Metabolic and exercise endurance effects of coffee and caffeine ingestion

1998 ◽  
Vol 85 (3) ◽  
pp. 883-889 ◽  
Author(s):  
T. E. Graham ◽  
E. Hibbert ◽  
P. Sathasivam

Caffeine (Caf) ingestion increases plasma epinephrine (Epi) and exercise endurance; these results are frequently transferred to coffee (Cof) consumption. We examined the impact of ingestion of the same dose of Caf in Cof or in water. Nine healthy, fit, young adults performed five trials after ingesting (double blind) either a capsule (Caf or placebo) with water or Cof (decaffeinated Cof, decaffeinated with Caf added, or regular Cof). In all three Caf trials, the Caf dose was 4.45 mg/kg body wt and the volume of liquid was 7.15 ml/kg. After 1 h of rest, the subject ran at 85% of maximal O2consumption until voluntary exhaustion (∼32 min in the placebo and decaffeinated Cof tests). In the three Caf trials, the plasma Caf and paraxanthine concentrations were very similar. After 1 h of rest, the plasma Epi was increased ( P < 0.05) by Caf ingestion, but the increase was greater ( P < 0.05) with Caf capsules than with Cof. During the exercise there were no differences in Epi among the three Caf trials, and the Epi values were all greater ( P < 0.05) than in the other tests. Endurance was only increased ( P < 0.05) in the Caf capsule trial; there were no differences among the other four tests. One cannot extrapolate the effects of Caf to Cof; there must be a component(s) of Cof that moderates the actions of Caf.

2018 ◽  
Vol 19 (4) ◽  
pp. 1008-1016 ◽  
Author(s):  
J. Caprario ◽  
A. S. Rech ◽  
A. R. Finotti

Abstract The decline in groundwater availability and quality has become a worldwide issue and has been the subject of several studies in recent decades. In this sense, the goal of this study is to assess the vulnerability of the Campeche Aquifer (Florianopolis, Brazil), identifying potential areas of possible contamination by the direct infiltration of runoff in drainage compensatory techniques. To achieve this goal, the following methodological steps were used: (1) data collection and preparation, (2) application of the DRASTIC model, (3) sensitivity analysis and (4) analysis of potential contamination by compensatory techniques. The results show that approximately 33% of the aquifer area presented moderate vulnerability to contamination. However, 29% of the remaining areas had high and extremely high vulnerability. Analysing the potential of contamination with drainage compensatory structures we verified that approximately 95% of them are located in areas of vulnerability classified as moderate and high. The other 5% were identified in areas with extremely high vulnerability. Sensitivity analyses indicated that the removal of topography, soil type and the impact of the vadose zone caused a large variation in vulnerability index. It is evident that there is a high potential of contamination of groundwater by direct infiltration of drainage compensatory structures.


2019 ◽  
Vol 11 (1) ◽  
pp. 23-28
Author(s):  
Suparno Suparno ◽  
N. Praptiningrum ◽  
Ernisa Purwandari

Pendidikan inklusi sebagai sebuah pendekatan untuk memenuhi kebutuhan pendidikan belajar semua anak, menjadi solusi bagi peserta didik berkebutuhan khusus untuk mendapatkan layanan pendidikan setara dengan peserta didik pada umumnya termasuk siswa berkebutuhan khusus lamban belajar (slow learner). Daerah Istimewa Yogyakarta (DIY) sebagai salah satu provinsi penyelenggara pendidikan inklusi telah menerapkan pendidikan inklusi di semua kabupaten dan kota. Kajian ini penting untuk memperbaiki praktik pendidikan inklusi di DIY selanjutnya. Subjek dalam penelitian ini adalah siswa lamban belajar (slow learner) tingkat dasar (dasar 1-3) di tujuh SD Inklusi di Bantul. Hasil penelitian menunjukkan bahwa 1) implementasi pendidikan inklusi memberikan dampak positif terhadap capaian akademik membaca dan aritmatika siswa lamban belajar; 2) implementasi pendidikan inklusi belum menunjukkan dampak yang positif terhadap capaian akademik menulis siswa lamban belajar. Penelitian masih terbatas pada siswa lamban belajar sehingga perlu pengkajian lebih lanjut akan dampak pendidikan inklusi pada siswa berkebutuhan khusus lainnya. Inclusive education as an approachment to meet the needs of learning all children be a solution for students with special needs to get the services of education equivalent to students in general included in it students slow learner. Daerah Istimewa Yogyakarta (DIY) as one of the provinces of the organizers inclusive education in all of the regency and the city. This study is an important to improve the practice of inclusive education in DIY next time. The subject in this research are students with slow learner the basic (basic 1- 3) in seventh inclusive elementary school in Bantul. The results of the research indicate that 1) implementation inclusive education give a positive impact on their academic reading and arithmetical students with slow learner; 2) implementation inclusive education has not shown a positive impact on their academic wrote students with slow learner. The research is still limited on the students with slow learner so that need to more assessment will be the impact of inclusive education on the other students with special needs.


2021 ◽  
Author(s):  
◽  
Mu-En Chen

<p>Cosmopolitan consumers generally refer to individuals who are open and unbiased towards foreign products and identify as citizens of the world. Despite growing relevance of understanding consumer cosmopolitanism (COS) in today’s changing international landscape, both the construct itself is still not that well understood and operationalized, as well as its social and psychographic antecedent. In terms of culture studies, recent culture studies within the IB discipline continue to debate over the appropriate definitions of culture, as well as its conceptualization, operationalization, and especially measurement. This research aims to explore the impact of personal cultural orientations (PCOs), as individual-level culture value concepts, on COS, as well as the potential moderating role of product involvement (e.g., high- vs low-involvement products). Young-adult consumers in Taiwan and New Zealand were chosen to provide a contrast between a typical Western, Anglo-Saxon-based perspective and a typical Eastern, Asian, Confucian-based cultural context.  Overall, this study could not fully support PCOs as having a significant impact on COS, nor product involvement as a moderator. However, COS could not be tested as a second-order reflective latent construct as originally intended in the seminal paper by Riefler et al. (2012). Compared to Riefler et al. (2012)’s paper, differences can be observed in the sampling where Riefler et al. (2012) sampled respondents aged 19 to 93 years (mean=46.6). This suggests that young adults a generational cohort hold significantly different perspectives and dispositions to other generations and the overall population. This finding aligns with recent IB literature in looking for smaller ‘containers’ of culture.  Of the three PCOs tested, two displayed significant effects to COS in both country samples, but only to one dimension of the COS construct (Open-mindedness) and not the other (Diversity appreciation). Hence it is highly likely the PCOs tested in this study have significant effects on COS, if only COS could be operationalized as originally intended as discussed above. This points towards potential issues in appropriateness of the scales used for studies on young adults, as both the PCO and COS scales were developed on a wide range (age diverse) of respondents.  This study also showed that within-country differences appear to be smaller than across-country differences. This is not consistent with previous cross-cultural research in the IB literature, which suggest cultural values differ significantly at the individual level due to differences in individuals’ experiences. Again, such research was done on more diverse respondent populations, not a specific demographic cohort with distinct social experiences. This finding has implications for the general assumption that within-country differences are considerably larger than across-country differences, when it comes to cultural value studies. Thus, when focusing on a specific demographic generational cohort, it seems that even when it comes to representatives from two very diverse cultural backgrounds, one grounded in a more Western and Protestant-based cultural context with more independent identity construal and the other in a more Eastern and Confucian-based cultural context with more interdependent identity construal, my evidence shows grater tendency towards a generational archetype understanding of young adults.</p>


2022 ◽  
Vol 17 (1) ◽  
pp. 16-22
Author(s):  
Daria Bilenko ◽  
◽  
Serhii Kozlovskyi ◽  
Natalya Ivanyuta ◽  
Viktoriia Baidala ◽  
...  

Ongoing global COVID-19 pandemic is not only health crisis but the economic challenge. The future of society depends on how successfully the authorities find a balance between imposition of stringent restrictions and economic development. Tax policies play a role in reducing losses caused by the COVID-19 lockdowns. All countries are taking tax measures to mitigate the impact of the effects of COVID-19 pandemic on society. While the COVID-19 pandemic has not yet been defeated, it is too early to draw conclusions about which tax measures against the effects of COVID-19 are efficient. On the other hand, correct trajectory of economic recovery can be missed if not to analyze the other countries experience. The object of this study is tax measures in the European countries against the effects of COVID-19. The subject of the study is the fuzzy set theory to assess the efficiency of tax measures in the European countries against the effects of COVID-19. The aim of the study is to find out which European countries have been more succeeded in tax measures implementing and type of their immediate crisis response. The analysis is carried out in 29 European countries. The result of the study allows to state that the number of tax measures against the effects of COVID-19 does not affect their efficiency and the most popular type of immediate crisis response has been the business cash-flow enhances.


2018 ◽  
Vol 63 (216) ◽  
pp. 85-109 ◽  
Author(s):  
Sinisa Radic

The subject of the research in this paper is the impact of intellectual capital efficiency on the profitability of commercial banks in the Republic of Serbia. The efficiency of commercial banks? intellectual capital was measured by the created value added in the observed period, using the Value Added Intellectual Coefficient methodology (VAIC). Empirical analysis was carried out using econometric analysis of panel data for 27 banks that were operating in the banking sector of the Republic of Serbia in the period 2008-2016. The results of the analysis show that the significance of the impact of the efficient use of intellectual capital on the profitability of banks operating in Serbia depends on the selected profitability measure. When ROA is chosen as an indicator of profitability the bank?s level of indebtedness determines the sign of this influence, so at higher levels of indebtedness efficient use of intellectual capital negatively affects the profitability of the bank. On the other hand, in this case the size of the bank does not significantly affect the dependence of the bank?s profitability on the efficient use of its intellectual capital. If ROE is a measure of the profitability of banks the efficient use of intellectual capital has no significant impact on banks? profitability.


2018 ◽  
Author(s):  
Xiaole Ma ◽  
Weihua Zhao ◽  
Ruixue Luo ◽  
Feng Zhou ◽  
Yayuan Geng ◽  
...  

AbstractWe interact socially and form bonds with others because such experiences are rewarding. However, an insecure attachment style or social anxiety can reduce these rewarding effects. The neuropeptide oxytocin (OXT) may facilitate social interactions either by increasing their rewarding experience or by attenuating anxiety, although effects can be sex- and attachment-style dependent. In this study, 64 pairs of same-sex friends completed a social sharing paradigm in a double-blind, placebo-controlled, between-subject design with one friend inside an MRI scanner and the other in a remote behavioral testing room. In this way we could examine whether intranasal-OXT differentially modulated the emotional impact of social sharing and associated neural processing. Additionally, we investigated if OXT effects were modulated by sex and attachment style. Results showed that in women, but not men, OXT increased ratings for sharing stimuli with their friend but not with a stranger, particularly in the friend in the scanner. Corresponding neuroimaging results showed that OXT decreased both amygdala and insula activity as well as their functional connectivity in women when they shared with friends but had the opposite effect in men. On the other hand, OXT did not enhance responses in brain reward circuitry. In the PLC treated group amygdala responses in women when they shared pictures with their friend were positively associated with attachment anxiety and OXT uncoupled this. Our findings demonstrate that OXT facilitates the impact of sharing positive experiences with others in women, but not men, and that this is associated with differential effects on the amygdala and insula and their functional connections. Furthermore, OXT particularly reduced increased amygdala responses during sharing in individuals with higher attachment anxiety. Thus, OXT effects in this context may be due more to reduced anxiety when sharing with a friend than to enhanced social reward.


1994 ◽  
Vol 4 (5) ◽  
pp. 333-336 ◽  
Author(s):  
K. SjÖVall ◽  
B. Nilsson ◽  
N. Einhorn

The significance of tumor spill in the early stages of ovarian carcinoma has been the subject of controversy. Since rupture of the capsule of the tumor may occur in several different ways, we analyzed all cases of early ovarian cancer treated at Radiumhemmet, Stockholm, Sweden, during the period 1974–1986, in which possible spill of tumor cells was catalogued in different groups. In 247 out of 394 patients (62%) the risk of spill had to be considered. There was no difference in survival between patients whose tumors had intact capsules and patients in whom rupture occurred during surgery—78% and 85%, respectively. On the other hand, a significant difference in survival was found between patients in whom rupture occurred before surgery and those with intraoperative rupture—59% and 85%, respectively. The conclusion can be drawn that manipulation during surgery which results in puncture or rupture does not have a negative influence on the outcome for the patients.


2011 ◽  
Vol 19 (4) ◽  
pp. 509-525 ◽  
Author(s):  
Paul Dietschy

This article argues that the question of national perspectives is a fundamental problem in the writing of European sports history. It does so by demonstrating that France has an equal pedigree, in terms of diffusion and exceptionalism, as Britain, and pleads for a less skewed approach to the history of the subject in general. The article shows, first, that France contributed significantly to the internationalization of sport in the nineteenth and early twentieth centuries, with French networks facilitating the spread of sports across the globe. It considers the impact of French universalism on the institutional structures of world sport and assesses the importance of sport to governmental diplomacy. Second, it proposes that France occupies a special place in the history of European sport, halfway between that of the British on the one hand and other continental sporting cultures on the other. It discusses the role of central and regional administrations in the creation of a sports space that is distinctly marked by a lack of football hegemony. French sport, the article concludes, is characterized by a peculiar mix of anglomanie, invented traditions, internationalism, state interventionism and eclecticism.


2009 ◽  
Vol 49 (1) ◽  
pp. 49-97 ◽  
Author(s):  
Basheer M. Nafi

AbstractIn 1298/1881, the Iraqi scholar Nu'mān al-Alūsī published his Jalā' al-'aynayn fī muhākamat al-Ahmadayn, one of the most astute tracts to be written in defense of the fourteenth-century Hanbalī scholar, Ibn Taymiyya. This article attempts to read into the significance of Jalā' al-'aynayn by studying the life and educational environment of its author, the subject matter of the book, the format in which it appeared, and the circumstances of its publishing. There is little doubt that Jalā' al-'aynayn is a founding text in the emergence of modern Salafiyya in major Arab urban centers. Considering the contribution of the Wahhābī movement to the revival of Salafī Islam, one of the aims of this article is to look into the variant expressions of modern Salafiyya. An important aspect of the impact of Nu'mān al-Alūsī's work is related to the way he treated his subject matter, reconstituting the legacy of Ibn Taymiyya in the Muslims' imagination of their traditions. The other, was the publishing of Jalā' al-'aynayn in print. In the following decades, the ecology of Islamic culture would be transformed at a dramatic pace. But two things would not lose their value for the Salafī circles of modern Islam, the referential position of Ibn Taymiyya and the power of the printing-press.


2021 ◽  
Vol 5 (Supplement_2) ◽  
pp. 895-895
Author(s):  
Lynne Bell ◽  
Georgina Dodd ◽  
Adrian Whyte ◽  
Barbara Shukitt-Hale ◽  
Claire Williams

Abstract Objectives A healthy diet is essential for optimal brain health. A number of food bioactives have been linked to cognitive benefits, including phytonutrients and essential fatty acids. Here we investigated the benefits of a walnut-rich breakfast, which contained flavonoids and omega-3s, to see whether consumption of these bioactives might lead to significant cognitive improvements throughout the day. Methods A double-blind, crossover intervention study compared the effects of a breakfast containing 50g walnuts, with a nut-free, macronutrient-matched control. Participants were 32 healthy, young adults aged 18 to 30. Cognition, mood, blood, and EEG measures were recorded at baseline and 2, 4, and 6 hours postprandially. Only the cognitive data are reported here. All cognitive data were analyzed using linear mixed modeling (LMM) with baseline performance included as a covariate. Bonferroni corrected pairwise comparisons were used to investigate significant treatment effects. Results Compared to the control breakfast, the walnuts elicited significantly faster reaction times throughout the day on tasks measuring inhibition and task switching aspects of executive function. Memory recall results were mixed; slightly worse performance was observed at 2 hours following the walnut breakfast, but this was later reversed with walnuts outperforming control at 6 hours. Conclusions The findings provide evidence for reaction time benefits following a walnut-rich breakfast, with effects lasting throughout the day. The results concur with previous literature that suggests executive function effects are commonly observed in young adults following flavonoid supplementation. The memory recall effect at the final time point is consistent with previously observed benefits for both omega-3 fatty acids and flavonoids and may indicate that walnuts offer neuroprotection following long periods of cognitive demand, or that memory benefits depend upon the slower absorption of omega-3s or the delayed appearance of flavonoid metabolites. Walnuts are therefore beneficial to cognitive function in young adults after only a single, acute intake, but further investigation of precise mechanisms is needed. Funding Sources The study was funded by the California Walnut Commission, USA and pre-registered at clinicaltrials.gov.


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