspect.
Conference papers on the topic "Caffeine containing products"
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Ősz, BE, A. Tero-Vescan, and A. Miklos. "Quantitative control of dietary supplements containing caffeine." In 67th International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA) in cooperation with the French Society of Pharmacognosy AFERP. © Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-3400428.
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Jovanović-Stević, Snežana, Jovana Bogojeski, A. Caković, and B. Petrović. "NUCLEOPHILIC SUBSTITUTION REACTIONS OF THE CAFFEINE- DERIVED PT(II) AND PD(II) COMPLEXES WITH IMPORTANT BIOMOLECULES." In 1st INTERNATIONAL Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac, 2021. http://dx.doi.org/10.46793/iccbi21.383js.
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The application of transition metal complexes as chemotherapeutics has been presented throughout the history. Platinum-based drugs are widely used as anticancer agents with a broad range of antitumor activities. The study of the substitution reactions of metal complexes with nitrogen containing biomolecules can help to develop new antitumor drugs with improved characteristics. Kinetics of the substitution reactions of [Pt(caffeine)2Cl2] and [Pd(caffeine)2Cl2] (caffeine = 1,3,7-trimethylxanthine) complexes with biologically important ligands such as 9-methylguanine (9-MetGua) and guanosine-5’-monophosphate (5’-GMP) were studied by UV-Vis spectrophotometry and by stopped-flow technique. Kinetics measurements were performed under the pseudo-first order conditions at 37 °C and pH = 7.2 (25 mM Hepes buffer) in addition of 50 mM NaCl. The obtained results showed that all substitution reactions undergo the two reaction steps giving the [M(caffeine)2(Nu)2] (M = Pd(II) or Pt(II) and Nu = 5′-GMP or 9-MetGua) as the reaction product. Additionally, [Pd(caffeine)2Cl2] complex was more reactive compared to analogue platinum-complex, while 9-MetGua reacted faster than 5’-GMP.
Reports on the topic "Caffeine containing products"
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Bostock, Richard M., Dov Prusky, and Martin Dickman. Redox Climate in Quiescence and Pathogenicity of Postharvest Fungal Pathogens. United States Department of Agriculture, May 2003. http://dx.doi.org/10.32747/2003.7586466.bard.
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Monilinia fructicola causes brown rot blossom blight and fruit rot in stone fruits. Immature fruit are highly resistant to brown rot but can become infected. These infections typically remain superficial and quiescent until they become active upon maturation of the fruit. High levels of chlorogenic acid (CGA) and related compounds occur in the peel of immature fruit but these levels decline during ripening. CGA inhibits cutinase expression, a putative virulence factor, with little or no effect on spore germination or hyphal growth. To better understand the regulation of cutinase expression by fruit phenolics, we examined the effect of CGA, caffeic acid (CA) and related compounds on the redox potential of the growth medium and intracellular glutathione (GSH) levels. The presence of CA in the medium initially lowered the electrochemical redox potential of the medium, increased GSH levels and inhibited cutinase expression. Conidia germinated in the presence of CA, CGA, or GSH produced fewer appressoria and had elongated germ tubes compared to the controls. These results suggest that host redox compounds can regulate fungal infectivity. In order to genetically manipulate this fungus, a transformation system using Agrobacterium was developed. The binary transformation vector, pPTGFPH, was constructed from the plasmid pCT74, carrying green fluorescent protein (GFP) driven by the ToxA promoter of Pyrenophora tritici-repentis and hygromycin B phosphotransferase (hph) under control of the trpC promoter of from Aspergillus nidulans, and the binary vector pCB403.2, carrying neomycin phosphotransferase (nptII) between the T-DNA borders. Macroconidia of M. fructicola were coincubated with A. tumefaciens strain LBA 4404(pPTGFPH) on media containing acetosyringone for two days. Hygromycin- and G418-resistant M. fructicola transformants were selected while inhibiting A. tumefaciens with cefotaxime. Transformants expressing GFP fluoresced brightly, and were formed with high efficiency and frequency of T-DNA integration frequency. The use of these transformants for in situ studies on stone fruit tissues is discussed.