I can not think of a patient group that indirect calorimetry wouldn't work for. Maybe others can. There might be situations where people are unable or unwilling to tolerate the methods though.
At altitude the percentage of the air that is oxygen is still any 21%, but the air density decreases as air pressure decreases. This means less oxygen enters our lungs per liter of air. Metabolic carts account for this.
Hi @shu-chunhuang7344. I am not familiar with the Weir formula. I quickly looked things up, but did not have time to read it in detail. Based on the Wikipedia page, yes, but take that for what you will. I've pulled the conversion factor I use from various ACSM textbooks and the Compendium of Physical Activities. See citations below. Please let me know what you figure out once you dig deeper on this. Weir Formula Wikipedia Page en.wikipedia.org/wiki/Weir_formula#:~:text=The%20Weir%20formula%20is%20a,VO2%20%2B%201.1%20VCO2) Weir Formula Reference www.ncbi.nlm.nih.gov/pmc/articles/PMC1392602/?page=1 Compendium of Physical Activities page giving the conversion factor I use. sites.google.com/site/compendiumofphysicalactivities/help/unit-conversions?authuser=0
can you use the metabolic cart for lets' say 5 minutes? what is really an ideal time to measure energy expenditure when you measure activities like walking or jogging?
It is common to measure "steady state" VO2 during graded aerobic exercise in using 3 minute workloads. The final 15-60s of the 3 minute workload would be used to determine the individuals VO2 for that intensity. So it does not take long if they are in steady state.
Can you please help me with this question The gross energy intake of Vicky is 4,000kj, the energy content of her faeces and urine are 600kj and 259kj respectively. if her gaseous energy lost is 220kj. calculate her digestive energy intake (DE) and metabolizes energy intake (ME)
Nice ,understandable and informative video . Thanks for this 😊😊
I'm happy it helped.
what patients are eligible to use indirect calorimetry?
I can not think of a patient group that indirect calorimetry wouldn't work for. Maybe others can. There might be situations where people are unable or unwilling to tolerate the methods though.
How you do the background presentetion video format?
The presentation is a screen recorder software. My image is filmed in front of a green screen. Then they are put together using Adobe Premier.
Well done video. Thks for sharing. But isn't there a difference in oxygene available as we go up higher in altitude ?
At altitude the percentage of the air that is oxygen is still any 21%, but the air density decreases as air pressure decreases. This means less oxygen enters our lungs per liter of air. Metabolic carts account for this.
You can also see this video on exercise at altitude for more information: ruclips.net/video/xQgYu4p1hvc/видео.html
I really appreciate that thank you so much
I hope it helped!
Thanks for the video. May I ask how to calculate resting energy expenditure based on V'O2 and V'CO2 in indirect calorimetry?
Hi @shu-chunhuang7344. If you have VO2 in L/min you can just multiply by 5 to get kcal/min burned.
@@VivoPhys Is it a simplied form of Weir formula: 3.9VO2+1.1VCO2 ？
Hi @shu-chunhuang7344. I am not familiar with the Weir formula. I quickly looked things up, but did not have time to read it in detail. Based on the Wikipedia page, yes, but take that for what you will. I've pulled the conversion factor I use from various ACSM textbooks and the Compendium of Physical Activities. See citations below. Please let me know what you figure out once you dig deeper on this.
Weir Formula Wikipedia Page
en.wikipedia.org/wiki/Weir_formula#:~:text=The%20Weir%20formula%20is%20a,VO2%20%2B%201.1%20VCO2)
Weir Formula Reference
www.ncbi.nlm.nih.gov/pmc/articles/PMC1392602/?page=1
Compendium of Physical Activities page giving the conversion factor I use.
sites.google.com/site/compendiumofphysicalactivities/help/unit-conversions?authuser=0
can you use the metabolic cart for lets' say 5 minutes? what is really an ideal time to measure energy expenditure when you measure activities like walking or jogging?
It is common to measure "steady state" VO2 during graded aerobic exercise in using 3 minute workloads. The final 15-60s of the 3 minute workload would be used to determine the individuals VO2 for that intensity. So it does not take long if they are in steady state.
Super interesting 🙌🏻
I'm glad you liked it.
Can you please help me with this question
The gross energy intake of Vicky is 4,000kj, the energy content of her faeces and urine are 600kj and 259kj respectively. if her gaseous energy lost is 220kj. calculate her digestive energy intake (DE) and metabolizes energy intake (ME)
It's probably best you ask your instructor for help.
Sir please make a video on doubled lable water 🙏
That would be an interesting video. Unfortunately it isn't a topic I know much about at this point.
@@VivoPhyshello sir, how about now? It's been 2 years 😊?
Sorry. I don't use this technique. So I doubt I'll ever be able to make a quality video on it.
For some reason the automatic captions think you speak in Vietnamese !?
Nope. Not in my skill set.
Thanks bro
You are welcome!