The beneficial effects of a water-based aerobic exercise session on the blood lipids of women with dyslipidemia are independent of their training status

OBJECTIVES: To evaluate the acute effects of a session of water-based aerobic exercise on the blood lipid levels of women with dyslipidemia and to compare these results according to their training status. METHOD: Fourteen premenopausal women with dyslipidemia, aged 40-50 years, participated in two water-based aerobic exercise sessions, the first when they were generally sedentary and the second after they were trained with a water-based aerobic training program for 12 weeks. Both experimental sessions were performed using the same protocol, lasted 45 min, and incorporated an interval method, alternating 3 min at a rating of perceived exertion (RPE) of 13 and 2 min at an RPE of 9. Total cholesterol (TC), triglycerides (TG), low-density lipoprotein (LDL), high-density lipoprotein (HDL), and lipoprotein lipase enzyme (LPL) were obtained through venous blood collection before and immediately after each session. A generalized estimating equation method and Bonferroni tests were conducted (with time and training status as factors) for statistical analyses. RESULTS: At enrollment, the mean age of the participants was 46.57 years (95% confidence interval [CI] 44.81−48.34). The statistical analyses showed a significant time effect for all variables (TC: p=0.008; TG: p=0.012; HDL: p<0.001; LPL: p<0.001) except for LDL (p=0.307). However, the training status effect was not significant for any variable (TC: p=0.527; TG: p=0.899; HDL: p=0.938; LDL: p=0.522; LPL: p=0.737). These results indicate that the TC and TG levels reduced and the HDL and LPL concentrations increased from pre- to post-session in similar magnitudes in both sedentary and trained women. CONCLUSIONS: A single water-based aerobic exercise session is sufficient and effective to beneficially modify the lipid profile of women with dyslipidemia, regardless of their training status.

Staphylococcus em um hospital de Porto Alegre (RS) / Staphylococcus in a hospital of Porto Alegre (RS)

Este estudo avaliou a prevalência de Staphylococcus isolados durante um ano em diferentes espécimes clínicos de pacientes internados no Hospital Divina Providência, Porto Alegre, RS. Quanto ao Staphylococcus aureus resistente à oxacilina (MRSA), a taxa mais alta foi observada nos pacientes que estavam internados nos andares (HDP), representando mais que o dobro das infecções do Centro de Terapia Intensiva (CTI). Os Staphylococcus coagulase negativo (SCN) são freqüentes contaminantes, mas constatou-se um aumento de sua participação como agente etiológico em bacteremias, tendo sido isolado em 52,6% das amostras de sangue. Umachado importante foi que, entre todos os SCN isolados, 81,4% apresentaram resistência à oxacilina (MRSCN). Faz-se importante a identificação das espécies de SCN uma vez que é possível o isolamento de S. lugdunensis, uma bactéria que deve ser consideradaequivalente ao S. aureus e também realizar a pesquisa de resistência a oxacilina de modo adequado. Assim, o tratamento pode ser conduzido de modo correto, sem subestimar a prevalência deste Staphylococcus coagulase negativo e a resistência a oxacilina.

This study evaluated the prevalence of Staphylococcus isolates during one year in samples of patients of the Divina Providencia Hospital, Porto Alegre, RS. The rate highest of MRSA was observed in the patients who were interned in the floors (HDP), representing more than the double of the infections of the CTI. The SCN are more frequent as contaminants and evidenced an increase of its participation as etiologic agent, mainly, in blood infection being isolated in 52,6% of the samples of blood. An important finding was that, between all the isolates SCN, 81,4% of them had presented resistance to the oxacilin (MRSCN). The identification of the species of SCN becomes important a time that is possible the isolation of S. lugdunensis, a bacterium that must be considered equivalent to the S. aureus. Thus, the treatment can be lead in adjusted way, without to devaluate the prevalence of this Staphylococcus coagulase negative.