Reduction in blood pressure , lipids and blood glucose was not statistically significant .
Conclusions Workplace interventions  significantly reduced body weight , BMI and waist circumference .
Non-significant results for biochemical markers could be due to them being secondary outcomes in most studies .
Background Adults in urban areas spend almost 77 % of their waking time being inactive at workplaces , which leaves little time for physical activity .
The aim of this systematic review and meta- analysis was to synthesize evidence for the effect of workplace physical activity interventions on the cardio-metabolic health markers ( body weight , waist circumference , body mass index ( BMI ) , blood pressure , lipids and blood glucose ) among working adults .
The Results of a 2-Year Randomized Trial of a Worksite Weight Management Intervention
Purpose . We assessed the effectiveness of a worksite management intervention ( the 3W program ) for overweight and obese hotel employees . Design . The program was tested in a 2-year cluster-r and omized trial involving 30 hotels that employed nearly 12,000 individuals . Setting . All participating hotels were on Oahu , Hawaii . The intervention was implemented within hotel worksites . Subjects . Participants were included in the analysis if they had an initial body mass index ( BMI ) ≥ 25 , were assessed at least twice , were not missing other data needed for the analysis , and did not switch to employment at a hotel in a different experimental condition . Of the 6519 employees we assessed , data from 1207 individuals ( intervention : 598 ; control : 610 ) met these criteria and contributed to the analysis . Intervention . The intervention had two components : ( 1 ) group meetings and ( 2 ) a workplace environment intervention .  Measures . Weight and waist to height ratio ( WHtR ) were measured at three annual assessment s. Analysis . The effect of the intervention on change in BMI and WHtR was estimated in hierarchical mixed regression models using full maximum likelihood to estimate model parameters . Results . The effects on change in BMI and WHtR were in the expected direction but were not statistically significant . Conclusion . The 3W program was not effective . The low intensity of the intervention may have contributed to its ineffectiveness
Reduction in blood pressure , lipids and blood glucose was not statistically significant .
Conclusions Workplace interventions  significantly reduced body weight , BMI and waist circumference .
Non-significant results for biochemical markers could be due to them being secondary outcomes in most studies .
Background Adults in urban areas spend almost 77 % of their waking time being inactive at workplaces , which leaves little time for physical activity .
The aim of this systematic review and meta- analysis was to synthesize evidence for the effect of workplace physical activity interventions on the cardio-metabolic health markers ( body weight , waist circumference , body mass index ( BMI ) , blood pressure , lipids and blood glucose ) among working adults .