The purpose of the study was to examine changes in cardiovascular function and neuromuscular performance of primary grade girls after a six-week treatment program. The Kraus-Weber Tests and modified Harvard Step Test were administered to sixty-seven subjects before and after the treatment program, which consisted of exercises and running for the experimental group and sedentary games for the control group. None of the significant differences in recovery heart rate or the Kraus-Weber tests could be attributed to the treatment program. The length of training program was apparently not enough to detect change in fitness level of the subjects. A need exists for exercise tests that are more meaningful and more easily administered.