Sergio Amaral

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BACKGROUND Studies involving chronic creatine supplementation in elite soccer players are scarce. Therefore, the aim of this study was to examine the effects of creatine monohydrate supplementation on lower-limb muscle power in Brazilian elite soccer players (n = 14 males) during pre-season training. FINDINGS This was a randomized, double-blind,(More)
OBJECTIVE To determine the patterns and clinical importance of saphenofemoral junction (SFJ) reflux in patients with chronic venous disease (CVD) and a normal great saphenous vein (GSV) trunk. METHODS Fifteen hundred consecutive patients were examined using duplex ultrasound (DU) in three centres. Patients with reflux involving the SFJ and/or its(More)
Sclerosis of the vessels has been extensively described in arteries but rarely in veins. Phlebosclerosis refers to the thickening and hardening of the venous wall. Despite its morphological similarities with arteriosclerosis and potential morbid consequences phlebosclerosis has gained only little attention. This is a narrative review based on a MEDLINE(More)
During recent years, public organizations have invested considerable resources in the implementation of Enterprise Resource Planning (ERP) systems, even using solutions initially targeted for manufacturing companies. The interest generated by the ERP phenomenon in the public-sector still growing and the particularities of this sector make specific studies(More)
To support effective decision making, engineers should comprehend and manage various uncertainties throughout the design process. Unfortunately, in today’s modern systems, uncertainty analysis can become cumbersome and computationally intractable for one individual or group to manage. This is particularly true for systems comprised of a large number of(More)
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