3.3. RET Responses
RET
REGRESSION
RET resulted in significant increases in lean mass and strength from baseline in all three groups while only low and med groups lost significant body fat (Because there was no difference between males and females in muscle responses to RET (male vs. female; percent change in lean mass: 3.6 ± 2.0 vs. 3.6 ± 3.6, Because choline consumption was significantly correlated with folate, vitamin BSince RET responses in med and high groups were similar (Multiple linear regression analyses were also conducted to evaluate the independent association of dietary choline and other nutrients, as well as potential confounders. All the variables were initially entered into the regression equation, and the variables were sequentially removed at each step with the backward elimination method. The final model showed that low choline intake independently predicted percent change in composite strength, with betaine intake, male sex, and lean mass remaining in the model (adjusted R