Basal Metabolic Ratedr. I Komang Yose Antara

Metabolisme DIFINISI: PERUBAHANSEMUA REAKSI/TRANSFORMASI KIMIAWI YANG TERJADI DI DALAM TUBUHADA 2: KATABOLISME ANABOLISME

Katabolisme PEMECAHAN MOLEKUL BESARKECIL DENGAN MELEPASKAN ENERGIContoh: A B + C + ENERGI KARBOHIDRATH2O +CO2 + ENERGI

AnabolismePENYUSUNAN MOLEKUL BESAR DARI ELEMEN-ELEMEN DASAR DENGAN MEMBUTUHKAN ENERGIContoh: A +B + ENERGI C MONOSAKARIDA+ DISAKARIDA+ ENERGIKARBOHIDRAT

Metabolisme energiENERGI YANG DIHASILKAN=KERJA LUAR + SIMPANAN ENERGI+ PANASKERJA LUARKERJA OTOTEFISIENSI OTOT 50%, PERBANDINGAN ANTARA KERJA YG DILAKUKAN DG ENERGI TOTAL YANG DIPERLUKAN.SIMPANAN ENERGISENYAWA BERENERGI TINGGI: ATP, GTP, CrP, GTP

Satuan energi/panasKALORI (c=kal) DAN KILOKALORI (C= kkal)Definisi: jumlah panas yg diperlukan untuk menaikkan suhu 1 gr air 1 derajat dari 15oC 16 oC.

Kalorimetri CARA PENGUKURAN PANAS YANG DIKELUARKANADA 2: LANGSUNG BOM KAL. BAHAN MAKANAN DIBAKAR SECARA SEMPURNAH2O, CO2, ENERGINILAI BHN MAKANAN KH 4,1 KKAL/gr LEMAK 9,3 KKAL/gr PROTEIN5,3 KKAL/gr

Kalorimetri TIDAK LANGSUNG :DENGAN MENGHITUNG PRODUK OKSIDASI BIOLOGISNYA: CO2, H2O, N2NILAINYA SESUAI DENGAN BANYAK O2 YANG DIGUNAKAN.1 LITER O2 = 4,82 kkal

RQ=RESPIRATORY QUOTIENTRASIO ANTARA VOL. CO2 YG DIHASILKAN DG VOL.O2 YG DIGUNAKAN PER SATUAN WAKTU DL KEADAAN SEIMBANGRQKH = 1,0 C6H12O6 + 6O26 CO2 +6H2OLEMAK =0,7 2C51H96O6 + 145O2102CO2 + 98H2OPROTEIN = 0,82

Definisi BMR

Jumlah energi yang digunakan tubuh dalam 24 jam pada keadaan istirahat, puasa dalam suhu lingkungan normal

Faktor yang mempengaruhi BMRGenetikPria > wanitaBayi > anak > dewasa > orang tuaBody surface area : kurus > gemuk tinggi > pendekFat bodyDietSuhu tubuhSuhu lingkunganHormon tiroidExercise

Kebutuhan EnergiTDEE (total daily energy expenditure) : berapa jumlah energi yg dibutuhkan tubuh dalam 1 hariAccording to exercise physiologists William McArdle and Frank Katch, the average maintenance level for women in the United States is 2000-2100 calories per day and the average for men is 2700-2900 per day.

Kebutuhan EnergiAnak2 BB 20kg1500+((N-20)x20)kalori/hari

Kebutuhan EnergiFaktor yang dihitungAgeSexHeightWeightLean body mass, andActivity level

BMR (Basal Metabolic Rate)

BMRThe Harris-Benedict formula (BMR based on total body weight) The Harris Benedict equation is a calorie formula using the factors of height, weight, age, and sex to determine basal metabolic rate (BMR).

MenBMR = 66 + (13.7 X wt in kg) + (5 X ht in cm) - (6.8 X age in years)WomenBMR = 655 + (9.6 X wt in kg) + (1.8 X ht in cm) - (4.7 X age in years)

BMRExample: You are female You are 30 yrs old You are 5' 6 " tall (167.6 cm) You weigh 120 lbs. (54.5 kilos) Your BMR = 655 + 523 + 302 - 141 = 1339 calories/day

Note: 1 inch = 2.54 cm. 1 kilogram = 2.2 lbs.

BMRActivity MultiplierSedentaryBMR X 1.2 (little or no exercise, desk job)Lightly activeBMR X 1.375 (light exercise/sports 1-3 days/wk)Mod. ActiveBMR X 1.55 (moderate exercise/sports 3-5 days/wk)Very activeBMR X 1.725 (hard exercise/sports 6-7 days/wk)Extr. ActiveBMR X 1.9 (hard daily exercise/sports & physical job or 2X day training, i.e marathon, contest etc.)

BMRExample: Your BMR is 1339 calories per day Your activity level is moderately active (work out 3-4 times per week) Your activity factor is 1.55 Your TDEE = 1.55 X 1339 = 2075 calories/day

BMRKatch-McArdle formula (BMR based on lean body weight)

BMR (men and women)370 + (21.6 X lean mass in kg)

Example: You are female You weigh 120 lbs. (54.5 kilos) Your body fat percentage is 20% (24 lbs. fat, 96 lbs. lean) Your lean mass is 96 lbs. (43.6 kilos) Your BMR = 370 + (21.6 X 43.6) = 1312 caloriesTo determine TDEE from BMR, you simply multiply BMR by the activity multiplier:Example: Your BMR is 1312 Your activity level is moderately active (work out 3-4 times per week) Your activity factor is 1.55 Your TDEE = 1.55 X 1312 = 2033 calories

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