Relationship of Lifestyle Habits and Health Characteristics of Parents and Children

Objective measure of physical activity

The objective measurement of physical activity will be performed using the Actigraph GT3X accelerometer (ActiGraph, LLC, Pensacola, FL, USA). Evaluated will remain with the equipment for five full days (three weekdays and two weekend days).

Subjective measure of physical activity

Physical activity in different domains will be assessed using the questionnaire by Baecke et al. (1982). This instrument assesses the practice of physical activity through 16 questions in the last twelve months considering physical effort at work (for adults) and at school (for children and adolescents), the practice of sports activities or systematic exercises during leisure time and activities occupation in free time. In the field of work or school (in the case of children and adolescents), issues relating to physical efforts carried out at work are investigated, such as: time spent sitting, standing and walking in the work environment, carrying weights, whether the subject being assessed sweats a lot at work and how tired you feel after a day of work. In the leisure domain, leisure-time physical activity is considered, such as exercising at the gym or playing sports.

Practice of physical activity in childhood and adolescence

To evaluate the practice of physical activity in childhood (ages 7 to 10 years) and adolescence (11-17 years) two questions will be asked: whether they practiced any type of sport in these stages of life under the supervision of a teacher, with two alternatives of answer: yes or no.

Sedentary behavior (subjective measure)

To assess sedentary behavior, participants (parents and children) will answer the Sedentary Behavior Questionnaire (SBQ). It includes the domains of sedentary behavior (watching TV, playing video games and computer, sitting listening to music, sitting talking on the phone, working on the computer or bureaucratic tasks {e.g. answering emails}, playing a musical instrument, doing construction work art or crafts, sitting in a car, bus, or train) during the week and on weekends.

Sedentary behavior (objective measure)

To assess CS with direct measurement, participants will use the Actigraph GT3X (ActiGraph, LLC, Pensacola, FL, USA). The accelerometer data will be filtered, digitized and adjusted to a frequency of 30Hz with an interval (epoch) of 60 seconds. The accelerometer will be analyzed by ActiLife 6 software (ActiGraph, LLC, Pensacola, FL, USA). Data will be considered complete if the participant wears the accelerometer for at least 10 hours per day for 4 days. It will be used to characterize sedentary behavior when measuring \<100 counts/min (\< 1.5 METs). The outcome of interest will be the time spent in sedentary activity, the number of minutes per day, which will be converted into hours for the analyses, according to the cutoff point of Matthews et al. (2008).

Blood pressure

Blood pressure will be assessed using an Omron automatic blood pressure measuring device (Model HEM-742, Japan).

Smoking

Smoking will be assessed using the following question: Do you smoke, have you smoked, or have you never smoked? If you smoke, how many cigarettes do you usually smoke per day, considering the last month? If you have smoked, how long have you smoked and how long have you stopped smoking?" Exposure to tobacco among non-smokers and ex-smokers will be assessed by the following question: "Do you have close contact with any smokers? Yes or no?"

Alcoholism

Alcohol consumption will be assessed by the weekly frequency of alcohol intake and the number of doses consumed. Adults who reported drinking alcoholic beverages with a frequency equal to or greater than 1-2 days a week with an intake of 1-2 drinks per day will be considered to have high alcohol consumption (each dose will correspond to 250 ml for beer and 40 ml for soft drinks distilled).

Economic condition

In determining the economic condition of families, the "Brazilian Economic Classification Criteria" established in 2011 by the Brazilian Association of Business and Research (ABEP) will be used, according to a database from a survey carried out in 2009. by the Brazilian Institute of Public Opinion and Statistics (ABEP, 2009).

Coronavirus

As the coronavirus may exert or have exerted influences on some of the variables investigated in this study (for example: mental health, cardiac autonomic modulation), participants will be asked: Have you been diagnosed with Covid-19? If so, how did your clinical condition evolve? Asymptomatic, mild symptoms, moderate symptoms (I needed medication), severe symptoms (I needed hospitalization), very serious symptoms (I needed intensive therapy).