A two-year study design is formulated. The overall aim of this study is to examine the effectiveness of the care model combing smartphone application on improve obstructive apnea in obesity adults.

This study was the second year.The purpose of this study is to evaluate the effectiveness of the lifestyle modification intervention for overweight employees with obstructive sleep apnea. A randomized control trial with single blind will be used. Stratified with proportional randomized sampling will be employed and 160 suitable participants will be recruited from 4 electronics industries in northern of Taiwan. The subjects will be randomly divided into three groups. The total duration of intervention program is 6 months. Only the intervention group received the Combining Smartphone Application with lifestyle modification Intervention. The home portable sleep monitor will be used to collect the change of AHI at baseline, 3, and 6 months after intervention.

Inclusion Criteria: a) >21 years old; b) )BMI greater than24 kg/m2; (c) the absence of any mental disorder, alcohol and drug addiction, and serious disease, such as cancer or cardiorespiratory failure; and d) Screening for OSA , AHI>5 and voluntary participation.

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Exclusion Criteria:

• a) diagnosis of OSA and currently under treatment and；b) diagnosis of severe depression (c) have cardiopulmonary diseases and are not suitable for activities; and d) plan to become pregnant during or within 6 months

The research assistant who assisted in the production of serial numbers was not involved in recruitment, intervention, or data collection. In addition, the researcher who performed the data analysis did not participate in recruitment, intervention or data collection.