Abstract:

BACKGROUND: Underwater weighing method is a gold standard to measure body fat rate. However, the complex instrument and tedious technique limit the application in large-sample measurement. Therefore, it is necessary to search a simple and indirect method to measure body fat rate.
OBJECTIVE: To establish a speculative equation of fat rate among male college students in Guangxi Zhuang autonomous region based on some physical capacity parameters.
METHODS: A total of 200 students were included and divided into equation group (n=160) from Qinzhou College and testing group (n=40) from other colleges. They were male, and Zhuang nationality. The stepwise regression analysis was performed with the body fat weighed underwater as the dependent variable and partial body indexes as the independent variables to establish the speculative equation of fat rate. The corresponding indexes of subjects in the testing group were used into the newly established equation to verify its credibility.
RESULTS AND CONCLUSION: The equation was successfully established. The validation results showed that no significant differences between the equation established in this study and mean value weighed by underwater method (F = 0.097, P = 0.849). The newly-established equation can be applied into the speculation of fat rate among male college students in Guangxi Zhuang autonomous region.