Sprint ability in terms of agility, force, and power was studied in thirty non-athlete male university students by measuring height, weight, 50 mater dash, stepping in chair, leg extension force, vertical jump, and maximum anaerobic power. The relationship between performances of 50 meter dash and ergometric powers was also examined by comparing six non-athletes and nine sprinters in their performances of 50 meter dash and the powers they put out in Monark's bicycle ergometer under eight work loads from light to heavy. The results were as follow : (1) High significant correlations were found between the performances of 50 meter dash and vertical jump (r =-0.783) and between 50 meter dash and maximum anaerobic poweres (r =-0.736). (2) Moderately high yet highly significant correlation was found between the performances of 50 meter dash and leg extension force (r=-0.574, p<0.001 for n=30). (3) Low but still significant correlation was found between the performances of 50 meter dash and stepping in chair test (r=-0.389, p<0.05 for n=30). (4) The performance of 50 meter dash correlated with height (r= -0.505, p<0.01 for n=30) and with weight (r=-0.437, p<0.05 for n=30). (5) The coefficient of correlation bretween the performance of 50 meter dash and the powers put out in bicycle ergometer became higher as the work load became heavier. The sprint ability is closely related with the ergometric power exerted under the near maximum anaerobic power. From the foregoing, it was speculated that the sprint ability is very much under the influence of ability to produce power at the work load of maximum anaerobic power which correspond to approximately 60 percent of maximum force.