It’s Useful to Know Your Basal/Resting Metabolic Rate (BMR/RMR)

Shawn M

Member
I recently went to our neighborhood Physical Therapy office where their offerings included diet and weight loss programs. One of their metrics was a Resting Metabolic Rate (RMR). I expressed an interest in having the test on a standalone basis. At first they offered to work on partially paying for the test with my health insurance, but it turned out that a physician’s referral was required. I ended up negotiating what I thought was a fair price ($70). I was interested to compare the results with a test I had years ago to see if I’m slowing down. Following are a comparison of the results:


Date of Test 3/7/2005 , 2/10/2020

Age at test 51 , 66

Weight, lbs 200 , 199

Height, ft, in 6’1” , 6’0”

Body Mass Index 26.4 , 27.0

(“Overweight”: 25.0-29.9)

Measurement Method Bioimpedance , Breathylizer

BMR/RMR, Calories/Day 2053 , 2318

My comments on these test results are:

* It’s a good sign for me that my RMR has not deteriorated over time, but gone up a bit. Possible explanations include: retirement suits me better with 2 days/wk vs 1 day at the health club if I could manage it as a working parent; two years into retirement my energy is coming back as I dial into a good place on my TRT program; variability of the test methods

* I’ve lost only one inch of my adult height. Hopefully that (bone loss) won’t continue if I maintain good hormone levels on TRT.

* I don’t overly concern myself with the BMI metric. Like other men my age, I have accumulated a nominal amount of visceral abdominal fat, but I also carry a noticeable amount of lean muscle mass in my upper body. Everything comes down to athleticism (how you can move yourself around) in my opinion.

I’d be interested in other Forum members’ experience with their body composition and metabolism then/now and before/after TRT.
 

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TRT Hormone Predictor Widget

TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

Predicted Hormone Levels

Enter your total testosterone value to see predictions

Results will appear here after calculation

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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