AbstractWe aimed to examine speed of movement and its interactive association with
fatness to changes in cardiometabolic risk factors over one year in
children. The analysis included 8345 children aged 6–13 years.
Cardiometabolic risk score was computed by summing Z-scores of waist
circumference, the average of systolic and diastolic blood pressure, fasting
glucose, high-density lipoprotein cholesterol (multiplied by −1),
and triglycerides. Both high baseline and improvement in speed of movement
were associated with favourable changes in percent body fat, lipids, and
cardiometabolic risk score. Percentages of the association between baseline
speed of movement and changes in cardiometabolic risk score, triglycerides,
and high-density lipoprotein cholesterol explained by baseline BMI were
24.6% (19.6–29.1%), 26.2%
(19.7–31.1%), and 12.5% (9.6–15.4%),
respectively. The corresponding number for percent body fat was
47.0% (40.4–54.1%), 43.3%
(36.7–51.7%), and 29.8%
(25.0–34.6%), respectively. Speed of movement mediated the
association between fatness and cardiometabolic risk factors. Improved speed
of movement was associated with a lower increase in blood pressure in obese
children only. Speed of movement is a strong predictor of changes in
cardiometabolic risk factors. Fatness and speed of movement are
interactively associated with cardiometabolic risk factors. Speed of
movement may attenuate the positive association between fatness and blood
pressure.