During a period of sustained moderate intensity exercise, a decrease in Respiratory Exchange Ratio, suggests what? 1 An increase in the proportion of lipid used as a metabolic fuel 2 An increase in the amount of glucose used as a metabolic fuel 3 An increase in blood Lactic Acid 4 A decrease in blood glucose levels

The respiratory exchange ratio (RER) is the ratio of CO2 generation to oxygen intake during…

Answered: During a period of sustained moderate…

Lifetime Physical Fitness & Wellness

15th Edition

ISBN:9781337677509

Author:HOEGER

Publisher:HOEGER

Chapter1: Physical Fitness And Wellness

Section: Chapter Questions

Problem 9AYK

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I do not know which diagram is for this question but please see and answer this question. I need help Question: Which of the following statements regarding carbohydrate and fat metabolism during exercise is true? A: plasma glucose contributes more to energy provision than does muscle glycogen at 85% Vo2 max B: the utilization of fat as an energy source is greatest at the highest exercise intensities e.g. greater than 85% VO2 max C: carbohydrate supplementation during moderately intense exercise (eg. 70-80% VO2 max) can help one to exercise longer until the onset of fatigue D: the greatest amount of glycogen is used at around 65% VO2 max
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Which of the following statements is TRUE, regarding a period of constant moderate- intensity exercise? More that one statement is TRUE. The increase in Respiratory Exchange Ratio occurring at the beginning of a period of moderate-intensity exercise, reflects the increase in metabolic rate. The decrease in Respiratory Exchange Ratio that can occur during a period of moderate-intensity exercise, reflects the decreased availability of metabolic fuels. O If exercise is continued, at a constant moderate-intensity, metabolism may adjust to increase the proportion of carbohydrate and decrease the proportion of lipid, used as metabolic fuel. At the onset of exercise, the increase in metabolic demand is fueled by an increase in Lipid metabolism. At the onset of exercise, the increase in metabolic demand is fueled by "anaerobic" metabolism. Measured Oxygen consumption underestimates true metabolic rate. The products of anaerobic metabolism generated at the beginning of a period of exercise, are…
The most significant determinant of basal metabolic rate is: O age sex total muscle mass versus fat mass O activity levels

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	1 An increase in the proportion of lipid used as a metabolic fuel
	2 An increase in the amount of glucose used as a metabolic fuel
	3 An increase in blood Lactic Acid
	4 A decrease in blood glucose levels