Variety and Frequency of YPAQ activities and physical activity characteristics of boys and girls measured at baseline and follow-up.

<p>Data are presented as mean ± standard deviation.</p><p>Differences between girls and boys (p-value for sex differences) and differences between baseline and follow-up measurements (p-value for wave differences) were determined using multilevel linear regression.</p><p>*P-value for wave x sex interaction.</p><p>YPAQ, youth physical activity questionnaire; TPA, total physical activity; cpm, counts per minute; MVPA, moderate-to-vigorous intensity physical activity.</p

Baseline personal, anthropometric and demographic characteristics of children from the SPEEDY study whose data were used in these analyses.

<p>Data are presented as mean ± standard deviation for continuous variables and n (%) for categorical variables.</p><p>Ref is the reference category.</p><p>Differences between Girls and Boys (p-value presented) were determined using multilevel linear or logistic regression depending on whether the dependent variable was continuous or categorical.</p><p>SPEEDY, Sports, Physical activity and Eating behaviour: Environmental Determinants in Young people; BMI, body mass index; GCSE, General certificate of secondary education.</p><p>*At follow-up one boy and one girl were missing data for weight therefore weight, BMI and weight status at follow-up are out of 317 children (145 boys, 172 girls)</p

Associations of change in objectively measured MVPA and change in TPA between baseline and follow-up with self-reported Variety and Frequency measured at baseline and change in self-reported Variety and Frequency between baseline and follow-up.

<p>Presented models were adjusted for school, age, sex, parent/guardian education level, age standardised body mass index, and baseline TPA.</p><p>Variety (number of activities per week) and Frequency (number of activity sessions per week) variables were transformed to z-scores for analyses; therefore effect sizes are directly comparable.</p><p>Associations were tested using multilevel linear regression.</p><p>P–value for significance of the association of baseline Variety, baseline Frequency, change in Variety or change in Frequency with change MVPA or change TPA.</p><p>MVPA, moderate-to-vigorous intensity physical activity; TPA, total physical activity; β Coef., β Coefficient; 95% CI, 95% confidence interval.</p

Changes in children's participation in specific activities reported in the Youth Physical Activity Questionnaire.

<p>Number of children who ever reported participating in each Youth Physical Activity Questionnaire (YPAQ) activity (top panel) and the proportion of children who dropped out of, continued or took up each YPAQ activity between baseline and follow-up measurements, (percentage of those who ever reported participating in it) (bottom panel). *reported to be participated in during the 7 days before the questionnaire was completed at either time point.</p

Characteristics of EPIC-Norfolk participants included in this analysis by levels of estimated 10-year absolute cardiovascular risk, the Framingham risk score (FRS), at the baseline health examination (n = 12,197).

Characteristics of EPIC-Norfolk participants included in this analysis by levels of estimated 10-year absolute cardiovascular risk, the Framingham risk score (FRS), at the baseline health examination (n = 12,197).</p

Cardiovascular disease risk classification comparing the Framingham risk score at baseline with the Framingham risk score at the second health examination in the EPIC-Norfolk cohort (n = 12,197).

Cardiovascular disease risk classification comparing the Framingham risk score at baseline with the Framingham risk score at the second health examination in the EPIC-Norfolk cohort (n = 12,197).</p

Final multivariable models for association of family and home-environmental determinants with change in sedentary time.

<p>Sex-specific associations obtained from full model.</p>a<p>β Coefficient (95% CI) for association in girls −0.66 (−1.80, 0.49).</p>b<p>β Coefficient (95% CI) for association in girls 0.49 (−0.64, 1.62).</p>c<p>β Coefficient (95% CI) for association in girls 0.51 (−0.64, 1.66).</p>d<p>β Coefficient (95% CI) for association in girls 0.91 (0.08, 1.74)*.</p><p>95% CI, 95% confidence interval.</p>*<p><i>P</i><0.05;</p>**<p><i>P</i><0.01;</p>***<p><i>P</i><0.001.</p

Associations for change in the proportion of time spent sedentary with family and home-environmental determinants.

<p>Variables in <b>bold</b> carried forward to the multi-variable model.</p><p>95% CI, 95% confidence interval.</p>†<p><i>P</i><0.1;</p>*<p><i>P</i><0.05;</p>**<p><i>P</i><0.01;</p>***<p><i>P</i><0.001; ‡interaction with sex (<i>P</i><0.1).</p><p>Numbers for the after-school (<i>N</i> = 806–854) and weekend (<i>N</i> = 678–718) analyses varied due to missing data for individual determinants.</p

Pictorial diagram of timeframe and information used for investigating the prediction of CVD events in this analysis.

<p>x = censored due to diagnosis of cardiovascular disease: • = censored due to death from diseases other than cardiovascular disease.</p

One-year change in accelerometer-assessed sedentary time after school and at the weekend.

a<p>Estimates of change in sedentary time calculated as proportion of period spent sedentary multiplied by outcome-specific mean wear time (After school mean wear time = 319.9 min; Weekend mean wear time = 689.9 min).</p