Genetic and environmental influences on fidgetiness, enjoyment of activity and child reported activity preferences in 9–12 year old twins.

Standard ACE model-fitting analyses were used to estimate additive genetic (a2), shared environment (c2), non-shared environment effects (e2).†indicates the most parsimonious model; Fidgetiness score, parent rated based on the scale by Taylor et al. (1984); Child's enjoyment of low, medium and high impact activity reported by parent; Activity preference calculated as mean of 48 activity choice (active vs sedentary activity) reported by child MVPA moderate and vigorous physical activity mean accelerometer counts/min >2000; sedentary behaviour mean accelerometer counts/minute