716 subjects were able to actually participate in the study.
The instruments in the study included a questionnaire utilizing demographic and background information used in old surveys. The questions included inquiries into performance history, and weight loss methods, dietary practices and supplements, as well as questions regarding binge eating and bulimic behavior. Though self-evaluation questionnaires regarding the prevalence of severe eating disorders, including bulimia has rarely been utilized; however a study concerning alcohol use helped to support that in fact self reporting questionnaires are a valid method.
The research utilized factor analysis to determine the convergent validity of the binge scale. 71% of the variance was explained by items representing concerns and guilt about binge eating, and 16% was related to feelings of satiety and the duration of binge eating. Test- retest reliability of the binge scale was .88 and internal consistency was .68. The researcher correlated coefficients for inter-item reliability that ranged from .72 to .84 for purging behavior.
Data analysis utilized chi-square analysis and mean comparison between bulimic and non-bulimic wrestlers. A multiple linear regression was used for mean comparison to overcome the small group size. The binge scores were categorized into high (equal to or more than 10), moderate (6 to 90, and mild (1 to 5). A multiple linear regression analysis was conducted to determine the best predictors of the severity of binge eating. The mean age of the participants was 16, the mean height was 168.5 cm, the mean weight 63.9 kgs, and most participants began wrestling in the seventh grade. The average amount of weight lost to qualify on average was 4.0kg with a standard deviation of 3.7, while the average amount of weight that was gained and lost weekly was 2.3 kg with a standard deviation of 1.7. The amount of weight gained postseason for 425 of the participants on average was 5.6 kg with a standard deviation of 3.4.Results indicated that 55% of the wrestlers lost more...
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