The following abstract are in PDF form. 
Physiological Demands of Women's Rugby Union: Time Motion analysis and Heart Rate Response
The purpose of this study was to use time motion analysis to quantify movement patterns as well as monitor match heart rates of female premier first division club rugby union athletes (18-40yrs). It is hypothesized that there would be a significant difference between the 2 positional groups of forwards and backs. It was also hypothesis that there would be no significant difference between each half of the game.