metabolic rate o amount of energy liberated from a living organism per unit of time o expressed in terms of the rate of heat liberation during the chemical reactions
metabolic rate ⚫ amount of energy liberated from a living organism per unit of time ⚫ expressed in terms of the rate of heat liberation during the chemical reactions
Metabolic rate Measurement of the metabolic rate Direct calorimetry Indirect calorimetry o Caloric value/thermal equivalent of food Oxygen consumption /thermal equivalent of oxygen (1 L Respiratory quotient (CO2/O
Metabolic rate Measurement of the metabolic rate Direct calorimetry Indirect calorimetry ⚫ Caloric value / thermal equivalent of food ⚫ Oxygen consumption / thermal equivalent of oxygen （1 L） ⚫ Respiratory quotient （CO2 / O2）
襄71几种营养物质在体内氧化时的几种数据 营养物质 生理热价 耗O2量 产生的OO 氧的热价 (kJ/g) (L/g) (L/g) (kJA) 呼吸商 淀粉 17.61 0.83 0.83 21.19 葡萄糖 13.15 0.75 0.75 20.98 脂肪 38.52 1.43 19.75 蛋白质 18.42 0.96 0.77 19.26 0.81 衰72非蛋白呼吸商和氧的热价 非蛋白呼吸商 氧的热价k(kal)O2 氧化的糖%:氧化的脂肪% 0.71 1962(4.69 0:100 0.75 1984(4.74) 15.6:84.4 0.80 20.10(4.801) 33.4:66.6 0. 20.15(4.813) 36.9:63.1 20.20(4.825) 40.3:597 0 20.26(4.838) 43.8:56.2 0 20.31(4.850) 47.2:52.8 0.85 20.36(4.862) 50.7:493 0.86 20.41(4875) 54.1:45.9 0.87 20.46(4.887) 57.5:42.5 20.62(4.924) 67.5:32.6 20.87(4985) 84.0:16.0 1.00 21.13(5.047) 100.0:0
Energy Expenditure During Different Types of Activity for a 70-Kilogram Man C glories Form of Activity per Hour Sleeping 65 Awake lying still 77 Sitting at rest Standing relaxed 105 Dressing and undressing l18 ypewriting rapidl 140 Walking slowly (2.6 miles per hour) 200 Carpentry, metalworking, industrial painting 240 Sawing wood 480 Swimming 500 Running(5.3 miles per hour) 570 Walking up stairs rapidly 1100 Extracted from data compiled by Professor M. S Rose
Factors that affect the metabolic rate 1. Exercise Exercise produces an increase in metabolic rate 2. Ingestion of food Increase metabolic rate The specific dynamic action of protein 3. Emotional state 4. Environmental temperature 20-30c have stable metabolic rate <20 or >30C. metabolic rate is increased 5. Other factors(Sleep, sex, etc
Factors that affect the metabolic rate 1. Exercise Exercise produces an increase in metabolic rate 2. Ingestion of food Increase metabolic rate The specific dynamic action of protein 3. Emotional state 4. Environmental temperature 20-30 °C have stable metabolic rate < 20 or >30°C , metabolic rate is increased 5. Other factors (sleep, sex, etc.)