There are about 10004 clinical studies being (or have been) conducted in Brazil. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The aim of this proposal is to evaluate the causal relationship between Zika virus (ZIKV) infections in pregnancy and congenital malformations. We will estimate the absolute and relative risks of congenital malformations and other adverse outcomes of pregnancy among women who become infected with ZIKV during pregnancy compared to uninfected pregnant women, also leading to further validation of the Congenital Zika Syndrome.
Lumbar pain is one of the most common injuries being the cause of morbidity in the individual generating occupational disability with strong personal, social and economic impact. As one of the methods of treatment, Pilates is a method that has good results for the management of this dysfunction. However, it is not known exactly which approach Pilates can bring better results for this population. Therefore, the purpose of this study is to compare the effects of two types of Pilates method interventions on non-specific chronic low back pain. A blinded randomized clinical trial, will be held. 28 patients divided randomly into two groups will be assessed, the Mobilization Pilates (MP) and the Stabilization Pilates (SP). Both groups will be formed by individuals of both sexes and aged 21 to 41 years with chronic low back pain. Both groups will receive 10 sessions of Pilates Methods twice a week, with each session taking an average of 50 minutes, therefore the MP will focus on a lumbo-pelvic mobilization exercises approach and the SP will focus on lumbo-pelvic stabilization exercises approach. At the beginning and end of the 5 weeks the individuals are evaluated to verify the presence of pain and disability with VAS of pain and Oswestry Questionnaire, and also with the Functional Movement Screen. Data will be analyzed statistically.
The purpose of this study is to determine wether postoperative immobilization is effective in controlling the pain of patients with intra-articular distal radius fractures treated with volar locking plate fixation. The study hypotheses is that postoperative immobilization does not enhance the analgesia of these patients.
The pulp therapy in primary teeth is designed to eliminate the infection and keep the tooth in a functional state until its natural exfoliation. An important step for the success of endodontic therapy is the final restoration, which must seal the tooth, avoiding new contamination. Thus, this study proposes to carry out a randomized clinical trial with longitudinal follow-up of two years, in order to compare the degree of success of endodontic treatment in primary teeth restored with two different techniques: composite resin (Filtek Bulk Fill - 3M ESPE) or stainless steel crowns (3M ESPE). Success will be measured by clinical and radiographic features of primary teeth treated with the different restorations after 1, 6, 12 and 24 months. Among the secondary outcomes that will be assessed are the quality and durability of restorations and the cost benefit of treatments. Patients who seek the university clinics and require endodontic treatment will be invited to participate. The sample unit is the tooth and these will be randomized in groups through a randomization list created and distributed in sequential opaque envelopes. The envelope will be opened only after the end of endodontic treatment, to ensure allocation concealment. The data will be statistically analyzed using the Stata 12.0 (Stata Corporation, College Station, TX, USA). The longevity of the treatments will be evaluated by estimating survival rates using the Kaplan-Meier method. Differences between survival rates according to the type of endodontic proposed treatment will be analyzed using the log-rank test. All other clinical variables will be analized using Cox regression. The significance level for all analyzes will be 5%.
This research program aims to comprehensively investigate the clinical, physiological, metabolic, and molecular effects of reducing sedentary behavior in rheumatoid arthritis. To this aim, we will conduct a 4-month parallel-group randomized controlled trial aiming to investigate the feasibility and efficacy of a newly developed personalized intervention focused on replacing sedentary time with light-(or very light-) intensity physical activity in rheumatoid arthritis. Additionally, a sub-sample of patients will complete a randomised cross-over study aiming to unravel potential mechanisms underlying the metabolic, physiological and molecular effects of breaking up sedentary time with light-intensity physical activity versus carrying out the minimum amount of daily exercise at once and then remaining sedentary versus simply remaining sedentary throughout all sessions, in a well-controlled laboratorial condition.
Objectives: To assess if the administration of ulipristal acetate (UPA) in users of the levonorgestrel-releasing intrauterine system (LNG-IUS) with breakdown bleeding or abnormal bleeding, could be able to inhibit the bleeding and if this effect will be sustainable up to three months after treatment. Material and methods: A total of 32 women aged between 18-45 years, users of the LNG-IUS with breakdown bleeding, abnormal bleeding or prolonged bleeding (bleeding more than 14 days) or episodes of bleeding with intervals less than 24 days). The study is an experimental, double blind randomized (16 women will receive UPA 5 mg/day/5 days; 16 women will receive placebo/1 time/day/5 day). The women will invited to participated at the Family Planning clinic at the day they consulted with the complaint of bleeding. That day they will allocated at random to UPA or placebo group. They will oriented to fill out a bleeding calendar through 90 days after the pill intake. In addition a ultrasonography scan will be perform before the first day of pill intake and at 90 days after. Statistical analysis: A a pilot study the sample was estimated in 26 women (13 at each group) based at the estimative of success of 0.95 with UPA and 0.35 with placebo with significance of 0.05 and power of 80%. The sociodemographic characteristics will be analyzed as mean and SD and will compared through Mann-Whitney, Yates χ2 and Fisher exact tests as apropriate. Also, a regression analysis (Poisson analysis) with the dependent significant variables. The established level of significance will be p < 0.05.
This project aims to evaluate if after 14 days of grape juice ingestion there is improvement of the parameters of strength, fatigue and oxidative stress in judo fighters. The study will be a randomized, blind, crossover clinical trial of 20 Judo athletes. Judo wrestling simulations will be performed on 3 different days.
The investigators propose to assess one method of sperm selection based on the characteristics of spermatozoa recently introduced: Sperm Selection Assay, which used a gradient of concentration of progesterone to act as chemoatractant of spermatozoa of better quality. We will assess in vitro fertilization with two techniques (SSSA versus traditional technique of swin up) as well as embryo development.
Pulmonary hypertension (HP) is a progressive pathological condition presents with vascular changes in the lung. Cardiopulmonary changes in PH are considered the main limiting factor, however, it is known that the muscular alterations potentiate the symptomatology. Several HP factors and mechanisms have an impact on peripheral and respiratory muscle changes, so, specifically, respiratory muscles are also altered in patients with PH. In the face of respiratory muscle weakness, inspiratory muscle training (IMT) has been shown to increase respiratory muscle strength and functional capacity in chronic conditions such as obstructive pulmonary disease (COPD) and heart failure (HF). The objective of this study is to test whether a 12-week TMI protocol is capable of impacting functional capacity, respiratory muscle strength, spirometric values and quality of life in patients with PH.
The purpose of this study is to assess the efficacy of a single (first) dose of 3 fixed doses of intranasal esketamine {28 milligram (mg), 56 mg, and 84 mg} compared with psychoactive placebo (oral midazolam) in rapidly reducing the symptoms of major depressive disorder (MDD) including suicidal ideation in participants 12 to less than 18 years of age who are assessed to be at imminent risk for suicide.