1. S. Andraos, K.L. Beck, C.A. Conlon, and J.V. de Seymour are with the School of Sport, Exercise and Nutrition, College of Health, Massey University, Auckland, New Zealand. M.B. Jones is with the Department of Statistics, Faculty of Science, University of Auckland, Auckland, New Zealand. T.-L. Han is with the Department of Obstetrics and Gynaecology, the First Affiliated Hospital of Chongqing Medic