Yawancin dalilai suna tasiri ga bunkasa jiki:
1. Lafiya.
2. Yanayin waje.
3. Ilimin jiki.
4. Yarda da tsarin mulki na yini.
5. Gina.
6. Hardening.
7. Harkokin asali.
Nauyin jaririn jariri cikakken lokaci shine 2500-3500 gm. A cikin shekaru 1 na rayuwa, nauyin jikin yaron yana ƙaruwa. A wannan shekara ya kamata sau uku.
Matsanancin dabi'u na riba mai yawa ga kowane wata na rabin rabin shekara shine, hm:
1st watan - 500-600
2nd watan - 800-900
3rd watan - 800
Watanni 4 - 750
Watanni 5 - 700
Watanni 6 - 650
Watanni 7 - 600
Watanni 8 - 550
Watanni 9 - 500
Watanni 10 - 450
Watanni 11 - 400
Kwanni na 12 shine 350.
Kusan yawan ribar da aka samu na wata a cikin shekarar farko na rayuwa za a iya ƙaddara ta hanyar dabara:
800 g - (50 x n),
Nauyin jiki a farkon shekara ta rayuwa za a iya ƙaddara ta hanyar dabara;
Ga watanni shida na farkon wannan tsari, nauyin jiki shine:
taro a lokacin haihuwa + (800 x n),
inda n shine adadin watanni, 800 shine matsakaicin nauyin kuɗin kowane wata a farkon rabin shekara.
Don rabin rabin shekara ta jiki nauyi shine:
taro a lokacin haihuwa + (800 x 6) (riba mai yawa don rabin rabin shekara) -
400 g x (n-6)
inda 800 g = 6 - karuwar haɓaka don rabin rabin shekara;
n shine shekarun cikin watanni;
400 g - yawan kuɗin da aka samu a kowane wata ga rabin rabin shekara.
Yarinyar mai shekaru guda yana kimanin kilo 10 a matsakaici.
Bayan shekara ta farko na rayuwa, saurin karuwar nauyin jiki yana raguwar hankali, karuwa ne kawai a lokacin balaga.
Nauyin jikin mutum mai shekaru 2-11 zai iya ƙaddara ta hanyar dabarar:
10 kg + (2 x n),
inda n shine yawan shekarun.
Saboda haka, yaro a shekaru 10 dole yayi la'akari:
10 kg + (2 x 10) = 30 kg.
Height (jiki tsawon).
A cikin watanni uku, tsayin daka kusan 60 cm A cikin watanni 9, 70 cm, a shekara - 75 cm ga yara maza da 1-2 cm kasa ga 'yan mata.
1, 2, 3 - kowane wata don 3 cm = 9 cm.
4, 5, 6 - kowane wata don 2.5 cm = 7.5 cm.
7, 8, 9 - kowane wata don 1.5 cm = 4.5 cm.
10, 11, 12 - kowane wata don 1 cm = 3 cm.
Sakamakon haka, a kan yaron yaron ya girma ta hanyar 24-25 cm (74-77 cm).
Sassan daban-daban na jikin yaron sunyi girma sosai, ƙananan ƙananan ƙwayoyin su ne, tsayin su yana karuwa sau biyar a duk tsawon lokacin girma, tsawon tsayi na sama da sau 4, jigon sau uku sau uku, da kuma girman kai 2 sau biyu.
Lokacin farko na girma girma yana faruwa a cikin shekaru 5-6.
Taron na biyu shine shekaru 12-16.
Matsayin matsakaici na yaron a ƙarƙashin shekaru 4 an ƙaddara ta hanyar dabara :
100 cm-8 (4-n),
inda n shine yawan shekarun, 100 cm shine girma daga cikin yaron a shekaru 4.
Idan yaro ya fi shekaru 4 , to, girma ya daidaita da:
100 cm + 6 (4 - n),
inda n shine yawan shekarun.
Circumference na kai da thorax
Tsarin ɗan jariri yana da 32-34 cm Maƙarar kai yana ƙara yawan hanzari cikin farkon watanni na rayuwa:
a cikin farkon trimester - 2 cm kowace wata;
a karo na biyu na uku - 1 cm kowace wata;
a cikin kashi na uku na shekara - 0.5 cm kowace wata.
Hanyar kai a kan yara na shekaru daban-daban
Shekaru - Matsayi na tsakiya, cm
Yarawa 34-35
3 watanni - 40
Watanni 6 - 43
Watanni 12 - 46
2 shekaru - 48
4 shekaru - 50
Shekaru 12 - 52
Tsarin kirjin a cikin jariri shine 1-2 cm kasa da kewaye da kai. Har zuwa watanni 4 akwai daidaituwa na ƙwaƙwalwa tare da kai, daga baya maɗarin ƙirar ya kara sauri fiye da kewaye da kai.
Yanayin ciki zai zama dan kadan (ta 1 cm) a kewaye da kirji. Wannan alama alama ce har zuwa shekaru 3.