Table 2. Description of the instruments used to measure physical activity and sedentary behavior (n=13).
| Assessment instrument and description of its use |
|---|
| Accelerometers |
| Aguilar-Farías et al.: 18 ActivPAL micro: four full days (weekdays and weekend). The study evaluated periods of at least 5 or 10 minutes of PA. Estimates of PA and SB for an average day were retrieved from previous studies: mean steps per day=(5 steps per weekday+2 steps per day of the weekend)/7. |
| Barbosa et al.: 19 Actigraph GT3X: five consecutive school days. The 75th percentile for PA and SB were adopted as cut-off points. The average number of minutes per day considered valid for the use of accelerometers was at least 360 minutes for children aged 4 to 5 years and 120 minutes for children aged 6 years. Two cut-off points were adopted to classify physical activity and sedentary behavior a,b. |
| Bielemann et al.: 20 Actigraph GT1M: full days. The participants were instructed to report on a diary when they did not wear the device for more than an hour. The epoch was adjusted for five seconds, and the accelerometers were delivered in the households on Saturdays and collected on Wednesdays. |
| Cano Cappelacci et al.: 21 Actigraph GT3X: the measurements occurred in two weekdays (time: 6 continuous hours). |
| Godard et al.: 23 Actiwatch AW64: Sufficient MVPA: number of minutes per day with cpm>900, according to the classification of Puyau et al.c For nighttime PA, all records showing activity (cpm>25) were selected for more than 60 minutes. |
| Lima et al.: 24 d Actigraph GT1M: seven full days (weekdays and weekend). The accelerometer monitoring used epochs of 15 seconds. The cut-off points adopted to set the intensity of the activities performed followed a prior referencee. Non-monitoring was determined after 30 consecutive minutes without any count record. |
| Vásquez and Salazar 28 and Vásquez. 29 f Tritrac R3D: three consecutive days (weekdays and weekend). |
| Questionnaires |
| Barros et al.: 30 adapted version of the questionnaire from the Childhood Obesity Study in Florianópolis. |
| Cremm et al.: 22 Children and youth physical activity questionnaire: adapted for the Brazilian population, taking into account the number of daily hours that the child spends on screen behavior, the type of transport the child uses to go to school, and sports practiced. |
| López et al.: 25 QDS: parents reported the amount of PA practiced in a week. |
| Melo et al. 26 d: QDS: question directed to parents: on a weekday (Monday to Friday), how much time does your child spend playing outdoors, in the garden, the yard, or on the streets near home? |
| Roda et al.: 27 QDS: open question directed to parents about the number of hours that their children spend on screen activities. Also, PA was classified as “unstructured”/moderate or “structured”/vigorous. |
aSirard et al. J Phys Act Health. 2005; 2:345-357; bVan Cauwenberghe et al. Int J Pediatr Obes. 2011; 6:582-589; cPuyau et al. Obes Res. 2002; 10:150-157; dBelong to the study ELOS-Pré; ePate et al. Med Sci Sports Exerc 2010; 42(3):508-512; fbelong to the same study; PA: physical activity; SB: sedentary behavior; MVPA: moderate and vigorous physical activity; cpm: counts per minute; QDS: questionnaire developed for the study.