Jumping and hopping can slightly displace my kneecap. But it never makes me laugh. You must be very good natured. I can run and skip without trouble.
We share the impression about elders, but it may be more about how much absorption your body can effect. One vexing question is how do you know.
If you look at the mcchanisms of action with bisphosphonates objectively, you'd conclude that a bisphosphonate would "blunt" the effect of Forteo. I have it from a bone expert that alendronate is the bis to use intermittantly because is has the least persistance in the bone. zolendronate (Reclast) is the most persistent in the bone.

While scavenging for ideas, it occurred to me that we need brief periods of osteoclasts. Osteoblasts work most effectively when coupling with osteoclasts. My plan with the bone markers is to follow them until the anabolic window closes and then pause the Forteo. If the CTX or when CTX rises sufficiently or P1NP drops significantly, I'll take either alendronate or Forteo. I'll try to avoid the bisphosphonates because of the type of bone they form.

The very nice curve illustrated by Kim et all might be accurate.
I have it from an endocrinologist that in his long practice the anabolic window in most women drops after three months on Forteo according to the bone markers. While that didn't happen to me or my markers, we may be all quite different from the graph. This being the value of the bone markers.
Neither the bone markers, nor qualitative CT are standard of care or widely used. "Economic feasibility" has a role in adoption of these standards. Both types of measurement are costly and insurers don't like to pay for them.
But to your question about CTX. It isn't as stable as P1NP. Some people say unreliable but it does reflect what is happening with the bone, it is just more variable. Time of day, whether you've eaten or not, whether you've exercised or had a recent fracture affect the CTX results.
I want them both because I'm using them in relation to each other in this way. My CTX reading has increased by 1/3rd, but my P1NP has doubled. I''ll continue with Forteo until CTX reads as a higher percentage increase than P1NP. But this may be an incorrect mcethod.
Your P1NP reading is great and I would say that you wouldn't have been advantaged by having it before treatment. And even that you wouldn't have been advantaged by having a CTX. Clearly Forteo is effective for you. If your P1NP were equivocal, then I'd wish you'd had both bone markers before and after. I get the markers every three months.
It is important and also more interesting to know your source and question the information.
You noticed that the article recommended more protein than the CDC recommends. The author works for the beef and egg industry.
I try take 100 grams of protein a day. Just guessing.