There are many formulas for calculating basal metabolic rate, which correspond to different methods. Here are only three of them, and the most commonly used one is the first method. It is more reliable to take the average of the results of the following formula when calculating:

1, basal metabolic rate% = (pulse rate+pulse pressure difference)-11(Gale method).

2. Basal metabolic rate %=0.75× (pulse rate+pulse pressure difference ×0.74)-72(Reed method).

3. Basal metabolic rate %= 1.28× (pulse rate+pulse pressure difference)-1 16(Kosa method).

The basal metabolic rate varies with age and sex. However, the basal metabolic rate is very close among normal people of the same sex, weight and age group, and the difference between the metabolic rate and the average value is less than 15% for about 90% of them.

Therefore, this percentage is regarded as the limit of normal value in clinic, and beyond this limit, it is considered as abnormal basal metabolism. For example, in patients with hyperthyroidism, the basal metabolic rate is 20 ~ 80% higher than the normal value; However, hypothyroidism is 20 ~ 40% lower than normal.

Determination of basal metabolic rate is a simple and effective method for clinical diagnosis of thyroid diseases. Others, such as adrenal cortex and anterior pituitary gland, can also show a decrease in basal metabolic rate when hormone secretion is insufficient.

When the body temperature rises, the basal metabolic rate also rises. Generally, the basal metabolic rate increases by 13% every time the body temperature increases. When people are hungry or undernourished for a long time, basal metabolism will decrease. In addition, the determination of basal metabolic rate and energy metabolic rate under different activity intensities is also the basis for formulating nutritional standards and arranging people's diets reasonably.