Developing Finger Strength

Scales are a great way to develop finger strength and dexterity. However, with standard fingering (eg right hand 123,1234,123,12345 - ascending) finger 5 gets a raw deal over 2 octaves, whilst 123 gets used EIGHT times if ascending and descending.  Therefore an exercise using only 4 and 5 or 3,4,5 is good. Eg start on a high C and play cba. bag, agf, gfe, fed, using 345. Do it in short doses though! Once at the start of practice and perhaps at the ned of practice as well.