Effects of gender, age, and fitness level on response of VO2max to training in 60-71 yr olds.
Kohrt WM, Malley MT, Coggan AR, Spina RJ, Ogawa T, Ehsani AA, Bourey RE, Martin WH, Holloszy JO. Effects of gender, age, and fitness level on response of VO2max to training in 60-71 yr olds. J Appl Physiol (1985). 1991 Nov; 71(5):2004-11.