One workout per week may be enough for older women

... University of Alabama at Birmingham monitored 63 women who performed combined aerobic exercise training and weight training for 16 weeks. One group performed both training types one day per week, while a second group exercised two times per week. A ...

http://www.thestar.com.my/Lifestyle/Health/Fitness/2013/09/04/One-workout-per-week-may-be-enough-for-older-women.aspx