Absolute and relative differences in objectively measured physical activity, sedentary behaviour and sleeping time in children from a low-income town in Chile.
ISPAH ePoster Library. Aguilar-Farias N. Oct 15, 2018; 225556
Dr. Nicolas Aguilar-Farias
Dr. Nicolas Aguilar-Farias
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Abstract Introduction:<\b>
Physical activity (PA), sedentary behaviour (SB) and sleeping time (ST) are variable, but little is known about them in Latin-American children. The aim was to describe these behaviours across days in Chilean children from a low-income town. Methods:<\b>
256 children were recruited and wore an ActiGraph GT3X+ during 7 consecutive days. Absolute and relative (based on wearing time) differences were assessed for PA, SB and ST. Results:<\b>
150 children (47.3% male, 10.2±0.96 years) provided valid data. Median time spent in MVPA was 40.4 [28.3-58.3] min/day with boys being more active than girls (49.9 vs 33.6 min/day; p<0.001). Participants were more active during week than weekend days (42.5 vs 28.0 min/day; p>0.001). When comparing percentages of MVPA per day, boys showed no differences between week and weekend days (7.5% vs 6.4%; p=0.15). MVPA was more variable on weekend days (79.5% vs 67.1%; p=0.03). Overall, the participants spent 331.4 (95% CI 316.3-346.6) min/day in SB with no gender differences. However, when using relative estimates, girls were more sedentary than boys on average (48.0% vs 44.8%; p=0.03) and weekends (48.8% vs 43.4%; p=0.01). Children slept 552.5 [511.6-608.0] min/night. The participants slept 21.3 more minutes/night during weekend (p=0.02). ST on an any day was more variable in girls than boys (16.5% vs 13.8%, p=0.036), and more variable on week than weekend days (15.0% vs 12.9%, p=0.036). Conclusion:<\b>
Some differences were found for the same behaviour when using absolute or relative estimates. Therefore, when analyzing data is important to consider this aspect. External funding details FONDECYT(11160720) - UNETE(14-0008)
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