I have no idea. For health, the guys at the Olympic Training Center made it clear that annual blood tests are your best bet. Cholestrol and triglycerides can be compared to past eating behaviors, prostate problems can be checked, even gout by blood tests. A yearly blood test has a standard to compare itself with, last year s blood test. In lifting, it is a little more murky.
Olympic lifters have their best competition snatch and clean and jerks.
The deadlift in competition may serve as a good standard. As long as your lifts go up, you are making progress. Photos have really helped my wife and may be an idea for others. Then she compares and contrasts them with the last batch. She discovered that the scale lies.