Publications by authors named "Luiz B Silva"

Introduction: Understanding motivation, identifying motivational factors of health professionals, and recognizing how managers and leaders can successfully motivate healthcare professionals is a growing concern.

Objectives: To assess the occupational, sociodemographic, and health factors that influence the occurrence of demotivation in the intensive care unit professionals.

Methods: We performed a cross-sectional study with health professionals from nine intensive care units in João Pessoa, Paraíba state, Brazil.

View Article and Find Full Text PDF

. Work-related musculoskeletal disorders (WMSDs) are recurrent in the footwear industry, resulting in absenteeism. This study aimed to quantitatively analyze the influence of overtime work and physical recovery time on the occurrence of WMSD-related absenteeism using a system dynamics model.

View Article and Find Full Text PDF

Home office (HO) stands out as one of the most promising and popular forms of teleworking, especially after the COVID-19 pandemic. Therefore, many companies want to implement or maintain this working method, given its numerous advantages. However, there are adverse effects that are mainly related to physical and mental health.

View Article and Find Full Text PDF

Background: Educational environments can have environmental conditions that are incompatible with the needs of students, compromising their well-being and affecting their performance.

Objective: To identify the environmental variables that influence the performance of university students and measure this influence through an experiment in indoor environments.

Methods: The study applied an experimental methodology for three consecutive days in seven educational environments located in different regions of Brazil, measuring the environ-mental conditions, the students' perception of the environment, and their cognitive performance.

View Article and Find Full Text PDF

Microplastics are present in the environment, in drinking water, in human blood and there is evidence of nanoplastics in tap water. The objective of this work was to analyze the possibility of hemodialysis patients being contaminated by micro and nanoplastics (MNPs) during dialysis treatment. The motivation for this investigation is the fact that hemodialysis patients use about 300-600 L of drinking water per week, which may be contaminated by MNPs.

View Article and Find Full Text PDF

In healthcare professionals, musculoskeletal complaints are the most frequent health disorders with the greatest potential for productivity losses. The teamwork developed by these professionals can be a coping strategy, but it can also be one more demand for the maintenance of performance. For this reason, this research aimed to investigate the relationship between team workload and performance in healthcare workers with different intensities of musculoskeletal symptoms.

View Article and Find Full Text PDF

Background: The scientific literature has already identified the influence of thermal conditions on health and performance of students. However, users' opinions are often overwhelmed by normative evaluations, not receiving the necessary attention.

Objective: To quantitatively compare the influence of air temperature variability on the thermal perception of students from six air-conditioned teaching environments located in four regions of Brazil.

View Article and Find Full Text PDF

Background: Nursing is among the most stressful professions. Studies that examine possible factors that influence the mental workload (MWL) of nurses are of fundamental importance, because through these results, efforts can be concentrated on improving their working conditions more efficiently.

Objective: To investigate the influence of hospital infection on the MWL of nurses in an intensive care unit (ICU).

View Article and Find Full Text PDF

Background: Studies on illness in the footwear industry have prioritized specific work sectors and diseases.

Objectives: To analyze the main factors related to sickness absence and the indicators of illness in terms of recurrence and workdays lost among workers at a footwear company, ranging from storage of raw material to distribution of the final product.

Methods: A total of 9072 cases of absence from work were investigated in shoe production units from 2014 to 2017.

View Article and Find Full Text PDF

Background: Previous studies have observed that psychosocial factors are associated with an increase in work-related musculoskeletal disorders (WMSDs) in European countries. However, the influence of psychosocial factors on the WMSD symptoms has not been studied in detail. Additionally, working conditions differ between developing and developed countries.

View Article and Find Full Text PDF

Background: Considering that, environments with information and communication technology innovations, including educational institutions, are providing more interaction among individuals anywhere in the world and contributing to higher learning flexibility, it is necessary to pay extra attention to the radiation dissipated by technological equipment in these environments.

Objective: Investigate whether the behavior of the globe temperature (tg) in relation to the air temperature (ta) could affect the performance of students in information technology laboratories (ITLs).

Methods: The methodological procedures adopted consisted of the following analyses in six institutions: thermal variables - mean radiant temperature (trm) and (tg-ta); students' performance and architectural elements.

View Article and Find Full Text PDF

This article presents a systematic review, for which research was carried out in the following electronic databases: Web of Science, Scopus, PubMed, and ERIC, in which several articles were found ( = 560). The results were analyzed based on the information obtained in the titles and abstracts, and the remaining studies were read in full for the analysis. The aim of this article was to identify the different questionnaires used for selecting items of assistive technology, describe and evaluate the translation and transcultural adaptation procedures, characterize the thematic domains of each resource, evaluate the cultural adaptation process adopted, and describe the psychometric properties.

View Article and Find Full Text PDF

Background: The heavy and complex work routine in the intensive care unit (ICU) involves high workload, long working hours, high levels of tension, exposure to extreme situations and to hazards of different nature.

Objective: To investigate the influence of sociodemographic and organizational factors on the development of musculoskeletal pain, tension and fatigue among ICU professionals.

Methods: We interviewed 128 professionals from seven public hospitals in João Pessoa, Paraiba, Brazil.

View Article and Find Full Text PDF

Background: The increase in air temperature has been associated with human deaths, some of which are related to cardiovascular dysfunctions, and with the reduction of physical and cognitive performance in humans.

Objective: To analyze the relationship between blood pressure (BP) and heart rate (HR) and the cognitive performance of students who were submitted to temperature changes in classrooms.

Methods: The university students answered a survey that was adapted from the Battery of Reasoning Tests over 3 consecutive days at different air temperatures while their thermal state and HR were measured.

View Article and Find Full Text PDF

Objective: To assess the burden and quality of life of caregivers of patients with sickle cell anemia taking hydroxyurea versus those of patients not taking hydroxyurea.

Methods: A cross-sectional study was performed of caregivers of outpatients with sickle cell anemia in two public hospitals in Campo Grande, MS, from January through June 2010. The World Health Organization Quality of Life-BREF Scale and the Caregiver Burden Scale were used.

View Article and Find Full Text PDF

Objective: The main objective of this study is to evaluate the impact of school furniture and work surface lighting on the body posture of public Middle School students from Paraíba (Brazil).

Participants And Methods: The survey was carried out in two public schools and the target population for the study included 8th grade groups involving a total of 31 students. Brazilian standards for lighting levels, the CEBRACE standards for furniture measurements and the Postural Assessment Software (SAPO) for the postural misalignment assay were adopted for the measurements comparison.

View Article and Find Full Text PDF

The main objective of this study is to evaluate the impact of school furniture and work surface lighting on the body posture of two public Middle School students from Paraíba (Brazil). The target population included 8th grade groups involving 31 students. Brazilian standards for lighting levels, the CEBRACE standards for furniture measurements and the Postural Assessment Software (SAPO) for the postural misalignment assay were adopted for the measurements comparison.

View Article and Find Full Text PDF

Using scanning confocal microscopy, we measure the backscattered second harmonic signal generated by a 100 fs laser in rat-tail tendon collagen. Damage to the sample is avoided by using a continuous scanning technique, rather than measuring the signal at discrete points. The second harmonic signal varies by about a factor of 2 across a single cross section of the rat-tail tendon fascicle.

View Article and Find Full Text PDF

Background And Objective: The purpose of this study was to evaluate the ablation of ossicular tissue using a 1,053 nm Ti:Sapphire chirped pulse amplifier laser system configured to deliver ultrashort pulses of 350 femtoseconds (fs) (3.5x10(-13) seconds) in cadaver temporal bone.

Study Design/materials And Methods: Ablation of the formalin-fixed incus and stapes was performed using an ultrashort pulse laser (USPL) (0.

View Article and Find Full Text PDF