Background
This study aimed to identify and examine the effects of weight control behaviors correlated with weight loss in obese individuals who attempted to lose weight within the past year.
Methods
In this cross-sectional study, data from 9,461 obese individuals were collected from the fifth and sixth Korean National Health and Nutrition Examination Survey (2010–2014). Three of nine verified methods of weight control suggested in the survey were selected: diet therapy (reduced food intake), exercise therapy (exercise), and medication therapy (prescribed weight loss medications). Participants were divided into one of seven groups (diet therapy alone; exercise therapy alone; drug therapy alone; combined diet and exercise therapy; combined exercise and drug therapy; combined diet and drug therapy; or combined diet, exercise, and drug therapy). Logistic regression analysis was used to determine whether the group that tried to lose weight in the past year had indeed lost weight compared to the group that did not.
Results
The odds ratios for weight loss (≥3 but <6 kg vs. ≥6 but <10 kg) for the combined therapies were 2.05 (95% confidence interval, 1.23–3.41) for combined diet and exercise therapy and 5.43 (1.74–16.92) for combined diet, exercise, and drug therapy.
Conclusion
All levels of weight loss were significantly associated with combined diet and exercise therapy. Weight loss ≥6 kg but <10 kg was significantly associated with combined diet and exercise therapy as well as with combined diet, exercise, and medication therapy among individuals who tried to lose weight in the past year.

Citations

• Glucagon-like peptide 1 receptor (GLP-1R) agonist relieved asthmatic airway inflammation via suppression of NLRP3 inflammasome activation in obese asthma mice model
  Jung Hur, Ji Young Kang, Young Kyoon Kim, Sook Young Lee, Hwa Young Lee
  Pulmonary Pharmacology & Therapeutics.2021; 67: 102003.     CrossRef
• Pravastatin alleviates allergic airway inflammation in obesity-related asthma mouse model
  Hwa Young Lee, Eung Gu Lee, Jung Hur, Chin Kook Rhee, Young Kyoon Kim, Sook Young Lee, Ji Young Kang
  Experimental Lung Research.2019; 45(9-10): 275.     CrossRef

Background
: A reasonable weight reduction method is to reduce fat-body mass while preserving fat-free mass. Recently, many people in Korea have been trying reckless diet therapy for weight reduction by means of low calory and protein diets, which gave rise to many side effects consequently. For reasonable weight reduction, this study was undertaken to investigate the significant dietary factors that change body composition during short-term low calory diet.

Methods : Twenty six healthy obese women aged 23∼37 years, whose BMI was greater than 24, volunteered for the 6 week diet therapy from January to April in 2003. All subjects were instructed to eat approximately 1,200 kcal/day and keep a dietary diary. In the beginning the 3rd week and the 6th week of the study, subjects' body weight were measured and fat body weight were measured by BIA. In the 6th week, the analysis of the dietary diary was conducted.

Results : There was a significant positive correlation between the protein intake per ideal body weight in the first 3 weeks and the fat-free mass increase in the latter 3 weeks (P＜0.05). At the same time, the fat intake in the first 3 weeks had positive correlation with the fat-free mass in the latter 3 weeks, also (P＜0.05). But, we could not find any significant values that had effect on the fat-free mass increase in multiple regression analysis.

Conclusion : The protein intake in the first 3 weeks helped to preserve the fat-free mass in the latter 3 weeks, and had positive effects.