Figure 1From: Sex and hand differences in circadian wrist activity are independent from sex and hand differences in 2D:4D Acrophase for Right and Left Hands of Male vs. Female Subjects. Mean (± standard error) acrophase for right and left hands of males and females across 3 days. Females peaked earlier in the day than males in the right (*p = 0.002) and left (**p = 0.008) hands. The right hand peaked before the left in combined subjects (paired t-test; p < 0.01).Back to article page