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Effects of oral supplementation of mint extract on muscle pain and blood lactate

Study aim: To determine the effects of mint extract on muscle pain and blood lactate levels after a 400-m run.

Material and methods: A group of 16 physical education students (mean age 21.81 ± 2.13 years) volunteered to participate in the study. The subjects were randomly assigned into 3 groups: mint, placebo or control. The mint group was given orally mint extract (5 ml/kg of body mass) and the placebo group was given unsweetened tea (5 ml/kg) in a double-blind fashion and cross-over design one hour before a 400-m running test. Subjects in the control group remained untreated. The effect of mint extract on muscle pain was recorded by an inquiry; blood lactate levels were measured after the running test.

Results: Oral administration of mint extract significantly (p<0.01) decreased blood lactate concentrations but muscle pain levels remained unchanged in all groups.

Conclusions: Oral administration of mint extract may have a beneficial effect on blood lactate clearance and therefore may increase athletic performance.

164 L A N G R – R I C H T E R A , U h e r s k é d v a c e t i k r e j c a r y , s . 1 6 4 – 1 6 8 The Hungarian 20-kreuzer pieces struck under the Austrian Emperor Franz I Starting with 1830, the mint in Vienna began to strike the Hungarian 20-kreu- zer pieces. Later on, the mint in Kremnica continued with their production. The recent specialized literature does not discuss the beginning of the striking process in detail, and all existing minting years and varieties are not listed there. This article is focused on mapping all these coins and revision of

, International Journal of Advanced Research . 2013 , 1(8), 75-84. [14]. Chawla, S.; Thakur, M., Overview of Mint ( Mentha L.) as a promising health-promoting herb. International Journal of Pharmaceutical Rasearch and Development . 2013 , 5(06), 073-080. [15]. Rasooli I.; Mirmostafa, S. A., Antibacterial properties of Thymus pubescens and Thymus serpyllum essential oils, Fitoterapia . 2002 , 73(3), 244-50. [16]. Mimica-Dukic, N.; Bozin, B.; Sokovic, M.; Simin, N., Antimicrobial and antioxidant activities of Melissa officinalis L. (Lamiaceae) essential oil, J

. M., Deangelis, J. D., Rossignol, P. A. 1991: First report of Tomato spotted wilt virus in peppermint ( Mentha piperita ). Plant Disease 75, 644. Tzanetakis, I. E., Postman, J. D., Martin, R. R., 2004: Identification, detection and phylogenetic analysis of new viruses infecting mint. Phytopathology 94, 104. Tzanetakis, I. E., Postman, J. D., Samad, A., Martin, R. R., 2010: Mint viruses: Beauty, stealth, and disease. Plant Disease 94, 4-12. Unlu, S., Guldur, M. E., 2004: Determination of infection ratio of Cucumber mosaic virus (CMV) on pepper in Sanliurfa. Journal

67 7 2 • 2 0 1 7 n 1 – 2 Interesting and unknown coins struck under Ferdinand II in the Prague mint Three unknown varieties of the Prague kipper coins by B. Hübmer produced in the Prague mint are described in this article. The coins differ from the recently documented types in the following small details: mint-master’s mark in brackets, form of year or differences in eagle’s image. Information about these issues has been enriched, and it can help in creation of the ‘complete survey’ of the Bohe- mian kipper coins. Basic notes for collectors about rarity of


The formulations of washing cosmetics i.e. shower gels, containing extracts obtained during supercritical CO2 extraction process as active ingredient, were developed. The subject of the study was the analysis of the physicochemical and user properties of the obtained products. In the work supercritical CO2 extracts of black currant seeds, strawberry seeds, hop cones and mint leafs were used. The formulation contains a mixture of surfactants (disodium cocoamphodiacetate, disodium laureth sulfosuccinate, cocoamide DEA, cocoamidepropyl betaine, Sodium Laureth Sulfate). Various thickener agents were applied to the obtained desired rheological properties of the cosmetics. Among others, sorbitol acetal derivatives, methylhydroxypropylcellulose and C10-30 alkyl acrylate crosspolymer were used. For stable products, the effect of extracts addition (black currants seeds, strawberries seeds, mint and hops, obtained from supercritical CO2 extraction process) on the cosmetics properties, such as pH, viscosity, detergency and foam ability, were determined. The obtained results showed that the extracts could be used as components of shower gels.

D., C astillo S., S errano M., V alero D., 2007. Improvement of the overall quality of table grapes stored under modified atmosphere packaging in combination with natural antimicrobial compounds. J. Food Sci. 72, 185-190. H ajlaoui H., T rabelsi N., N oumi E., S noussi M., F allah H., K souri R., et al ., 2009. Biological activities of the essential oils and methanol extract of tow cultivated mint species ( Mentha longifolia and Mentha pulegium ) used in the Tunisian folkloric medicine. World J. Microb. Biot. 25, 2227-2238. H amdani F. Z., A llem R

48 O n d ře j Č E R N O H O R S K Ý, P ř í s p ě v e k k m i n c o v n í č i n n o s t i , s . 4 8 – 5 3 Contribution to the minting activities in Kuttenberg in 1419–1421 Two Prague grossi of Wenceslas IV of Luxembourg were found near the Libštejn Castle. The first of these grossi has never been published and it is analysed here in detail. Because of differences in its image and marginal legend, it is newly classified under the recent typological and chronological categories. Both coins were lost very likely in context of the historical events of the


The author discusses a phenomenon of putting the works of military cartography on medals cast in the 17th century. The analysis focused on a medal presented to Krzysztof Arciszewski (1592-1656) by the Dutch West India Company in 1637. The obverse of this medal features two cartographic images depicting the siege of the Arraial Velho do Bom Jesus fortress (1635) and the battle between Camarigibi and Porto Calvo (1636). They were patterned after two manuscript maps. The maps were made by Arciszewski and attached to a memorandum written and sent to the management of the West India Company on 13 June 1633. They were engraved and published in print only around 1644. The plan of the battle that took place on 18 January 1636 indicates that the engraver (author unknown) used not only the manuscript version but also the medal. The example of the medal minted in 1637 confirms the credibility of cartographic representations featured on numismatic items. It should, naturally, be borne in mind that such representations must have been simplified due to the very nature of the means. Nevertheless, should there be no proper manuscript pattern, such objects may be used successfully as valuable cartographic sources.


Social networking services (SNSs) can significantly impact public life during important political events. Thus, it comes as no surprise that different political actors try to exploit these online platforms for their benefit. Bots constitute a popular tool on SNSs that appears to be able to shape public opinion and disrupt political processes. However, the role of bots during political events in a non-Western context remains largely under-studied. This article addresses the question of the involvement of Twitter bots during electoral campaigns in Japan. In our study, we collected Twitter data over a fourteen-day period in October 2017 using a set of hashtags related to the 2017 Japanese general election. Our dataset includes 905,215 tweets, 665,400 of which were unique tweets. Using a supervised machine learning approach, we first built a custom ensemble classification model for bot detection based on user profile features, with an area under curve (AUC) for the test set of 0.998. Second, in applying our model, we estimate that the impact of Twitter bots in Japan was minor overall. In comparison with similar studies conducted during elections in the US and the UK, the deployment of Twitter bots involved in the 2017 Japanese general election seems to be significantly lower. Finally, given our results on the level of bots on Twitter during the 2017 Japanese general election, we provide various possible explanations for their underuse within a broader socio-political context.