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
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
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question:
Which of the following statements regarding carbohydrate and fat
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
![Maintaining Blood Glucose During Exercise ...
Benefits of Ingesting Glucose.
CARBO
PLACEBO
FATIGUE
3
-60
30
60
90
120
150
180
200
TIME (min)
Subjects cycled at ~70% VO2peak while ingesting either placebo OR 8% CHO beverage.
McConell et. al. Journal of Applied Physiology. 87: 1083-1086, 1999.
PLASMA GLUCOSE (mmol/I)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0d5dd851-de88-467f-bf69-5aa8c869b313%2F5d03d758-be0c-4264-9daa-000ec73f9a60%2Ft5r2ebd_processed.png&w=3840&q=75)
Transcribed Image Text:Maintaining Blood Glucose During Exercise ...
Benefits of Ingesting Glucose.
CARBO
PLACEBO
FATIGUE
3
-60
30
60
90
120
150
180
200
TIME (min)
Subjects cycled at ~70% VO2peak while ingesting either placebo OR 8% CHO beverage.
McConell et. al. Journal of Applied Physiology. 87: 1083-1086, 1999.
PLASMA GLUCOSE (mmol/I)
![Substrate Use During Aerobic Exercise
Romijn et al Am J Physiol 265: E380, 1993
Energy expenditure
(kJ.kg'.min')
Should 65% VO2 max be the target for burning fat and losing weight ???
1.4
1.2
1.0
0.8
0.6
Muscle glycogen
0.4
I Triglycerides
OPlasma FFA
0.2
OPlasma glucose
0.0
25
65
85
% VO2 max
VO2 max = maximal oxygen uptake, or maximal aerobic capacity
17](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0d5dd851-de88-467f-bf69-5aa8c869b313%2F5d03d758-be0c-4264-9daa-000ec73f9a60%2Fmjuu03q_processed.png&w=3840&q=75)
Transcribed Image Text:Substrate Use During Aerobic Exercise
Romijn et al Am J Physiol 265: E380, 1993
Energy expenditure
(kJ.kg'.min')
Should 65% VO2 max be the target for burning fat and losing weight ???
1.4
1.2
1.0
0.8
0.6
Muscle glycogen
0.4
I Triglycerides
OPlasma FFA
0.2
OPlasma glucose
0.0
25
65
85
% VO2 max
VO2 max = maximal oxygen uptake, or maximal aerobic capacity
17
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