Energy balance
Resting metabolic rate (RMR) is highly homogeneous in healthy young adults after adjusting for metabolically active tissue (total body potassium), with protein turnover explaining only a small but significant fraction (approx. 20%) of the remaining variability.
If you are healthy, your resting metabolism is likely very similar to others of your size and active tissue mass. Don't blame 'slow metabolism' for weight issues; focus on body composition. Protein turnover plays a minor role in RMR differences.
This study examined whether variability among healthy young adults in resting metabolic rate, normalized for the amount of metabolically active tissue (assessed by total body potassium), is related to protein turnover... After adjusting metabolic rate for total body potassium, the standard deviation was only 89 kcal/day, or 5.5% of the average value... The regression analysis suggested that the contribution of protein turnover to resting metabolic rate was ~20% in an average subject.
Why this rating
Controlled clinical study with rigorous measurement of RMR (indirect calorimetry) and protein turnover (stable isotope infusion) in a homogeneous healthy population.
Source
Relationship of resting metabolic rate to body composition and protein turnover
Stephen Welle et al. · American Journal of Physiology-Endocrinology and Metabolism · 1990
DOI 10.1152/ajpendo.1990.258.6.e990
More from this paper
- Increased body fat is associated with elevated resting metabolic rate and protein turnover, even after accounting for lean body mass (total body potassium).Good
- Thyroid hormones (T4, T3) and insulin concentrations within the normal euthyroid range do not correlate with resting metabolic rate or protein turnover in healthy young adults.Good
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