Objective
To compare the change of oxygen consumption and heart rate between walking and running at the same condition of treadmill in healthy male college students.

Method
Twenty healthy male college students completed steady-state treadmill test at 3 mph and 5 mph, separately, by walking and running. During the each 6 minutes treadmill test, oxygen consumption (VO₂), heart rate (H.R), oxygen consumption ratio of maximal oxygen consumption (% VO_2max), and heart rate ratio of maximal heart rate (% HR) were measured each minute.

Results
The showed that mean heart rate were 123.40⁑4.62 beats/min and oxygen consumption were 12.84⁑1.94 ml/kg/min, in 3 mph walking. The mean heart rate were 139.90⁑6.80 beats/min and oxygen consumption were 16.51⁑1.78 ml/kg/min in 5 mph walking. The running showed that mean heart rate were 187.55⁑6.74 beats/min and oxygen consumption were 26.45⁑3.11 ml/kg/min in 3 mph walking. The mean heart rate were 168.45⁑13.34 beats/min and oxygen consumption were 21.05⁑2.00 ml/kg/min in 5 mph walking. There were significant differences (p＜0.05) in mean heart rate, VO₂ between the 3 mph walking and running, the 5 mph walking and running.

Conclusion
We concluded that 3 mph walking and running and 5 mph running were an effective exercise to promote health in healthy college students.