Systematic exposure to recreation centers increases use by Latino families with young children.

Background: Living near community recreation centers (CRC) is associated with increases in adolescent and adult physical activity, but the efficacy of efforts to increase use among Latino parents and young children is unknown. We hypothesized that Latino parent-child dyads with exposure to a CRC through culturally tailored programming would be more likely to use the facility for physical activity a year after programming ended than dyads living in the same geographic area who were not exposed to the programming.

Methods: Self-identified Latino parent-child dyads who had participated in a randomized controlled trial (RCT) of a culturally tailored healthy lifestyle program and completed a 12-month follow-up assessment constituted the "exposed" group (n = 66).

Phase correlation of laser waves with arbitrary frequency spacing.

The theoretically predicted correlation of laser phase fluctuations in Lambda-type interaction schemes is experimentally demonstrated. We show that the mechanism of correlation in a Lambda scheme is restricted to high-frequency noise components, whereas in a double-Lambda scheme, due to the laser phase locking in a closed-loop interaction, it extends to all noise frequencies. In this case the correlation is weakly sensitive to coherence losses.