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# BMR, VO 2 max, Lactate Threshold

BMR, VO 2 max, Lactate Threshold. Applications of Metabolism &amp; Respiration. Basal Metabolic Rate. metabolic rate = the amount of energy consumed by an organism in a given time basal metabolic rate (BMR) = the minimum amount of energy on which an organism can survive.

## BMR, VO 2 max, Lactate Threshold

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1. BMR, VO2 max, Lactate Threshold Applications of Metabolism & Respiration

2. Basal Metabolic Rate • metabolic rate = the amount of energy consumed by an organism in a given time • basal metabolic rate (BMR) = the minimum amount of energy on which an organism can survive

3. BMR and Age(Image from:http://www.vrp.com/neuroendocrine-support/)

4. Measuring BMR • amount of thermal energy lost measured using a Benzinger calorimeter • measurement of body surface area (BSA) by encasing person in wax mould • …or using the equation: BSA = m0.425 x h0.725 x 0.007184 • …or just using a nomogram

5. Nomogram(Image from: http://www.manuelsweb.com/ped_dose_nomo.htm)

6. BMR questions (p.112) 1. Why is BSA used in the determination of BMR? 2a. Use the BSA equation to determine the body surface area of a teenager whose mass is 78kg and height is 1.70m. Use the nomogram in Figure 27 to check your answer. 2b. Calculate the teenager’s BMA as he dissipates 439 kJ of thermal energy in 1.5 hours.

7. BMR questions (p.115) 18a. Distinguish between metabolic rate and basal metabolic rate. 18b. Explain how and why metabolic rate changes as we grow older.

8. Exercise Physiology • study of the body’s responses to exercise • aerobic fitness = the measure of the ability of the heart, lungs, and bloodstream to supply oxygen to the cells of the body during physical exercise

9. VO2 max(Image from: http://nyvelocity.com/content/coachingfitness/2007/lactate-and-vo2-max-test-cadence) • maximum oxygen consumption (VO2 max) = the maximum volume of oxygen in mL, that the cells of the body can removed from the bloodstream in one minute per kg of body mass while the body experiences maximal exertion