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Tinh chi so khoi co the (BMI) de kiem tra xem can nang cua ban co nam trong pham vi khoe manh khong. Mien phi, tuc thi va chinh xac.
Chi so khoi co the (BMI) la phep tinh don gian su dung chieu cao va can nang cua mot nguoi. Gia tri BMI la chi so tuong doi dang tin cay ve luong mo co the doi voi hau het moi nguoi. No duoc phat minh vao nhung nam 1830 boi nha toan hoc nguoi Bi Adolphe Quetelet va van la mot trong nhung chi so sang loc suc khoe duoc su dung rong rai nhat tren the gioi.
BMI duoc tinh bang cach chia can nang tinh bang kilogram cho binh phuong chieu cao tinh bang met (BMI = kg/m²). Vi du, mot nguoi nang 70 kg voi chieu cao 1,75 m se co BMI la 70 ÷ (1,75 x 1,75) = 22,9. May tinh cua chung toi tu dong xu ly chuyen doi ca don vi met va don vi Anh.
| Nhom | Pham vi BMI |
|---|---|
| Thieu can | < 18.5 |
| Can nang binh thuong | 18.5 – 24.9 |
| Thua can | 25.0 – 29.9 |
| Beo phi (Cap do I) | 30.0 – 34.9 |
| Beo phi (Cap do II) | 35.0 – 39.9 |
| Beo phi (Cap do III) | ≥ 40.0 |
Mac du BMI la cong cu sang loc huu ich, no co nhung han che quan trong. No khong phan biet giua khoi luong co va mo, nghia la van dong vien co the bi phan loai la thua can mac du co luong mo co the thap. BMI cung khong tinh den tuoi, gioi tinh, dan toc hoac su phan bo mo co the. De danh gia suc khoe toan dien hon, hay can nhac ket hop BMI voi cac phep do khac nhu vong eo, ty le mo co the va ket qua xet nghiem mau.