The bideltoid breadth is an anthropometric measurement that determines the maximum horizontal width across the shoulders, taken between the outermost points of the deltoid muscles.
It is measured from the lateral edge of one deltoid muscle to the lateral edge of the opposite deltoid muscle.
The average bideltoid
This is a pretty hot topic.
Many individuals claim to have wide bideltoid measurements, even though the average among trained individuals in the military is only around 20 inches. Cagefuel.
A good explanation for this bidelt hyperinflation are measurement errors.
In most cases these are caused either by the inability to measure correctly and mental masturbation influencing the end results.
The biacromial breadth
Don't confuse this for the bideltoid breadth.
This measurement determines the distance between the lateral ends of the clavicles.
It provides a more accurate assessment of the skeletal frame, since muscle mass does not affect the measurement.
If someone tells you their bideltoid just assume it is 1-2 inches less than they claim tbh.
It doesn't matter at all what someones bidelt in the internet is. Doesn't influence anyones life.