ABSTRACT
BACKGROUND: The objective of study was to investigate secular trends for body-shape perception, weight-loss efforts, and weight-loss behaviors from 2001 to 2014 in Korean adults and factors related to those weight-related attitude. METHODS: Self-reported body-shape perception, weight-loss efforts, and weight-loss behaviors were used in 26,480 men and 35,051 women aged 19 or older using the Korean National Health and Nutrition Survey from 2001 to 2014 (from 2005 to 2014 for weight-loss behaviors). Multivariable logistic regression analysis was conducted using complex sampling design in each sex. RESULTS: Body-shape misperception tended to decrease from 2001 to 2014 and weight-loss efforts tended to increase over the period in all subjects, whereas unhealthy weight-loss behaviors tended to increase over the period in women. In multivariable logistic regression model, body-shape misperception in men was inversely associated with survey year, while positively associated with age and weight status. In women, body-shape misperception was inversely associated with survey year, education, and income, while positively associated with age and weight status. Weight-loss efforts in both sexes were inversely associated with age, while positively associated with survey year, education, income, and weight status. Healthy weight-loss behaviors were positively associated with education but inversely associated with age in men. In women, those behaviors were positively associated with education and weight status, while inversely associated with survey year. CONCLUSIONS: We found decreased body-shape misperception and increased weight-loss efforts in Korean men and women from 2001 to 2014, and decreased healthy weight-loss behaviors in women from 2005 to 2014.
Subject(s)
Adult , Female , Humans , Male , Education , Korea , Logistic Models , Nutrition SurveysABSTRACT
We examined the relationships between exercise, eating disorders, weight loss-related concerns/behaviors and weight-cycling (weight loss and regain ≥10%) . The subjects were comprised of 1123 female college students (aged 18.9 ± 1.1 yrs.) who each completed a questionnaire on eating attitudes [Eating Attitude Test (EAT) ], dieting behavior [Dieting Behavior Scale (DBS) ], purging behavior (self-induced vomiting and use of laxatives) and previous weight-cycling. Subjects were divided into four groups on the basis of their current regular exercise behavior as follows non-exercisers (Ns) (N=704), low-intensity, low-frequency exercisers (LLs) (N=106), moderate/high-intensity, low-frequency exercisers (MLs) (N=184) and moderate/high-intensity, high-frequency exercisers (MHs) (N=129) .<BR>Analyses of variances showed significant differences among the four groups for weight and eating concerns, and weight loss behavior. Not only MHs, but also MLs exhibited higher Dieting subscale score ratings on the EAT than Ns. MHs and MLs also showed higher Structured- and Extraordinary-Diet subscale score ratings on the DBS than Ns and LLs. Significantly more MHs used self-induced vomiting than the other three groups, whereas significantly more MHs and MLs used laxatives than Ns. MHs who had experienced weight-cycling were by far more likely to have unhealthy weight loss behaviors and eating disorders than Ns.<BR>These findings suggest that vigorous exercise in female college students is associated with eating disorder- and weight loss-related concerns/behavior even though the students do not exhibit frequent exercise habits. Though regular exercise is desirable, careful attention must be paid to behavioral factors related to eating and weight loss in exercising female college students.