Asked by: Ardella Hopwood
medical health lung and respiratory health

What is the similarity and difference between RER and RQ?

Last Updated: 8th March, 2020

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1. Respiratory quotient (RQ) is the proportion of CO2 volume generated to the O2 volume consumption at cellular levels. 2. Respiratory exchange ratio (RER) is the proportion of CO2 volume generated to the O2 volume consumption by using expelled air in the calculation.

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In this way, what is the difference between RER and RQ?

RQ and RER are two different scientific methods of measuring the type of metabolic fuel the body is using to produce energy. RQ is a direct measurement taken from the blood and RER in an indirect measurement taken through the breath. RQ is the ratio of CO2 production (Vco2) and O2 consumption (Vo2) in the tissues.

Furthermore, what is an RQ value? Definition. The respiratory quotient (RQ) is the ratio of CO2 produced to O2 consumed while food is being metabolized: RQ = CO2 eliminated/O2 consumed. Most energy sources are food containing carbon, hydrogen, and oxygen. Examples include fat, carbohydrates, protein, and ethanol.

what does an RER of 1.00 indicate?

The respiratory exchange ratio (RER) is the ratio between the amount of carbon dioxide (CO2) produced in metabolism and oxygen (O2) used. A value above 1.0 cannot be attributed to the substrate metabolism, but rather to the aforementioned factors regarding bicarbonate buffering.

What does a high RER mean?

A high RER indicates that carbohydrates are being predominantly used, whereas a low RER suggests lipid oxidation (Simonson and DeFronzo, 1990; Pendergast et al.

Related Question Answers

Tanesha Navacerrada

Professional

How do you work out RER?

(Resting Energy Requirements or RER), which can be calculated by multiplying the animal's body weight in kilograms raised to the ¾ power by 70, for example, a 10kg (22lb) adult neutered dog of healthy weight needs RER = 70(10kg)3/4 ≈ 400 Calories/day. One also can use the charts below to estimate resting calorie needs.

Kalin Benayas

Professional

What factors affect RER?

The major determinants of resting RER included muscle glycogen content, training volume, proportion of type 1 fibers, [FFA] and [lactate], and %dietary fat intake (adjusted r(2) = 0.59, P < 0.001).

Cheikhouna Tsarkov

Professional

Is a high respiratory quotient good?

High respiratory quotient: Lipogenesis. Under typical metabolic conditions with stable respiratory function, the range of RQ in human metabolism is approximately 0.7 to 1.0. A value of 1.0 is consistent with pure carbohydrate oxidation, whereas a value of 0.7 is consistent with pure fat oxidation.

Dalma Grajera

Explainer

What is RER in biology?

Rough endoplasmic reticulum (RER), series of connected flattened sacs, part of a continuous membrane organelle within the cytoplasm of eukaryotic cells, that plays a central role in the synthesis of proteins. RER occurs in both animal and plant cells.

Arik Rodeja

Explainer

Why does RER increase?

As the intensity of the exercise increases and carbohydrates become the dominant or primary fuel, the respiratory quotient and the RER increase to between 0.9 and 1.0. Because RER reproducibly increases during exercise, it is considered a parameter that can document maximal effort.

Odulia Ugarte

Explainer

What does RER mean in French?

Réseau Express Régional

Trond Danisch

Pundit

Why is respiratory quotient less than 1?

Respiratory quotient is equal to unity if carbohydrates are the respiratory substrate and the respiration is aerobic. RQ Less than Unity: RQ is less than one when respiration is aerobic but the respiratory substrate is either fat or protein. RQ is about 0.7 for most of the common fats.

Vikas Somasundara

Pundit

What is the importance of RQ in physiology?

The respiratory quotient (RQ) measures the ratio of the volume of carbon dioxide (Vc) produced by an organism to the volume of oxygen consumed (Vo). This is represented by the following equation: This quotient is useful because the volumes of CO2 and O2 produced depends on which fuel source is being metabolized.

Haitam Seco De Herrera

Pundit

What units is RER measured in?

The Respiratory Exchange Ratio (RER) is defined as VCO2 produced divided by VO2 consumed (where V is volume).

Zihao Hockendorff

Pundit

How do you calculate vco2?

The equation for calculating absolute VCO2 is: VCO2 (mL/min) = (VE x FeCO2) – (VI x FiCO2). "VE" stands for the volume of air expired in mL/min, "VI" represents the volume of air inspired in mL/min, "FeCO2" stands for the fraction of CO2 in expired air and "FiCO2" stands for the fraction of CO2 in inspired air.

Marietta Alpuente

Pundit

What causes EPOC?

EPOC refers to the elevation in metabolism (rate that calories are burned) after an exercise session ends. The increased metabolism is linked to increased consumption of oxygen, which is required to help the body restore and return to its pre-exercise state.

Manoela Langridge

Teacher

What is maximal exercise?

A maximal exercise test is one that is performed with progressively increasing workloads up to limiting fatigue and/or dyspnea caused by exhaustion of the capacity for adaptation of the patient's cardiovascular system.

Crista Harm

Teacher

What is a metabolic cart?

The metabolic cart essentially measures the oxygen consumed and the carbon dioxide produced by the patient and then calculates (using the modified Weir equation) the energy expenditure for the patient.

Anila Ottl

Teacher

How do you calculate energy expenditure in kcal min?

Multiply 2 L/min by 5 kcal/L. Your client is burning 10 kcal/min. To get total kcal burned during exercise, simply multiply 10 by the total number of minutes of exercise.

Ermelinda Weihs

Teacher

What does indirect calorimetry measure?

Indirect calorimetry is a technique that measures inspired and expired gas flows, volumes and concentrations of O2 and CO2. allows measurement of oxygen consumption and carbon dioxide production. non-invasive and accurate. the equipment used is also known as a metabolic cart.

Claudina Uricher

Reviewer

What is substrate utilization?

In healthy subjects, substrate utilization during rest is highly dependent on carbohydrate availability. During exercise, changes in substrate utilization are highly influenced by exercise duration and intensity. The longer the time spent exercising, the higher the contribution of fat as an energy substrate.

Noura Vaitsekhovsky

Reviewer

What is respiratory quotient in plants?

Respiratory quotient is the measure of moles CO2 evolved to moles O2 absorbed in plant cells. It is 1 when the substrate is carbohydrate but lower for lipids and proteins. The increased CO2 reduced both O2 uptake and CO2 output by about 25–30%, but the RQ was unaffected and remained close to 1.

Florenci Sacko

Reviewer

Why do fats need more oxygen?

In order to be able to break them down, however, it's necessary to balance the input (the carbons and oxygens from carbohydrates or fat) with the output (carbon dioxide). Fats do not contain oxygen (in the fuel-part of the molecule), and need two additional oxygens per carbon to metabolize aerobically.

Oriana Kieswimmer

Reviewer

What is RQ What is its value for fats?

The value of respiratory quotient depends on the type of respiratory substrate. Its value is one for carbohydrates. However, it is always less than one for fats as fats consume more oxygen for respiration than carbohydrates. The RQ value for tripalmitin is 0.7.