1. 1 pt. During a marathon run (26.2 mile) the body depends on aerobic and anaerobic glycolysis and on oxidation of fats for energy. However, energy derived from carbohydrates occurs faster and is done first.
a) For running at any speed the muscles require about 110 cal/mi. What is the total amount of energy needed to run a marathon (express in kJ)?
b) The average human (150 lb total weight and leg muscle 21% of total weight) has about 13 g of available carbohydrates (as glucose/glycogen) stored in leg muscle. If that is used in anaerobic glycolysis, how much energy is produced? Is that enough to complete the marathon?
c) If the 13 g glucose/glycogen were metabolized through aerobic glycolysis, what energy is produced? Is that enough to complete the marathon?
d) For most runners, a âWALLâ is hit at about 2/3 to 7/8 of the way through the marathon. The wall is immense fatigue that can slow the pace of the run. What do you think might be the physiological reason for hitting the wall.
e) Elite marathoners usually do not have a problem with the wall. What factors can contribute to their efficient energy production?
1. 1 pt. During a marathon run (26.2 mile) the body depends on aerobic and anaerobic glycolysis and on oxidation of fats for energy. However, energy derived from carbohydrates occurs faster and is done first.
a) For running at any speed the muscles require about 110 cal/mi. What is the total amount of energy needed to run a marathon (express in kJ)?
b) The average human (150 lb total weight and leg muscle 21% of total weight) has about 13 g of available carbohydrates (as glucose/glycogen) stored in leg muscle. If that is used in anaerobic glycolysis, how much energy is produced? Is that enough to complete the marathon?
c) If the 13 g glucose/glycogen were metabolized through aerobic glycolysis, what energy is produced? Is that enough to complete the marathon?
d) For most runners, a âWALLâ is hit at about 2/3 to 7/8 of the way through the marathon. The wall is immense fatigue that can slow the pace of the run. What do you think might be the physiological reason for hitting the wall.
e) Elite marathoners usually do not have a problem with the wall. What factors can contribute to their efficient energy production?
Related textbook solutions
Basic Chemistry
Principles of Chemistry Molecular Approach
Principles of Chemistry Molecular Approach
Chemistry: Structure and Properties
Chemistry: A Molecular Approach
Chemistry: A Molecular Approach
Principles of Chemistry: A Molecular Approach
