Exercise capacity of black sickle cell trait males.

Aerobic capacity data were collected on matched groups of 16 black sickle cell trait males and 16 non-trait males. The subjects were matched on race, age, weight, sex, physical activity profile, skinfolds, and smoking habits. Total treadmill times, predicted and actual Vo2 max, max HR, and recovery HR were compared. The Bruce Multi-Stage Treadmill Test was administered with continuous ECG and OCC (Oxygen Consumption Computer) monitoring. The results indicated no significant difference (P greater than .05) between the trait and non-trait subjects on any of the performance variables.