Can you calculate the BMI for a girl who is 131.5 cm tall and weighs 27.5 kg?

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Last updated: September 30, 2026 • View editorial policy

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Izračun BMI-a za djevojčicu

BMI ove djevojčice iznosi 15,9 kg/m², što odgovara približno 50. percentilu za njenu dob (pretpostavljajući da ima oko 8-9 godina na osnovu visine), što je potpuno normalno i ne ukazuje na pothranjivanje.

Kako sam izračunao BMI

BMI se izračunava prema formuli: težina (kg) / visina (m)²

  • Težina: 27,5 kg
  • Visina: 131,5 cm = 1,315 m
  • BMI = 27,5 / (1,315)² = 27,5 / 1,729 = 15,9 kg/m²

Interpretacija prema smjernicama

Prema Endocrine Society Clinical Practice Guidelines 1, BMI kod djece i adolescenata ≥2 godine starosti mora se interpretirati pomoću CDC percentilnih krivulja za dob i spol, a ne apsolutnih vrijednosti. Ovo je ključno jer se BMI kod djece mijenja s rastom i razvojem.

Kategorije prema percentilima 1:

  • Normalna težina: BMI <85. percentila
  • Prekomjerna težina: BMI ≥85. ali <95. percentila
  • Gojaznost: BMI ≥95. percentila
  • Ekstremna gojaznost: BMI ≥120% od 95. percentila ili ≥35 kg/m²

Zašto "jako vitka" ne znači nužno problem

Bez poznavanja točne dobi djevojčice, teško je precizno odrediti percentil, ali na osnovu visine od 131,5 cm (što odgovara prosječnoj visini djevojčice od 8-9 godina), BMI od 15,9 kg/m² je u normalnom rasponu.

Važno upozorenje: Smjernice jasno navode da se endokrinološka evaluacija za uzroke pothranjivanja ili gojaznosti ne preporučuje osim ako dijete ima usporenu visinu ili brzinu rasta 1. Ako ova djevojčica normalno raste u visinu, nema razloga za zabrinutost.

Kada bi trebalo biti zabrinuto:

  • Ako je BMI <5. percentila (značajno pothranjena)
  • Ako je brzina rasta usporena
  • Ako visina zaostaje u odnosu na genetski potencijal (visinu roditelja)
  • Ako postoje drugi simptomi bolesti

Praktični savjet

Preporučujem da BMI ove djevojčice pratite godišnje tijekom redovnih pregleda 1 i uspoređujete s CDC percentilnim krivuljama za njenu specifičnu dob. Sama brojka od 15,9 kg/m² bez konteksta dobi i percentila ne govori dovoljno - potrebno je pratiti trend rasta kroz vrijeme, a ne samo jednu mjernu točku.

References

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