Starvation Mode - Adaptive Thermogenesis and Weight Loss

There are problems (IMO) with your example. Losing that much weight, the person should recalculate during loss and not expect the cut used in the beginning to work for the entire course. But if they did, the deficit would decrease because of the weight loss potentially compounded by MR slowdown. And a decreased deficit would not continue to decrease the MR as much, correct? I still have only seen hypothetical people and not actual subjects from studies that "cross zero" and have a deficit cancelled out completely due to AT.

This example doesn't get in to how the weight was gained in past year, I'm betting to discouragement and binges during the time. Each binge not long enough to raise metabolism, merely add fat.
Also the estimate of how much being eaten may be off as we know since based on memory. But, if she had been eating more prior, then how did eating more post involvement cause an improvement? So probably valid enough.
Also, the potential RMR was based not on bodyfat%, but if RMR had been legitimately less because of less LBM, it would never have raised either after intervention.
I've found several of these case type studies, not true studies since they only get to start recording info when they see the person, but interesting none-the-less what you can discern from the effects after a treatment is followed. I think it proves several points.

---

A similar case study was published by Jampolis (2004).
A 51 year old patient complained of a 15 lb weight gain over the last year despite beginning a strenuous triathlon and marathon training program (2 hours per day, 5-6 days per week).
A 3 day diet analysis estimated a daily intake of only 1000-1200 Calories.
An indirect calorimetry revealed a resting metabolic rate of 950 Calories (28% below predicted for age, height, weight, and gender).
After medications and medical conditions such as hypothyroidism and diabetes where ruled out, the final diagnosis was over-training and undereating. The following treatment was recommended:

Increase daily dietary intake by approximately 100 Calories per week to a goal of 1500 calories
32% protein; 35% carbohydrates; 33% fat
Consume 5-6 small meals per day
Small amounts of protein with each meal or snack
Choose high fiber starches
Select mono- and poly- unsaturated fats
Restrict consumption of starch with evening meals unless focused around training
Take daily multi-vitamin and mineral supplement
Perform whole body isometric resistance training 2 times per week

After 6 weeks the patient's resting metabolism increased 35% to 1282 Calories per day (only 2% below predicted).
The patient also decreases percent fat from 37% to 34%, a loss of 5 lbs of body fat.

Jampolis MB (2004) Weight Gain - Marathon Runner / Triathlete. Medicine & Science in Sports & Exercise, 36(5) S148.

This post is totally unsuitable for MFP.

Factual information backed up with research that you have actually referenced.

HOW VERY DARE YOU!

:laugh:

Thank you so much for this. It's a great read and I have learnt a lot. :drinker:

There are problems (IMO) with your example. Losing that much weight, the person should recalculate during loss and not expect the cut used in the beginning to work for the entire course. But if they did, the deficit would decrease because of the weight loss potentially compounded by MR slowdown. And a decreased deficit would not continue to decrease the MR as much, correct? I still have only seen hypothetical people and not actual subjects from studies that "cross zero" and have a deficit cancelled out completely due to AT.

This example doesn't get in to how the weight was gained in past year, I'm betting to discouragement and binges during the time. Each binge not long enough to raise metabolism, merely add fat.
Also the estimate of how much being eaten may be off as we know since based on memory. But, if she had been eating more prior, then how did eating more post involvement cause an improvement? So probably valid enough.
Also, the potential RMR was based not on bodyfat%, but if RMR had been legitimately less because of less LBM, it would never have raised either after intervention.
I've found several of these case type studies, not true studies since they only get to start recording info when they see the person, but interesting none-the-less what you can discern from the effects after a treatment is followed. I think it proves several points.

---

A similar case study was published by Jampolis (2004).
A 51 year old patient complained of a 15 lb weight gain over the last year despite beginning a strenuous triathlon and marathon training program (2 hours per day, 5-6 days per week).
A 3 day diet analysis estimated a daily intake of only 1000-1200 Calories.
An indirect calorimetry revealed a resting metabolic rate of 950 Calories (28% below predicted for age, height, weight, and gender).
After medications and medical conditions such as hypothyroidism and diabetes where ruled out, the final diagnosis was over-training and undereating. The following treatment was recommended:

Increase daily dietary intake by approximately 100 Calories per week to a goal of 1500 calories
32% protein; 35% carbohydrates; 33% fat
Consume 5-6 small meals per day
Small amounts of protein with each meal or snack
Choose high fiber starches
Select mono- and poly- unsaturated fats
Restrict consumption of starch with evening meals unless focused around training
Take daily multi-vitamin and mineral supplement
Perform whole body isometric resistance training 2 times per week

After 6 weeks the patient's resting metabolism increased 35% to 1282 Calories per day (only 2% below predicted).
The patient also decreases percent fat from 37% to 34%, a loss of 5 lbs of body fat.

Jampolis MB (2004) Weight Gain - Marathon Runner / Triathlete. Medicine & Science in Sports & Exercise, 36(5) S148.

It's only plenty if you spend each of those 3 sessions doing 1.5-2 hour workouts to make sure you get everything at least 2x/week.