Testosterone in athletes

arsenio7

New Member
Several articles are showing that many athletes have an FT that is debatably low.

Such in this one:
1660748527557.webp

male-athlete-2.webp

As an amateur marathoner (just about the 3hour for full-marathon), it seems that my endogenous FT (around 0.33 nmol/L) is acceptable.

It's well known that long-distance runners are having kinda low T/low FT.

But what amazes me the most is to see sprinters (0.39 nmol/L) which are usually kinda literally beasts of muscles having T which is pretty low compared to the normal population... but they still have outstanding explosiveness, quick power, recovery, and important muscle mass.

Is there a piece of the puzzle am I missing?

This post is a bit out-of-subject, but I'd be very interested in knowing the advice of the ExcelMale community members (who are actually always impressing me by the quality of their posts/responses)
 
Good stuff. I figured the distance athletes would have had lower relative T/FT results for the reasons you mentioned. But not sure I would call the overall FT results "low". Looks average. Did you expect them to be over range?
 
... exercise does consume testosterone
Do you have any references for that? Even if exercise were enhancing testosterone metabolism the HPTA would normally compensate with increased production. My impression is that the regulatory set point of the hypothalamus is actually lowered.
 
Several articles are showing that many athletes have an FT that is debatably low.

Such in this one:
View attachment 24821
View attachment 24823
As an amateur marathoner (just about the 3hour for full-marathon), it seems that my endogenous FT (around 0.33 nmol/L) is acceptable.

It's well known that long-distance runners are having kinda low T/low FT.

But what amazes me the most is to see sprinters (0.39 nmol/L) which are usually kinda literally beasts of muscles having T which is pretty low compared to the normal population... but they still have outstanding explosiveness, quick power, recovery, and important muscle mass.

Is there a piece of the puzzle am I missing?

This post is a bit out-of-subject, but I'd be very interested in knowing the advice of the ExcelMale community members (who are actually always impressing me by the quality of their posts/responses)
Many athletes overwork themselves and lower their testosterone levels. A pretty common occurrence.
 
Good stuff. I figured the distance athletes would have had lower relative T/FT results for the reasons you mentioned. But not sure I would call the overall FT results "low". Looks average. Did you expect them to be over range?
1660990988057.webp

According to the value at the 25th percentile, we see that nearly one quarter of the athlete are with low freet (0.225nmol/L being usually used at a limit)

On the other hand, I just saw that that athlete blood samples were not collected in the morning when T is peaking as in most protocols where we try to compare T or fT or diagnose hypogonadism.
1660991784898.webp
 
Over doing cardio kills testosterone levels. I thought this was common knowledge until last week when I was told I was full of shit.
Lifting heavy weights is supposed to help with testosterone levels but then doing cardio will burn fat muscle and testosterone.

A doctor will tell you to excise more when your natural levels are low but if you already train 6 to 12 hours a week it’s not going to work. That’s when athletes start cheating.
 

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Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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