Sandro Sperandei

Sandro Sperandei
Western Sydney University · Translational Health Research Institute

Doctor of Philosophy

About

70
Publications
159,544
Reads
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1,000
Citations
Additional affiliations
February 2019 - present
Western Sydney University
Position
  • Analyst
May 2014 - April 2019
Fundação Oswaldo Cruz
Position
  • PostDoc Position
February 2012 - January 2014
Federal University of Rio de Janeiro
Position
  • Biostatistics
Education
August 2009 - December 2013
Rio de Janeiro State University
Field of study
  • Statistics
January 2009 - May 2013
Fundação Oswaldo Cruz
Field of study
  • Computacional Biology and Systems
March 2006 - September 2007
Universidade Gama Filho
Field of study
  • Physical Exercises Applied to Cardiac Rehabilitation and Special Groups

Publications

Publications (70)
Article
Hospital data are a key source of timely information on intentional self-harm and the only routinely available source for the surveillance of a national public health priority. However, the extent to which accurate information on intentional self-harm is captured, or coded appropriately, in these data sources may be variable. This is important beca...
Article
Full-text available
Purpose: Transition from employment to retirement may be detrimental to mental health, and associated with suicidal behaviour. This study investigated the association between employment and retirement status and suicidal behaviour among older aged Australians. Methods: This study was based on the '45 and Up Study', a large prospective cohort stu...
Article
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Purpose Physical distancing policies in the state of New South Wales (Australia) were implemented on March 23, 2020, because of the COVID-19 pandemic. This study investigated changes in physical activity, dietary behaviors, and well-being during the early period of this policy. Methods A cohort of young people aged 13–19 years from Sydney (N = 582...
Article
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Logistic regression is used to obtain odds ratio in the presence of more than one explanatory variable. The procedure is quite similar to multiple linear regression, with the exception that the response variable is binomial. The result is the impact of each variable on the odds ratio of the observed event of interest. The main advantage is to avoid...
Article
The purpose was to assess RDS estimators in populations simulated with diverse connectivity characteristics, incorporating the putative influence of misreported degrees and transmission processes. Four populations were simulated using different random graph models. Each population was “infected” using four different transmission processes. From eac...
Article
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Background: This study investigated the trends in primary mental health care (PMHC) service use and hospital-treated self-harm in Western Sydney (Australia). Methods: A data linkage study and descriptive ecological study of PMHC referrals investigated the trends in referrals, treatment attendance, hospital-treated self-harm, and health care prac...
Article
Background: Hospital-presenting self-harm is a strong predictor of suicide and has substantial human and health service costs. Aims: We aimed to identify changes in case ascertainment after implementation of a new self-harm reporting field at a tertiary hospital in New South Wales, and to report event rates, demographic, and clinical characteristic...
Article
Objectives This study investigated trends in hospital-treated self-harm and hospital presenting suicidal ideation in the period before and after COVID-19 public health responses by key socio-demographic groups among those presenting to hospitals in the Western Sydney (Australia) population catchment. Methods Emergency department presentations for...
Article
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Background Trans women have been shown to experience disproportionately poor outcomes in physical and mental health. Although it is common to talk about the violence against trans people, little is still known about mental health outcomes and experiences of suicidality among trans women, particularly in developing countries. This study aims to inve...
Article
Introduction Meta-analyses show antidepressant initiation has increased risk of suicidal behavior <25 years, no difference 25–64 years and reduced risk 65+ years. Estimating risks from RCTs has limitations and real-world population estimates are uncommon. Methods A self-controlled case series reporting incidence rate ratio (IRR) between exposed an...
Article
Background The increased prevalence of obesity, unhealthy diet and sedentary lifestyles among Australian adolescents has become a public health concern. This study investigated the associations between socio-economic status, screen-time, social networks, sleep, and wellbeing and subsequent health behaviours. Methods A cohort of 582 adolescents age...
Article
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Background: This study investigated the associations between employment transitions and psychological distress among a cohort of 45 years and older Australians. Methods: This study was based on the 45 and Up Study, a large prospective cohort of participants aged 45 years and older (N = 267,153), followed up over the period 2006–2015. The risk of ps...
Article
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PurposeTransition from work to retirement may be associated with poor mental health outcomes in older-age groups, especially among those of lower socio-economic position (SEP). This study investigates the association between low educational achievement and mental health status, and the mediating role of employment status and income level among olde...
Article
Student mental health is of growing concern for the university education sector. Supporting opportunities to increase mental health literacy of students is one strategy in which universities and colleges are actively investing to support students build their capacity to be well. This study is a systematic review of mental health literacy training (...
Article
Universities across the world remain under‐resourced and frequently unequipped to provide the required support to the increasing demand of students experiencing mental health problems. While there is a considerable amount of research focusing on university student stress levels, interventions to address them, and coping strategies adopted by studen...
Article
Issue addressed This study aimed to analyse the relationship between peer‐delivered health promotion programs and student wellbeing, and to expand the limited body of research examining peer‐to‐peer mental health promotion as experienced by student leaders. Methods The study was cross‐sectional and focused on the experience of participants of a Sy...
Preprint
Full-text available
Objective: To investigate the impact of different logistic regression estimators applied to RDS samples obtained by simulation and real data. Methods: Four simulated populations were created combining different connectivity models, levels of clusterization and infection processes. Each subject in the population received two attributes, only one of...
Article
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This study provides an exploration of the meanings of leisure for humanitarian migrants in regional Australia and these meanings' implications for health. It uses mixed-methods to explore leisure-time physical activity participation and day-today experiences of leisure and health. A sample representing approximately one third of the Coffs Coast adu...
Article
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This study analyzes the spatial dynamics of drug users' recruitment chains in the context of a respondent-driven sampling (RDS) study in the city of Recife, Brazil. The purpose is to understand the geographic bottlenecks, influenced by social geography, which have been a major challenge for RDS-based studies. Temporo-spatial analysis was used. Sequ...
Article
This cross-sectional study reports on the relationship between objectively-assessed quality of physical activity resources (PARs) and frequency of use within two low income neighborhoods in Rio de Janeiro, Brazil. The Physical Activity Resource Assessment was used to assess the quality of all PARs of the two neighborhoods (n = 60). Frequency of use...
Article
Issue addressed: University students have been increasingly recognised as a population with a high prevalence of mental ill health, with research suggesting that psychological distress is higher among tertiary education students than non-students The purpose of this study was to assess students' perceptions of the effectiveness of student-led, cam...
Article
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Introduction: Travestis and transgender women resort to the use of hormones for body modification. Due to restrictions in the access to health services, self-medication is frequent. The aim of this study was to describe the self-reported prevalence of hormones used by travestis and transgender women in the Federal District. Method: This is a cross...
Article
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This study aims to evaluate adherence, dropout, lapse and return rates of members of a fitness center in the city of Rio de Janeiro, Brazil, and the potential explanatory variables for these phenomena. The study was exploratory and observational, using a retrospective longitudinal frame of reference. The records of 5242 individuals, members of the...
Article
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Balance training has been named by different terms. The research goal was to analyze the types of exercises related to those terms. Original Scopus database papers, in English or Portuguese, published until 2013 were included. The terms of interest should be on title or within the paper keywords. The most frequent term was Balance training/ exercis...
Article
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Different sampling strategies, analytic alternatives, and estimators have been proposed to better assess the characteristics of different hard-to-reach populations and their respective infection rates (as well as their sociodemographic characteristics, associated harms, and needs) in the context of studies based on respondent-driven sampling (RDS)....
Article
Objective To assess the quality of public physical activity resources (PARs) in a low socio-economic community in the Olympic city of Rio de Janeiro. Methods The Physical Activity Resource Assessment (PARA) instrument was used to assess all 29 public PARs located in this community. A Quality Indicator (QI) was developed based on PARA results. Resu...
Article
Objective: To evaluate the attrition rate of members of a fitness center in the city of Rio de Janeiro and the potential explanatory variables for the phenomenon. Design: An exploratory, observational study using a retrospective longitudinal frame. Methods: The records of 5240 individuals, members of the fitness center between Jan-2005 and Jun-2...
Conference Paper
Full-text available
Respondent­driven sampling (RDS) is nowadays a well­known sampling method. However, although it is able to find members of hard­to­reach populations, the estimates generated by it remain a point of concern. The evaluation of those estimates is difficult due to the lack of knowledge about the actual parameters from the vast majority of hidden popula...
Article
Background: The aim of this study was to assess the physical activity profile of taxi drivers and its relationship with hypertension prevalence in this group of workers. Methods: Cross sectional exploratory study. Between November 2008 and April 2009, 491 taxi drivers from Rio de Janeiro, Brazil, answered a questionnaire focusing on previous hyp...
Article
Background and Objectives An attenuated heart rate recovery (HRR) response after exercise testing is a robust predictor of mortality. Regular exercise can enhance various physiological parameters. Studies indicate that participation in a cardiac rehabilitation program can improve heart rate recovery. The aim of this study was to analyze changes in...
Article
The objective of this study was to analyse physical activity patterns of women living in a low-income community located in close proximity to the 2016 Rio de Janeiro Olympic Park. Data (N = 140) was collected in June and July 2012 using the International Physical Activity Questionnaire. Findings indicate that the majority (54.8%) of participants re...
Article
Full-text available
Somatosensory electrical stimulation (SES) has been proposed as an approach to treat patients with sensory-motor impairment such as spasticity. However, there is still no consensus regarding which would be the adequate SES parameters to treat those deficits. Therefore, the aim of this study was to evaluate the effects of applying SES over the forea...
Article
Full-text available
Somatosensory electrical stimulation (SES) has been proposed as an approach to treat patients with sensory-motor impairment such as spasticity. However, there is still no consensus regarding which would be the adequate SES parameters to treat those deficits. Therefore, the aim of this study was to evaluate the effects of applying SES over the forea...
Article
Introdução e Objetivos: A resposta atenuada da recuperação da frequência cardíaca após o teste de exercício é um robusto preditor de mortalidade. A prática regular de atividade física é capaz de aprimorar diversos parâmetros fisiológicos. Estudos indicam que a participação em programa de reabilitação cardíaca pode melhorar a recuperação da frequênc...
Research
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A resposta atenuada da recuperação da frequência cardíaca após o teste de exercício é um robusto preditor de mortalidade. A prática regular de atividade física é capaz de aprimorar diversos parâmetros fisiológicos. Estudos indicam que a participação em programa de reabilitação cardíaca pode melhorar a recuperação da frequência cardíaca. Assim, o ob...
Article
Full-text available
The aim of this study was to assess the physical activity profile of taxi drivers and its relationship with hypertension prevalence in this group of workers. Cross sectional exploratory study. Between November 2008 and April 2009, 491 taxi drivers from Rio de Janeiro, Brazil, answered a questionnaire focusing on previous hypertension diagnosis, occ...
Article
Full-text available
Graphics are powerful tools to communicate research results and to gain information from data. However, researchers should be careful when deciding which data to plot and the type of graphic to use, as well as other details. The consequence of bad decisions in these features varies from making research results unclear to distortions of these result...
Article
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This article proposes an alternative way of analyzing the support commonly given by different members of host communities to staging large-scale sport events. It includes the contextualization of this phenomenon within the concept of the “society of the spectacle” and its derivate economy of appearances. Drawing from Debord we argue that the desire...
Article
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The study examined the impact of individual characteristics (gender, age, BMI, body fat percentage) and monthly frequency of practice on regular access to the gym. Anthropometric measures of 1573 subjects of both sexes (male: n = 840; age 32.5 ± 8.9 years) were assessed at the beginning of the ex-ercises program. The Average Monthly Frequency (AMF)...
Article
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The scope of this study was to identify the prevalence of systemic arterial hypertension among adolescent students (aged 17-19 years) in the third and final year of high school in state schools in the municipality of Rio de Janeiro, and to investigate associations between systemic arterial hypertension and obesity and physical activity levels. Data...
Article
Objective: The objective of this study is to investigate the influence of the day-to-day variability of the measures of heart rate variability (HRV) on the sample size calculation for the study of cardiac autonomic neuropathy. Material and methods: We analyzed HRV in the frequency domain [very low (VLF), low (LF), and high frequency (HF) bands]...
Article
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Resumo: O tema "exercícios contraindicados" é fonte de calorosos debates entre estudantes e profissionais de Educação Física. Este trabalho apresenta uma nova forma de olhar estes exercícios, tanto no que diz respeito à sua classificação, quanto no modo de abordar a controvérsia. O exercício de puxada por trás é utilizado como exemplo para a aborda...
Article
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O objetivo do estudo foi identificar a prevalência de hipertensão arterial sistêmica em adolescentes estudantes do 3º ano do ensino médio de escolas públicas estaduais dentro do município do rio de Janeiro com idade entre 17 e 19 anos, bem como investigar as associações de hipertensão arterial sistêmica com obesidade e níveis de atividade física. D...
Article
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I read with great interest the article by Hegde et al. (1), which investigated the effects of 3-month yoga practice on oxidative stress, glycemic control, blood pressure control, and anthropometry in type 2 diabetic patients with or without complications, in comparison with control subjects on standard care. In the face of the increasing prevalence...
Article
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An awareness of the repeatability of biological measures is required to properly design and calculate sample sizes for longitudinal interventional studies. We investigated the day-to-day repeatability of measures of systemic microvascular reactivity using laser Doppler perfusion monitoring. We performed laser Doppler perfusion monitoring in combina...
Article
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To assess the influence of a non-pharmacological intervention, consisting of a diet low glycemic index (GI) for a period of six months on metabolic control and anthropometric parameters in patients with type 1 diabetes mellitus. Ninety-six type 1 diabetic patients underwent an anthropometric, biochemical and dietary assessment before and six months...
Conference Paper
Full-text available
The aim of this study was to evaluate six different methods of relative quantification of realtime RT-PCR on simulated data. We conducted four experiments where we simulate changes in efficiency and scale. We calculated the limits of agreement between the simulated and quantified data by different methods. The CpD1 method proved to be the best opti...
Article
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The importance of achieving and maintaining an appropriate metabolic control in patients with type 1 diabetes mellitus (DM1) has been established in many studies aiming to prevent the development of chronic complications. The carbohydrate counting method can be recommended as an additional tool in the nutritional treatment of diabetes, allowing pat...
Article
The purpose of this work was to evaluate the activity of the primary motor muscles during the performance of 3 lat pull-down techniques through surface electromyography (EMG). Twenty-four trained adult men performed 5 repetitions of behind-the-neck (BNL), front-of-the-neck (FNL), and V-bar exercises at 80% of 1 repetition maximum. For each techniqu...
Article
Full-text available
Objective: To describe the injury prevalence possibly related to climbing and their implications in an indoor climbing wall of a gym. Materials and Methods: Between 540 customers of a climbing wall, have been selected 27 subjects to answer a questionnaire about their climbing habits and injuries. The minimum inclusion criteria were: two consecutive...
Article
Full-text available
To assess the reliability of classification of nutritional status (NS) obtained through the body mass index (BMI) and three different methods of body composition (BC) in individuals type 1 diabetics (T1D) and non-diabetic subjects. 84 patients with T1D and 37 controls were evaluated. Anthropometric data was collected to calculate BMI and assessment...
Article
Full-text available
OBJECTIVE: To assess the reliability of classification of nutritional status (NS) obtained through the body mass index (BMI) and three different methods of body composition (BC) in individuals type 1 diabetics (T1D) and non-diabetic subjects. METHODS: 84 patients with T1D and 37 controls were evaluated. Anthropometric data was collected to calcula...
Article
Full-text available
Objective: To assess the reliability of classification of nutritional status (NS) obtained through the body mass index (BMI) and three different methods of body composition (BC) in individuals type 1 diabetics (T1D) and non-diabetic subjects. Methods: 84 patients with T1D and 37 controls were eva- luated. Anthropometric data was collected to calcul...
Conference Paper
Full-text available
Despite great promises for functional genomics discovering, the statistical analysis of cDNA microarray data is still a bottleneck. Different approaches have been tested so far. In this work, we compared SAM statistic with a Bayesian ttest, a non-parametric and a parametric approach, respectively, in the discovering of differentially expressed gene...
Article
Full-text available
OBJECTIVE: To verify the test-retest 1RM reproducibility in the lat pulldown exercise. METHODS: Twenty-six healthy and physically actives men (25 ± 3 years, 76.8 ± 9.86 kg, 177 ± 5.3 cm, 12.5 ± 4.25 % body fat) signed an informed consent before participate in this study. The data was collected in two visits, 48-72 hours apart. During the first visi...
Article
Full-text available
RESUMO Objetivo: Verificar a reprodutibilidade teste-reteste do teste de uma repetição máxima (1RM) no exercício de puxada pela frente. Métodos: 26 homens adultos saudáveis e ativos (25 ± 3 anos, 76,8 ± 9,86kg, 177 ± 5,3cm, 12,5 ± 4,25% de gordura) assinaram consentimento antes de participar deste estudo. A coleta de dados foi feita em dois dias, s...
Article
Objective: To verify the test-retest 1RM reproducibility in the lat pulldown exercise. Methods: Twenty-six healthy and physically actives men (25 +/- 3 years, 76.8 +/- 9.86 kg, 177 +/- 5.3 cm, 12.5 +/- 4.25% body fat) signed an informed consent before participate in this study. The data was collected in two visits, 48-72 hours apart. During the fir...
Conference Paper
Full-text available
Microarray is a technique that enables the comparative analysis of genetic expression between two different phenotypic conditions. For an adequate comparison, the available data requires some transformations to correct and adjust data. Three methods are currently in more common use: Shift, Linlog and Lowess transformations. Our objective is to eval...