Physical activity and fat mass gain in Mexican school-age children: a cohort study

BMC Pediatrics

Table 2 Lagged models ¹ of FM gain by baseline MVPA category or time engaged in MVPA

	ΔFM (kg) N = 196 (Boys = 84, Girls = 112)
	β	95%CI
Model 1. Baseline MVPA category (medium/low MVPA as reference)
Girls ²	−0.92	−1.34, -0.49*
Boys	−0.05	−0.86, 0.75
Model 2. Time engaged in baseline MVPA (10 min/d)
Girls ³	−0.12	−0.21, -0.04*
Boys	0.03	−0.01, 0.01

Abbreviations: MVPA = moderate-vigorous physical activity, ΔFM = fat mass gain, β = regression coefficient, CI = confidence interval.
¹ Adjusted by initial fat mass, energy intake and height, age, gender, socioeconomic status and changes in energy intake and height. Grouping variable: School affiliation during the first survey. R2 for model = 0.19.
² P value of baseline MVPA category x gender interaction: 0.046.
³ P value of the time engaged in baseline MVPA x gender interaction: 0.09.
*P value < 0.05

ISSN: 1471-2431