Abstract: According to whether experiencing menarche or not, the investigated girls at 11一13 ages were classified into two groups: group with menarche and group without menarche. Comparisons between two groups showed that height, weight, lean body mass (LBM) and absolute value of VO2max, VO2max/height and VO2max/HRmax in girls without menarche were smaller than that in their peers with menarche, and VO2max/weight and VO2max/LBM were bigger slightly. The possible reasons of emerging the differences were analysed.

Key words: Maximal oxygen uptake; Menarche; Girls