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10 záznamů v Medvik Filtry

Článek online

The Effect of High Nicotine Dose on Maximum Anaerobic Performance and Perceived Pain in Healthy Non-Smoking Athletes: Crossover Pilot Study

Bartík, Peter
Autor Bartík, Peter ORCID Health and Physical Education Department, Prince Sultan University, Riyadh 11586, Saudi Arabia
Šagát, Peter
Autor Šagát, Peter Health and Physical Education Department, Prince Sultan University, Riyadh 11586, Saudi Arabia
Pyšná, Jana
Autor Pyšná, Jana Department of Physical Education and Sport, Faculty of Education, J. E. Purkyne University in Ústí nad Labem, 400 96 Ústí nad Labem, Czech Republic
Pyšný, Ladislav
Autor Pyšný, Ladislav Department of Physical Education and Sport, Faculty of Education, J. E. Purkyne University in Ústí nad Labem, 400 96 Ústí nad Labem, Czech Republic
Suchý, Jiří
Autor Suchý, Jiří ORCID Department of Physical Education, Faculty of Education, Charles University, 116 39 Prague, Czech Republic
Trubák, Zdeněk
Autor Trubák, Zdeněk Department of Physical Education and Sport, Faculty of Education, J. E. Purkyne University in Ústí nad Labem, 400 96 Ústí nad Labem, Czech Republic
Petrů, Dominika
Autor Petrů, Dominika Department of Physical Education and Sport, Faculty of Education, J. E. Purkyne University in Ústí nad Labem, 400 96 Ústí nad Labem, Czech Republic

International journal of environmental research and public health. 2023 ; 20 (2) : . [pub] 20230105

Int. j. environ. res. public health
ISSN 1660-4601
Medvik
Zdroj

Background: In recent years, there has been intensive discussion about the positive effect of nicotine usage on enhancing sports performance. It is frequently applied through a non-burned tobacco form before physical activity. Nicotine is under the World Anti-Doping Agency (WADA) 2021 monitoring program. Therefore, study results that reveal either positive or negative effects are expected. This is the pilot study that reports the effect of 8 mg dose of nicotine on performance and perceived pain. Material and Methods: This research aimed to explore the oral intake effect of a high-nicotine dose (8 mg) on the maximum anaerobic performance and other selected physical performance parameters in healthy, well-trained adult athletes (n = 15, age 30.7 ± 3.6, BMI 25.3 ± 1.7). The cross-sectional study protocol included the oral administration of either sublingual nicotine or placebo tablets before the anaerobic load assessed by a standardized 30 s Wingate test of the lower limbs. Afterward, the Borg subjective perception of pain (CR 10) and Borg rating of perceived exertion (RPE) were evaluated. Wilcoxon signed-rank test was used for the analysis of data with a 0.05 level of significance. Results: The results revealed that oral administration of an 8 mg nicotine dose does not significantly improve any of the physical performance parameters monitored. We only reported the statistically significant positive effect in RPE (p = 0.03). Conclusion: Lower perception of pain intensity that we reported after nicotine application might be an important factor that affects performance. However, we did not report any improvement in physical performance parameters.

Článek online

Physical Activity and BMI before and after the Situation Caused by COVID-19 in Upper Primary School Pupils in the Czech Republic

International journal of environmental research and public health. 2022 ; 19 (5) : . [pub] 20220305

Int. j. environ. res. public health
ISSN 1660-4601
Medvik
Zdroj

Regular physical activity is a very important factor in the healthy development of an individual and an essential part of a healthy lifestyle. However, today's population still suffers from an insufficient amount of exercise caused mainly by technological progress and often inappropriate conditions for practising sports. In relation to this, we are grappling with a steady increase in obesity. During the COVID-19 pandemic, conditions for regular physical activity became even more unfavourable, with the declaration of a state of emergency and antipandemic measures leading to the closure of sports grounds and sporting competitions. Using a questionnaire survey of a sample of children (n = 1456), we found that, already before the pandemic, 69% of the observed sample had not met the recommended amount of physical activity, and only 67% of the sample was of normal weight. By comparing both groups after the end of pandemic restrictions, we found statistically significant differences at examined indicators of the children's Body Mass Index (BMI), their physical activity, and free time spending habits. We noticed the significant differences in BMI indicators in two different categories, normal weight (7.5%) and stage 1 obesity (1.66%). Simultaneously, we noticed differences in the children's physical activities, especially with children who attend sports playgroups connected to athletic development (8.74%). More differences were noticed in free time spending habits indicators; the most significant ones were with the children who spend their free time behind the personal computer for more than 14 h a week (5.4%) and with the children who spend their free time on social media for 8-14 h a week (18.56%).

Článek online

Kouření tabáku, konzumace alkoholu a užívání marihuany u studentů středních škol Ústeckého kraje
[Tobacco smoking, alcohol consumption and marijuana abuse in secondary school pupils in the Ústí Region]

Hygiena (Státní zdravotní ústav, Print). 2018 ; 63 (1) : 5-9.

Hygiena (Státní zdr. úst. Print)
ISSN 1802-6281
Medvik
Zdroj

Příspěvek hodnotí kouření tabáku, konzumaci alkoholu a užívání marihuany u studentů "standardních středních škol" Ústeckého kraje. Ústecký kraj je specifický řadou faktorů, které mohly podporovat zvýšené rozšíření příjmu těchto drog a výsledky některých studií přinášejí pouze celorepublikové údaje. Pro sběr dat byly využity otázky Evropského modelového dotazníku (EMQ), zaměřené na tuto problematiku. Výzkum byl realizován na 43 školách, kde bylo vyhodnoceno 3 558 dotazníků, 1 809 od chlapců a 1 749 od dívek. Naše výsledky popisují vysoký příjem vybraných drog u středoškolských chlapců a dívek z Ústeckého kraje a odlišnost od některých, podobně zaměřených výzkumů, sledujících data z celé České republiky. Při hodnocení kouření tabáku téměř 42 % dotázaných v současnosti kouří (více dívek než chlapců) a poměrně značná část konzumuje alkohol. V posledních 12 měsících udalo pití alkoholu 87 %, v posledních 30 dnech 73 % studentů. Užití konopných látek přiznalo v posledních 12 měsících 30 % studentů a v posledních 30 dnech 15 % studentů. U všech hodnocených odpovědí jsme zjistili statisticky významné rozdíly mezi chlapci a děvčaty. Tabák kouřilo více dívek, konzumaci alkoholu a užití marihuany udalo více chlapců. Naše výsledky jsme se pokusili, u některých věkových kategorií, porovnat s celostátními studiemi, kdy jsme nalezli větší rozšíření kouření tabáku.

Assessed is tobacco smoking, alcohol consumption and marijuana abuse by students of "standard secondary schools" of the Ústí Region. The Ústí Region is specific in a range of factors which could support increased intake of these drugs, and results of some studies bring only data covering the whole republic. For data collection were used questions from the European Model Questionnaire (EMQ), focused on this issue. The survey was carried out at 43 secondary schools, where in there have been evaluated 3,558 questionnaires, 1,809 from boys and 1,749 from girls. Our results describe the high intake of selected drugs in high school boys and girls difference in the Ústí Region and the from other, similarly focused researches, following data from the whole Czech Republic. In the evaluation of tobacco smoking, almost 42% of there enquired do smoke at present (more girls than boys) and relatively a considerable proportion of them drink alcohol, 87% indicated the consuming of alcohol in the last 12 months and 73% in the last the 30 days. Usage of cannabis substances admitted 30% of students in the last 12 months and 15% of students in the last 30 days. Statistically significant differences between boys and girls were found in all the responses evaluated. Tobacco smoking prevailed among girls, whereas boys indulged more in alcohol and marijuana abuse. The present results in certain age groups have been compared with nation-wide studies, indicating a greater prevalence of tobacco smoking.