Well, my formula is not quite as amazing as the accomplished Einstein’s E=MC2, but you make the call!
I was recently trying to explain to a doctoral intern about purpose of home exercise program in terms of pain relief, especially in the mode of directional preference. The concept was that basically the more ‘irritable’ or less capacity of any type of load the patient can withstand; the more frequent he or she will need to perform a specific, self-relieving exercise program. Basically, there is an inverse relationship between frequency of exercises and loading capacity.
So, we both went to the drawing board (I have a white board in the office) to figure out a formula to determine how often a patient should perform an exercise for not only relief, but prevention of symptoms. This is only defined in an individual who is either flexion or extension intolerant for a period of time.
An example is a patient who has referral pain into a limb from sitting too long (lumbar derangement, HNP, etc). Another example is an individual who has referral pain into a limb from standing/walking too long (i.e. spinal stenosis).
Basically frequency is amount of times (in sets of 10) that exercises need to be performed an hour. Capacity is the amount of time (in minutes) that a patient can perform any activity without pain (or symptoms). If a patient can sit for 30 minutes before symptoms arise, then he/she needs to perform your directed exercise program twice/hour. If only 15 minutes, then perform 4 times/hour. Now, this only works if the exercise prescription gets the job done!