The consequence of core-strength physical exercise on speed, quickness and power in U-17 soccer trainees has been studied. Twenty-six soccer players who were the sole soccer coaching project team at Dambi Dollo city through age U-17 were handily selected and participated in the study. Among those, 1/2 them were arbitrarily chosen as EG, which specially ready core strength coaching was applied; the rest were CG Weight and height averages of U-17 EG and CG were similar at ar56.92 kilogram and fifty-seven.77 kilogram in weight and one.68m and 1.71m tall severally. Before coaching, the noble metal of 2 teams of 13 (13) players (I.A.T. and TT of gracefulness tests, VJ and SLJ tests of anaerobic power tests and 10m and 40m dash speed tests) were recorded. The core strength coaching was enforced on the EG double weekly, thirty-five to forty minutes daily. Therefore, when six weeks of core strength coaching. When 3 months, post-test mensuration on similar parameters was taken. The distinction between the tests were analyzed statistically, with paired sample "t" check at P<0.05. Consequently, it had been ascertained that core strength coaching enforced on junior level players caused important enhancements between pre and post check results of gracefulness, during which length to complete IAT and TT was belittled by a mean distinction of zero.381 seconds at P=0.001 and 0.738 seconds at P=0.000. Speed during which length of 10m and 40m dash speed check result was belittled by a mean distinction of .1262seconds at P=.020 and 0.1293seconds at P= zero.010 severally. And power, during which height and length of VJ and SLJ check result were inflated by a mean distinction of .06m at P= zero.000 and 0.1161m at P= zero., 003, respectively. As result, the investigator suggested that adding core strength coaching on their football educational program helps to enhance players speed, gracefulness and power