Publications by authors named "Aristides M Machado-Rodrigues"

Background: This study aimed to examine the reliability and criterion validity of three physical activity questionnaires in Brazilian military soldiers.

Methods: A convenience sample of 109 male Air Force soldiers (18.86±0.

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Objective: Following the last global economic crisis, Europe imposed austerity policies with significant influence on the households' food security. This study aimed to examine the characteristics of food-insecure households with children with normal body weight and overweight/obesity with other sociodemographic and family characteristics, following the last world financial crisis.

Methods: A cross-sectional study was conducted with 4737 children living in Portugal.

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Background/objectives: Previous research has indicated that gender differences exist in the relationship between neighborhood socioeconomic (SE) deprivation and childhood excessive body weight. However, none of these studies were conducted in a metropolitan area of southern Europe. This study aims to investigate whether the association between neighborhood SE deprivation and childhood excessive body weight in the capital of the Porto Metropolitan Area is influenced by gender.

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: Research considering objectively measured moderate-to-vigorous physical activity (MVPA) and sedentary behaviors (SB) and health outcomes among urban children has produced equivocal findings. Therefore, this study was designed (i) to compare MVPA and SB of urban and non-urban children and (ii) to analyze associations between the risk of overweight and MVPA of children by their degree of urbanization. : The sample comprised 389 children (195 girls) aged 6 to 10 years.

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Background And Objectives: Childhood obesity and being overweight are influenced by the family environment, diet, sleep, and mental health, with parents playing a key role in shaping behaviors through routines and practices. Healthy parental habits can encourage positive outcomes, while poor routines and stress often lead to unhealthy weight gain. This study analyzed the impact of parental behaviors on children's lifestyles and habits, as well as the trend and intensity of the effect of these behaviors on different age groups.

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Objectives: This study aimed to (i) compare children's lifestyle by urbanization level and (ii) examine the association between children's body mass index (BMI) and the risk of having unhealthy sleep (American Academy of Pediatrics).

Methods: Eight thousand one hundred fifty-nine children (4124 females) aged 6-9 years were observed and classified as urban or nonurban. Height and weight were measured, and the BMI was calculated.

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Background/objectives: The associations between low birth weight (LBW) and the aggregation of metabolic risk factors (MRF) in youth remain ambiguous. Thus, this study analysed the interrelationship among MRF, LBW, and behavioural factors in adolescents.

Methods: The sample of the present cross-sectional study comprised 491 youth (229 males, 262 females) aged 14-17 years.

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Participation in regular physical activity (PA) is associated with numerous health benefits, including improvement in adolescents' mental health. The current study aimed to assess the effects of a 12-week physical activity intervention on psychological symptoms of adolescents. The sample of this controlled randomized study was composed by 150 adolescents aged 12 to 15 years old.

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Article Synopsis
  • - The study aimed to investigate differences in ultra-processed food (UPF) consumption, sedentary behavior, and well-being perceptions between adolescent boys and girls while exploring the link between UPF consumption and the risk of overweight and overall well-being.
  • - It involved 245 adolescents aged 12-17, measuring factors like BMI, total body fat, daily UPF intake using the NOVA classification, and sedentary behavior, along with psychosocial well-being assessed through standardized questionnaires.
  • - Results indicated no significant sex differences in UPF consumption, but boys reported higher levels of computer use and gaming, along with better well-being scores than girls; overall, higher UPF consumption was associated with an increased risk of being overweight among
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  • - This study examined how different criteria of physical activity (CoPs) affect the classification of active preschoolers, analyzing data from 134 children aged 3-5 using a tri-axial accelerometer over seven days.
  • - The Pate CoP classified the highest percentage of children as active on both weekdays (73.9%) and weekends (85.6%), while the Johansson CoP labeled all participants as inactive.
  • - There was a notable gender difference in activity levels, with more boys being classified as active compared to girls, and overall activity rates were lower on weekends, particularly among females. The choice of CoPs significantly impacted the results.
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The present study investigated the mediating effects of emotional intelligence and self-esteem between youth sports participation and life satisfaction, as well as the comparative effects of different types of sports involvement (team, individual, and non-participation) on these selected variables. A sample of 1053 Portuguese adolescents (612 girls and 441 boys), aged between 12 and 18 years ( = 14.40; = 1.

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Article Synopsis
  • The study investigates how different types of organized sports affect children's daily physical activity (PA) and sedentary time (ST) to inform strategies that promote more active lifestyles among kids.
  • The research involved 410 children aged 6-10 years, with a focus on 332 who participated in organized sports, and used accelerometers to measure their activity for seven days.
  • Findings revealed that only 30% of children met PA guidelines while sports significantly influenced activity levels, with outdoor and team sports correlating with higher vigorous PA and lower ST, indicating that sport type matters for achieving recommended activity levels.
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  • The study looked at how certain genetic variants (PCSK1) might influence the risk of obesity in Portuguese children aged 5-13.
  • Logistic regression showed no significant links for the overall population, but a slight association was found in boys related to one specific variant (rs6235), indicating they might be more at risk.
  • Findings suggest that the impact of this genetic variant on obesity differs between boys and girls, indicating the need for sex-specific approaches in future obesity research.
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The present study examines whether the association of the neighborhood environment and overweight in children is moderated by age. This was a cross-sectional study of 832 children aged 3 to 10 years living in the city of Oporto (Portugal). Children were recruited under the scope of the project "Inequalities in Childhood Obesity: The impact of the socioeconomic crisis in Portugal from 2009 to 2015.

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The association of the rs4420638 polymorphism, near the APOC1 gene, was examined with the risk of obesity among Portuguese children. A sample of 446 Portuguese individuals (231 boys and 215 girls) of European descent, aged 3.2 to 13.

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Background And Aims: Objective assessment of physical activity (PA) using accelerometers and pedometers has become more accurate and common practice in the study of childhood overweight. The study aimed: i) to compare PA levels and body shape of boys and girls, and assess compliance of active children with the PA recommendation; ii) to analyse associations between the risk of overweight and the moderate-to-vigorous physical activity (MVPA) in children.

Methods: The sample comprised 395 children (198 girls) aged 6-10 years.

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Objectives: We investigate associations between children exposure to stressful events, considering: (1) the period in which the event took place, (2) the type of event, and (3) the cumulative effect of the events on children's weight, height and body mass index (BMI).

Methods: A total of 8429 Portuguese children (3349 exposed to at least one stressful event during their lifetime; 50.2% males; mean age = 7.

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Objectives: This study aimed to describe the relationship between body size, form, and composition, and children's lifestyle on health-related quality of life (HRQoL).

Methods: This cross-sectional study comprised 1333 children (9.05 ± 0.

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Article Synopsis
  • A study in Portugal examined how parents' views of their neighborhoods affected screen time in kids aged 3-10.
  • The research involved over 6,300 children and focused on how social and physical aspects of the environment influenced screen usage, with a notable impact on girls compared to boys.
  • The findings suggest that enhancing the social environment and creating supervised after-school programs could help reduce children's screen time and promote outdoor activities.
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This study investigated the household food insecurity (HFI) among Portuguese children following the last world financial crisis. A cross-sectional study was conducted on 4737 Portuguese children (3-11 yrs). Socio-demographics, food insecurity, and household geographic location were assessed via questionnaire.

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Objective: Sedentary behaviours, even at an early age, are associated with potential health risks such as obesity, some cardio metabolic risk factors, poorer mental health, and lower levels physical fitness. The aim of this study was twofold: i) to compare objectively measured sedentary time and physical activity (PA) levels in its different intensity portions between boys and girls; ii) to analyse associations among the risk of overweight and moderate-to-vigorous physical activity (MVPA) in pre-school children.

Methods: The present cross-sectional study comprised a sample of 134 children (70 males) aged 3-5 years.

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Objectives: Further evidence on how the Great Recession was associated with childhood obesity is needed, particularly when the world is facing a new and severe economic downturn caused by the COVID-19 pandemic. This study explores: (1) the direct association of the 2008's economic crisis with eating patterns and body mass index (BMI), among children, independently of their socioeconomic status (SES), and (2) the indirect association between the crisis and children's BMI, by using eating patterns as mediators.

Methods: A sample of children (n = 8472, mean age: 7.

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Objectives: The present study aimed to analyze the association between healthy sleep duration of children and the parental perception of the social/built environment.

Methods: A cross-sectional study was done and a sample of 8273 children (4183 females) aged 6-9 years was observed. Height (cm) and weight (Kg) were measured, and the body mass index (BMI) was calculated.

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Objectives: Physical activity (PA) is required for healthy growth, development, and maturation and plays an important role in the prevention of overweight and obesity in childhood and adolescence. Sex-differences in PA levels are well documented, with boys spending more time in PA, especially in moderate-to-vigorous activities. Following the Life History Theory, our aim is to study if PA affects the fat tissues increases during childhood and juvenile phases in both sexes.

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