Figure 2: The figure shows ratio of HF to LF ratio across four age groups in males and females. It depicts the age-related decline in HF/LF ratio in males and females. Females have significantly higher HF/LF ratio as compared to males in the adolescent and adult groups. In the two extreme of ages the ratio is almost similar; *significantly different from children group; #significantly different from adult group; $Significantly different from males of similar age group using two-way ANOVA.