Abstract
Background: Obesity is associated with various health problems. Low-grade inflammation is a condition found in obese people and contributes to the development of various diseases. The objective of this study was to compare the effects of calorie restriction diet with high-protein (HP) or standard protein (SP) to inflammation marker (hs-CRP) in obese individuals with weight cycling. Methods: 61 healthy obese men and women (25 – 49 years old) with a history of weight cycling were recruited and were randomly assigned to one of the intervention groups, HP or SP groups. Both groups were suggested to reduce their daily caloric intake by 1000 kcal with regular physical activity for 56 days. Subjects in HP group were given a daily protein intake of 22-30% from total daily caloric intake, while SP group were prescribed 12-20%. Dietary consultation was conducted through daily reminder by phone and weekly counseling. The measurement of hs-CRP level was performed prior to and at the end of the intervention. Results: 54 subjects completed the program, yet due to several reasons only 32 of them were measured for hsCRP before and after completing the program, 15 from HP group and 17 from SP group. After completing the 56-day diet program, SP group experienced reduction of hs-CRP by -0.446 + 4.239, while HP underwent increase by 0.135 + 2.389. The mean difference of change in hs-CRP level between the two groups were not statistically significant (P=0.094). Conclusion: Low calorie diet with either HP or SP for 8 weeks significantly reduced body weight (P<0.001) and BMI (P<0.001) in healthy obese subjects but the difference of change in the hs-CRP level between them were not significant. The protein composition of a low calorie diet may not affect the inflammatory state of obese individuals with weight cycling. Trial registration number: NCT03374150
Highlights
The global prevalence of obesity according to the World Health Organization (WHO) in 1980 was 5% in the male population and 8% in the female population
The aim of this study is to evaluate the effects of a low calorie high protein diet compared to a standard protein diet on the level of hs-C-reactive protein (CRP)
There were 54 participants completed the 56-days of diet program but only 15 subjects from standard protein (SP) group and 17 subjects from HP group who completed the treatment and had their hsCRP been measured were analyzed for the primary outcome to the group they were initally assigned
Summary
The global prevalence of obesity according to the World Health Organization (WHO) in 1980 was 5% in the male population and 8% in the female population. Methods: 61 healthy obese men and women (25 – 49 years old) with a history of weight cycling were recruited and were randomly assigned to one of the intervention groups, HP or SP groups. Both groups were suggested to reduce their daily caloric intake by 1000 kcal with regular physical activity for 56 days. Conclusion: Low calorie diet with either HP or SP for 8 weeks significantly reduced body weight (P
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