Korean J Obes 2011; 20(4): 193-201
Published online December 1, 2011
Copyright © Korean Society for the Study of Obesity.
Ji Yeon Kang(1), Ill Keun Park(1), Yun Kyun Chang(1), Sook Hee Sung(1), Yoo Kyoung Park(2)(3), Sang Woon Cho(2), Yun Mi Paek(1)*, Tae In Choi(1)
Radiation Health Research Institute, Korea Hydro & Nuclear Power Co., Ltd.(1), Department of Medical Nutrition, Kyung Hee University(2), Research Institute of Clinical Nutrition, Kyung Hee University(3)
Background: This study was performed to develop, evaluate, and implement an effective obesity intervention program using the DMAIC (Define, Measure, Analyze, Improve, Control) methodology.
Methods: A workplace obesity intervention program involving 100 obese male workers (% body fat ≥ 25% and BMI ≥ 25 kg/m2) was conducted five times (20~30 minutes each time) for 12 weeks. The intervention involved a face-to-face counseling.
Results: The selected critical to quality (CTQ) according to the Define phase was % body fat. The subjects’ mean % body fat, measured during Measure phase, was 27.8% and the sigma level was 0.54σ. According to the analyse phase, the total energy intake (r = 0.417; P < 0.001) and frequency
of exercise (r = -0.317; P < 0.01) were considered as potential factors influencing % body fat. Therefore, these factors were implemented in the intervention protocol. By performing six sigma methodologies, % body fat was significantly decreased from 27.8% to 26.2%, and the sigma
level was improved from 0.54σ to 1.27σ.
Conclusions: The six sigma methodology was well suited for implementing a more efficient and cost-effective intervention, for enhancing the quality of the intervention, and for facilitating the successful adoption of the process and protocol into practice.
Keywords: Obesity, Six sigma, Workplace, Intervention, Cost-effective