Back muscles are exposed by 7%~9%, especially abdominal muscles and external oblique muscles (competitive state of bodybuilders).
From 10% to 12%, the fat in all parts of the body is not slack, and the abdominal muscles are obviously divided.
From 13% to 15%, the fat in all parts of the body is basically not slack, and the abdominal muscles begin to appear, and the size is not obvious.
From 16% to 18%, the fat in all parts of the body is loose and the abdominal muscles are not exposed.
19%~2 1% abdominal muscles are not exposed, and the waist circumference is usually 8 1~85 cm.
22%~24% of the abdominal muscles are not exposed, and the waist circumference is usually 86~90 cm.
Extended data:
computing formula
Formula for calculating body fat rate of adult women:
Parameter a= waist circumference (cm) ×0.74
Parameter b= weight (kg) ×0.082+34.89.
Body fat weight (kg) = a-b
Body fat rate = (total body fat weight/body weight) × 100%
Formula for calculating body fat rate of adult males:
Parameter a= waist circumference (cm) ×0.74
Parameter b= weight (kg) ×0.082+44.74.
Body fat weight (kg) = a-b
Body fat percentage = (total body fat weight/body weight) × 100%.
Baidu Encyclopedia: Body Fat Rate