Our office will remain closed through Friday, September 18th as we continue to assess the damages caused by Hurricane Sally. ActiGraph team members are working remotely, however shipping delays should be expected at this time. We expect to resume regular business hours on Monday, September 21st. If you need immediate assistance, please contact us by email at firstname.lastname@example.org and we will respond as quickly as possible. Thank you for your continued support.
Longitudinal Follow-Up of Physical Activity During School Recess: Impact of Playground Markings
- Presented on 23 October 2012
Background To promote physical activity (PA) among children, few studies have reported long-term effects of playground markings during school recess. 
Aim The aim of this study was to investigate the impact of a playground design on children’s recess PA across 18 months and to evaluate the influence of covariates on the intervention effects.
Methods Three hundred and one children (aged 6-11 years) were selected from 3 elementary schools located in high- socioeconomic status (high-SES) and low-socioeconomic status (low-SES) areas. In each area, one experimental school (high-SES_Exp and low-SES_Exp) received a recess-based intervention; the third one (low-SES_Con) served as a control group. The design of playgrounds was based on a multicolored zonal design. Children’s PA was measured with an uniaxial accelerometer twice a day (morning and afternoon recess) during a 4-day school week. Times spent below and above different PA levels, varying from light PA (LPA, <3 METs), moderate PA (MPA<6METs, vigorous PA (VPA>6METs) to very high PA (VHPA, >9METs), were calculated before and after 6, 12 and 18 month intervention. A three level (time, pupil, school) multilevel analysis was used to control the intervention effect across time on MPA, VPA and VHPA .
Results Table 1 showed the effects of the multicolored design on both MPA, VPA and VHPA. Any positive significant intervention effect was found for MPA and VPA. Moreover, low-SES_Con spent more time in VHPA than the two experimental groups. Children from low-SES areas spent more time in VPA and VHPA while high-SES children spent more time in MPA.
Conclusions Playground markings intervention had any long-term effects on children’s school recess PA.
References  Ridgers N.D.; Fairclough S.J.; Stratton G. J Phys Act Health., 2010, 7(2), 167.  Twisk J.W.R. Applied Multilevel Analysis. Cambridge University Press; 2006.