On average, males walked 7.2% faster than females (1.31 vs. 1.22 m · s(-1), P<.001) and had 32.3% greater vertical axis counts · s(-1) (54.6 vs. 39.4 counts · s(-1), P<.001). Accounting for walking speed reduced the sex difference to 19.2% and accounting for step length further reduced the difference to 13.4% (P<.001).