What does a high RQ mean?

High respiratory quotient is associated with increases in body weight and fat mass in young adults.

Is a higher RQ better?

In summary, the current study has found that a high RQ is predictive of gains in body weight and fat mass over a 12-month period among young adults when compared with individuals with a low/moderate or low-RQ value.

What does high RQ value mean?

Substrate oxidation can be assessed clinically by measuring respiratory quotient (RQ), the ratio of carbon dioxide expired to oxygen consumed during indirect calorimetry. High RQ values are indicative of low fat oxidation and high carbohydrate oxidation (3).

What does an RQ greater than 1 mean?

The RQ is greater than 1 when there is an increase in the deposition of fat formed from carbohydrates entering the body in the diet. (This occurs, for example, in humans during the restoration of normal weight after starvation or a long illness and in animals that are being fattened.)

What does a low RQ value mean?

Thus, an RQ of >1.0 might suggest excessive carbohydrate or calorie provision that can result in increased CO2 production and cause difficulty weaning from mechanical ventilation. A RQ of <0.7 might suggest underfeeding and use of ketones as a fuel source.


What does respiratory quotient tell you?

The respiratory quotient value indicates which macronutrients are being metabolized, as different energy pathways are used for fats, carbohydrates, and proteins. If metabolism consists solely of lipids, the respiratory quotient is approximately 0.7, for proteins it is approximately 0.8, and for carbohydrates it is 1.0.

What is a good respiratory quotient?

Your respiratory quotient is a decimal between 0.7 and 1.0. A normal range is typically around 0.8 - 0.85. The results may also be broken down by macronutrients to represent how much of each substrate your body is deriving its energy from.

Can the respiratory quotient exceed 1?

The respiratory quotient (RQ, carbon dioxide emission/oxygen consumption) is believed to range from 0.7–1 depending on the fuels used for catabolism. However, RQ can rise above 1 when CO2 is released without oxygen consumption.

Which of the following conditions may result in a respiratory quotient greater than one?

the respiratory Quotient is greater than 1 which indicates that anaerobic respiration is taken place.

Why is respiratory quotient less than 1?

The respiratory quotient is less than one in fats.

If the respiratory substrate is fat, then Respiratory quotient of the respiring cells will be less than 1, because the volume of CO2 evolved is quite less in comparison to the volume of O2 being consumed.

Does the respiratory quotient increase during fasting?

Here we analyze literature data to show that the average fasting respiratory quotient typically shifts from approximately 0.80 to 0.90 (indicating a doubling of resting CHO oxidation) in response to a switch in dietary CHO intake (as % energy) from 30 to 60%.

On what factor the respiratory quotient depends?

The respiratory quotient depends upon the type of respiratory substrate used during respiration. When carbohydrates are used as substrate and are completely oxidised, the RQ will be 1, because equal amounts of CO2 and O2 are evolved and consumed, respectively. When fats are used in respiration, the RQ is less than 1.

What is the RQ of anaerobic respiration?

The RQ of anaerobic respiration is infinite. This is because, in anaerobic respiration, the total volume of oxygen consumed is zero as this process occurs in the absence of oxygen and only carbon dioxide is produced. Therefore : RQ = CO2 / O2 = 2/0 = infinity.

What is respiratory quotient What is the RQ for fat?

RQ refers to a respiratory quotient. The respiratory quotient is the volume of carbon dioxide liberated over the volume of oxygen absorbed during respiration. The respiratory quotient also called the respiratory ratio. The respiratory quotient or RQ value of fats is approximately 0.7.

For which of the following compound the value of RQ must be less than 1?

Respiratory quotient or R.Q is defined as the ratio of carbon dioxide evolved to oxygen taken in for respiratory break down of a substrate. The value of R.Q for oxidation of carbohydrates is unity and less than one for oxidation of fats and proteins.

What does respiratory quotient measure quizlet?

STUDY. RQ. A measure of the ratio of carbon dioxide produced and oxygen consumed by an organism per unit of time. Respiration.

What is the RQ during lactic acid fermentation?

Lactic acid fermentation

Respiratory quotient (R.Q): The ratio of volume of carbon dioxide liberated and the volume of oxygen consumed during respiration is known as respiratory quotient.

What is RQ for lactic acid fermentation?

Correct answer is (a) Zero.

What is the RQ value range for aerobic respiration and anaerobic respiration?

Depending upon the substrate being oxidized, RQ values for fresh commodities range from 0.7 to 1.3 for aerobic respiration (Kader 1987; Beaudry et al.

Why is RQ important in COPD?

In patients with COPD, a RQ < 1.0 is desirable since the patient will be exhaling less carbon dioxide [9]. However, no study assessed carbohydrate and fat oxidation separately in this group of patients (with COPD), and this is essential for understanding the energy metabolism of these individuals.

Why RQ value is respiratory substrate dependent?

The carbohydrates have equal numbers of carbon and oxygen in their molecules. When carbohydrates are used as substrate, then the RQ will be 1, because equal amounts of carbon dioxide and oxygen are evolved and consumed. Fats and proteins contain a smaller number of oxygen atoms than carbon atoms in their molecules.

What is the respiratory quotient of glucose?

The RQ of glucose is 1.0; of fat, 0.70; and of protein, 0.79–0.82. An RQ above 1.0 usually reflects a nonsteady state of hyperventilation, which is an inaccurate test situation.

What is the respiratory quotient for carbohydrates?

Respiratory Quotient (R.Q.) is defined as the ratio of carbon dioxide released and the oxygen used during the process of respiration. The respiratory quotient or RQ value of carbohydrates is approximately 1.0. RQ = 1.0.

What is the RQ of Tripalmitin?

For example, oxidation of tripalmitin, a common fat, gives an RQ of 0.7: (6.10)C51H98O6 + 72.5O2 → 51CO2 + 49H2O (51CO2/72.5O2) = 0.7. In plants such as the succulents that oxidize organic acids, the RQ may be considerably more than 1.

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