Percorrer por autor "Vieira, Daniela"
A mostrar 1 - 4 de 4
Resultados por página
Opções de ordenação
- Apresentação de caso nº 3: citologia ginecológicaPublication . Luís, Alexandre; Vieira, Daniela; Tavares, Vanessa; Roque, Rúben; André, Saudade; Mendonça, PaulaMulher de 74 anos; antecente de pólipo benihno uterino excisado aos 55 anos; história de utilização de ACO e DIU; G5P2; perdas hemáticas e presença de lesão uterina cujo diagnóstico foi carcinoma pouco diferenciado de alto grau.
- Impact of high-performance sport on serum potassium values in athletes: a systematic reviewPublication . Tavares, Ana Sofia; Bellém, Fernando; Vieira, Daniela; Miranda, Vasco; Pires, MarianaPotassium (K+) is a critical alkali metal and the most abundant cation in the body, primarily found inside cells. It's measurable in serum, plasma, whole blood, and urine. During intense exercise, potassium is released from muscles into the bloodstream, with levels related to exercise intensity. Potassium is essential for cell polarization and transmitting electrical impulses in the heart, so fluctuations in serum potassium (hypokalemia or hyperkalemia) can lead to life-threatening arrhythmias and myocardial issues in athletes. Hypokalemia, or low potassium, can cause muscle issues and, in severe cases, cardiorespiratory arrest due to losses through urine, sweat, or the gastrointestinal tract. Hyperkalemia, or high potassium, may result from excessive intake or kidney problems, causing muscle cramps and reduced excitability, affecting athletic performance. Athletes balance fatigue and recovery, with potassium fluctuations being crucial to their limits. The line between beneficial and harmful effects is fine, and maintaining a diet rich in potassium-regulating foods is vital to prevent imbalances. Understanding potassium's role in intense physical activity helps optimize performance and avoid health risks. The main goal of this systematic review is to compare the blood potassium levels obtained before and after training in athletes.
- Impact of high-performance sport on serum potassium values in athletes: a systematic reviewPublication . Tavares, Ana Sofia; Vieira, Daniela; Pires, Mariana Midões; Miranda, Vasco; Bellém, FernandoBackground: Potassium is an alkali metal and the most abundant cation in the body, which can be measured in serum, plasma, whole blood, and urine without preservatives. The release of potassium from the muscles into the bloodstream during intense exercise is related to the intensity of physical activity. Therefore, changes in the serum levels of potassium measured in the blood of individuals who practice sports regularly can have consequences for the performance and health of athletes. Aims: The present systematic review aims to analyze studies that investigate the impact of training on serum potassium levels in athletes. Method: The PRISMA guidelines were followed and 12 articles were included using electronic databases such as PubMed, Scopus, and Web of Science, and the search was carried out between April 21 and June 15, 2022. Primary research articles written in Portuguese, English, and Spanish have included the study population as athletes who did not take potassium supplements. Results: According to the results obtained, 7 of the 12 articles demonstrate an increase in potassium levels during exercise and a decrease after exercise. Thus, no definitive conclusion can be taken, and it is necessary to deepen this theme more individually to later make a better association between sports. Conclusion: Future studies should be conducted to understand the effect of changes in potassium levels in the heart muscle due to the spurious correlation between potassium and cardiac arrest.
- Impact of high-performance sport on serum potassium values in athletes: a systematic reviewPublication . Tavares, Ana Sofia; Bellém, Fernando; Vieira, Daniela; Miranda, Vasco; Pires, Mariana; Sá, César; Saraiva, Linda; Silva, Inês P.; Silva, Ana; Montoya-Fernández, Carlos; Pereira, BeatrizPotassium is an alkali metal and the most abundant cation in the human body, measurable in serum, plasma, whole blood, and urine. The release of potassium from muscles into the bloodstream during intense exercise is related to the intensity of physical activity. Therefore, changes in serum potassium levels in individuals who regularly engage in sports can have significant consequences for the performance and health of athletes. Aims: To assess the impact of training on serum potassium levels in athletes by means of a broad systematic review. Following the PRISMA 2020 guidelines, a comprehensive search was conducted in electronic databases such as PubMed, Scopus, and Web of Science between April 21 and June 15, 2022. The methodological quality of the included studies was evaluated using the Effective Public Health Practice Project tool. A total of 12 primary research articles published in Portuguese, English, and Spanish were included. The study population consisted of athletes who were not taking potassium supplements. Criteria for eligibility, data sources, search strategies, study selection, and methods of analysis were meticulously followed to ensure a rigorous systematic review. Twelve studies (228 athletes, most of them football players) published between 2012 and 2020, mostly by Asia (n =6 studies; 50.0 %) and Europe (n =5; 33.4 %), and designed as longitudinal observational studies were synthesized. Out of the 12 included studies, 7 demonstrated an increase in potassium levels during exercise and a subsequent decrease after exercise. However, no definitive conclusions could be drawn, highlighting the need for further detailed studies to better understand the relationship between different sports and potassium level variations. Future studies are necessary to understand the effects of changes in potassium levels on the cardiac muscle due to the spurious correlation between potassium and cardiac arrest. This will help to establish more precise associations and implications for athlete health and performance.