I guess if you are doing a back-of-the-envelope calculation, a linear relationship could be assumed. BUT I would consider it only as a “best case scenario” because it’s unlikely that the assumed linear relationship is true.
@Nashtide: you’re right about FT as opposed to TT. Unfortunately, many people and studies just use TT numbers. It’d be nice to see lots of data including FT though.
@gonadthebarbarian: you’re almost certainly correct about that.
I did some more back-of-the-envelope calculations, again on the Dr. Ho, et al, study. I looked at the amount deadlifted per pound of FFM. Had to convert everything to pounds because I can’t get a good feeling for KG.
Placebo Group:
Week 0: 2.76 lbs
Week 8: 2.86
Week 14: 2.91 (assumes same FFM as Week 8, but they didn’t actually measure weight in week 16)
GH-only Group:
Week 0: 3.06
Week 8: 3.07
Week 14: 3.24 (same assumption for all of these)
Testosterone-Only Group:
Week 0: 3.18
Week 8: 3.12
Week 14: 3.28
Testosterone + GH Group:
Week 0: 2.99
Week 8: 2.7
Week 14: 2.92
For both groups using testosterone, they actually got weaker per-lb of LBM in Week 8, and then got stronger again in Week 14. Not sure what accounts for this, other than perhaps a quirky sample group.
The GH-only group saw the biggest overall boost in strength/lb by Week 14. Test + GH saw strength levels back to about baseline by that point.
Re: quirky sample group:
There were actually 3 different training programs: “Power”, “Endurance”, and “Mixed.” For whatever reason, the proportions in each group doing each training program was different in each. Not sure why.
The beginning levels of body composition were also different enough to warrant a pause. The Placebo group was the fattest at the beginning, with a mean Body Fat % of 21.7. The GH-only and Test+GH groups were the fittest, at 17.5% and 19.1% respectively,
Though only a few percentage points, it’s obvious that some members were in significantly better shape than others.
I will tell you my experience relating to this part of your question.
In my case muscle size, muscle definition, strength, and lean body mass all increased. I have gotten bulging muscles that don’t look average or normal.
I started TRT 3 years ago when my TT was about 270. I have varied my doses from time to time, but lately have been using more and running above range - about 1200 to 1300 ng/dL. I call it enhanced TRT.