Changes in body composition accompanied by a reduction of food intake
have been reported to occur with aging, but these changes may not be a
n inevitable consequence of aging, if one continues a vigorous exercis
e program in later life. The diets and body composition of 16 enduranc
e-trained older athletes were compared to those of 24 healthy age and
BMI-matched sedentary men. Aerobic capacity was greater in athletes (p
< 0.001). Percent body fat and waist/hip ratio were lower in athletes
than in controls (p < 0.05). Protein and Kcal intake per kg body weig
ht were greater in athletes (p < 0.05). The composition of the diets w
as different also, with athletes consuming a greater percentage of the
ir calories as carbohydrate and less as alcohol and fat (p < 0.05). Pe
rcent body fat was inversely related to kcal/kg intake in athletes (r
= -0.58, p < 0.02), but not controls (r = -0.35, p = 0.18) and to VO2
max in controls (r = -0.45, p < 0.05) but not athletes (r = -0.17, p =
0.53). These results show that older endurance-trained male athletes
can maintain high levels of aerobic fitness and desirable weight and b
ody composition despite calorie intakes comparable to levels of much y
ounger men.