But the ratio is even greater among active women, affecting up to 80 percent of female endurance athletes.(Para. 4) But the figure is even greater among women who do exercises regularly affecting as many as 80 percent of female endurance athletes• But the ratio is even greater among active women, affecting up to 80 percent of female endurance athletes. (Para. 4) But the figure is even greater among women who do exercises regularly, affecting as many as 80 percent of female endurance athletes