Publications by authors named "Alexsandra S Bandeira"
Drivers of summer body mass index (BMI) gain in children remain unclear. The Circadian and Circannual Rhythm Model (CCRM) posits summer BMI gain is biologically driven, while the Structured Days Hypothesis (SDH) proposes it is driven by reduced structure. Identify the mechanisms driving children's seasonal BMI gain through the CCRM and SDH.
View Article and Find Full Text PDFPurpose: To investigate the independent and joint associations of cardiorespiratory fitness and body mass index (BMI) with five dimensions of Health-Related Quality of Life (HRQoL) in a cross-sectional sample of Brazilian adolescents.
Methods: 619 Brazilian schoolchildren answered a survey, BMI categories (healthy weight and overweight/obesity) were assessed by their weight and height, and they participated in a 20-m shuttle run test. HRQoL was measured using the KIDSCREEN-27 across five dimensions: Physical Well-Being, Psychological Well-Being, Autonomy and Parent Relation, Peers and Social Support, and School Environment.
This study analyzed the validity and reliability of an instrument with scales measuring factors associated with screen time in adolescents. Two cross-sectional studies included students for analyses of validity and internal consistency (n=1138, 51.5% boys) and test-retest reproducibility (n=194, 56.
View Article and Find Full Text PDFArticle Synopsis
- Sedentary behavior (SB) among adolescents in school is linked to unhealthy outcomes, with this study exploring factors influencing SB in this setting.
- Adolescents (N=567, average age 12.9) reported spending significant time in SB during classes (67%), PE (41%), and recesses (41%), with girls engaging in more SB overall.
- Factors such as body fat, peer support, and attitudes towards physical activity influenced the amount of SB, highlighting the need for strategies to promote activity even during designated active time.