The effect of urban greenspace on adolescent sleep patterns

We investigated the effects of long-term greenspace deprivation on sleep during adolescence. Using data from a UK birth cohort, we studied deviations from age-recommended sleep duration through Time Use Diaries. Our sample ( N ¼ 1370; 53% female) of urban adolescents had been exposed to the same levels of neighbourhood greenspace from birth up to age 14 years when their time use was tracked. We factored in sex and ethnicity, family income, long-term illness, sharing of a bedroom, access to a garden, as well as air pollution and perceived area safety. Even after full adjustment, there was a significant interaction between greenspace availability and income when predicting sleep duration, such that low-income adolescents living in the greyest urban areas were found to sleep more than the 8 – 10h recommended for their age group, while the inverse was true for their counterparts living in areas with more greenspace.