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Randomized Controlled Trial
. 2014 Mar:60:41-7.
doi: 10.1016/j.ypmed.2013.12.010. Epub 2013 Dec 15.

Weight gain prevention in the school worksite setting: results of a multi-level cluster randomized trial

Stephenie C Lemon  1 , Monica L Wang  2 , Nicole M Wedick  3 , Barbara Estabrook  4 , Susan Druker  5 , Kristin L Schneider  6 , Wenjun Li  7 , Lori Pbert  8
Affiliations
Randomized Controlled Trial

Weight gain prevention in the school worksite setting: results of a multi-level cluster randomized trial

Stephenie C Lemon et al. Prev Med. 2014 Mar.

Abstract

Objective: To describe the effectiveness, reach and implementation of a weight gain prevention intervention among public school employees.

Method: A multi-level intervention was tested in a cluster randomized trial among 782 employees in 12 central Massachusetts public high schools from 2009 to 2012. The intervention targeted the nutrition and physical activity environment and policies, the social environment and individual knowledge, attitudes and skills. The intervention was compared to a materials only condition. The primary outcome measures were change in weight and body mass index (BMI) at 24-month follow-up. Implementation of physical environment, policy and social environment strategies at the school and interpersonal levels, and intervention participation at the individual level were assessed.

Results: At 24-month follow-up, there was a net change (difference of the difference) of -3.03 pounds (p=.04) and of -.48 BMI units (p=.05) between intervention and comparison conditions. The majority of intervention strategies were successfully implemented by all intervention schools, although establishing formal policies was challenging. Employee participation in programs targeting the physical and social environment was maintained over time.

Conclusion: This study supports that a multi-level intervention integrated within the organizational culture can be successfully implemented and prevent weight gain in public high school employees.

Keywords: Ecological model; Environmental interventions; Obesity prevention; Program evaluation; Worksite health promotion.

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Figures

Figure 1
Figure 1
CONSORT diagram of the multi-level weight gain prevention intervention trial conducted among public school employees in central Massachusetts, 2010-2012.
Figure 2
Figure 2
Estimates of mean weight change by study condition in a multi-level weight gain prevention intervention trial conducted among public school employees in central Massachusetts, 2010-2012.
See this image and copyright information in PMC

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