Basal metabolism and energy expenditure at high altitude, Biology

Assignment Help:

Define Basal Metabolism and Energy Expenditure at High Altitude?

The energy and nutrient requirements depend upon total energy expenditure and metabolic rate of the individual. Total energy expenditure (TEE), as you may recall studying in Unit 2, has three components i. e, basal metabolic rate (BMR), diet induced energy expenditure and expenditure related to activities. Short-term measurements or gas exchange during field studies suggest that altitude hypoxia increases BMR. Some studies show these acute increases (20-30%) to be sustained for 1-2 weeks while others show elevation to be maintained throughout a three week stay. The decline in BMR with acclimatization seems to be the result of an inadequate energy intake and a decrease in metabolically active tissue that accompanies weight loss. The decrease in metabolic rate is expected to be approximately 20-25 Kcal /dl kg lean tissue lost. Finally, the stress of high altitude (HA) decreases over a period of time as indicated by a decrease in the epinephrine levels in both men and women. 

Increased energy expenditure ranging from 6.9 to 25% has been reported. As regards the energy cost of various activities under stationary conditions, there is no variation as compared to the sea levels. Increased energy expenditure may be due to the heavier load carried by the troops, as cold protective garments and efforts in walking in snow bound hilly terrain.


Related Discussions:- Basal metabolism and energy expenditure at high altitude

Plants of estuary, Plants of Estuary The plants of the estuary are of ...

Plants of Estuary The plants of the estuary are of four basic types: Phytoplankton, Marginal marsh vegetation, Mud-flat algae and Epiphytic plants

Reproduction, am not do erection,am sufferin from epididyme

am not do erection,am sufferin from epididyme

What are the chemical requirements of implant materials, What are the Chemi...

What are the Chemical requirements of implant materials It must withstand corrosion by body fluids It should not have any direct or indirect negative effects on the surround

Describe other concerns in congenital heart disease, Describe Other Concer...

Describe Other Concerns in Adults with Congenital Heart Disease ? Infective endocarditis prophylaxis: The standard guidelines for infective endocarditis prophylaxis should be

Solitary and colonial forms, Solitary and Colonial Forms Animals may l...

Solitary and Colonial Forms Animals may lead their lives either like individuals or in groups. While they exist as individuals, they are termed as solitary, but if they live i

Characteristics of genetically modified foods, Normal 0 false ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

What is the clitellum of earthtworms, Q. What is the clitellum of earthtwor...

Q. What is the clitellum of earthtworms and where it is located? The clitellum is a special region of the annelid constituted by rings (metameres) with reproductive function. I

Explain effect of nutrient supplements on drugs, Explain Effect of Nutrient...

Explain Effect of Nutrient Supplements on Drugs? A nutrient or nutrient supplement can alter the pharmacological action of a drug by enhancing the drug effect or by opposing it

Explain zanamivir, Zanamivir  (Relenza) Started within 2 days after on...

Zanamivir  (Relenza) Started within 2 days after onset of symptoms, this orally inhaled neuraminidase inhibitor can shorten the duration of illness and may decrease the incide

In which area dietitians works, In which area Dietitians works Dietitia...

In which area Dietitians works Dietitians can work in a variety of areas, as already mentioned earlier, many of these are in the  Hospitals or in  the community  as  'Clinical

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd