Skip to main content

Table 3 Associations of time spent in MVPA and ST with WHO BMI-SD and BMI categories (IOTF): main effect models

From: Associations of accelerometer measured school- and non-school based physical activity and sedentary time with body mass index: IPEN Adolescent study

MVPA / ST variables

WHO BMI-SD

BMI categories (IOTF) (thin/normal vs. overweight/obese)

b (95% CIs)

p-value

OR (95% CIs)

p-value

Model 1: total MVPA/ST

  Total MVPA (min/day)

-0.004 (-0.006, -0.002)

 < .001

0.989 (0.985, 0.994)

 < .001

  Total ST (min/day)

-0.001 (-0.002 -0.0006)

 < .001

0.997 (0.995, 0.998)

 < .001

Model 2: School and non-school MVPA/ST

  School MVPA (min/day)

-0.004 (-0.009, 0.001)

.120

0.990 (0.980, 1.000)

.062

  School ST (min/day)

-0.002 (-.003, -0.0003)

.016

0.996 (0.993, 0.999)

.004

  Non-School MVPA (min/day)

-0.003 (-0.006, -0.001)

.017

0.991 (0.985, 0.997)

.003

  Non-School ST (min/day)

-0.0008 (-.0021, 0.0003)

.131

0.999 (0.996, 1.000)

.093

  1. Abbreviations: MVPA Moderate-to-vigorous physical activity, ST Sedentary time, IOTF International Obesity Task Force, BMI Body Mass Index, WHO World Health Organization, OR Odds ratio, CI Confidence interval. Estimates from generalized additive mixed models with random intercepts at the administrative-unit and school levels (pooled estimates from 10 imputed datasets). Models were adjusted for adolescent sex, age, city, area-level walkability and SES, valid days of accelerometer wear, average wear time per day and accelerometer comparability