Question

1) Imagine a recreationally active individual who has trained over several months to participate in a 10K race. They anticipate (based on their training times) that the 10K distance will take them ~60 minutes to complete. The race will take place on a cool autumn day, and the individual expects to be performing at ~50% of their maximal aerobic capacity. a. What would be the predominant energy production method, Aerobic, or Anaerobic? Aerobic Name 3 bioenergetic pathways that are active for the majority of this activity? b. As the duration of the race goes on, what energy substrate would be contributing more and more (ie, CHO, Protein, or Fat)? c. What would happen to blood lactate concentrations during the race? d. What if instead of a cool autumn day at 50% of their capacity, this athlete raced in the middle of a hot summer at ~80% of their maximal aerobic capacity? What would happen to oxygen consumption and lactate during this race? e. Immediately following the race, what happens to the athlete’s oxygen consumption rates, and why?

Answer 1

Q. No. a. Answer :

The predominant energy production method is " aerobic ".

Because here the person is doing aerobic exercise, in these the persons need more energy, it will come from carbohydrates and proteins, these carbohydrates and proteins will metabolizes taken place while presence of air.

So the production of energy by aerobic method.

3 bio energetic pathways are

1. Phosphagen pathway,

2. Glycolytic pathway,

3. Oxydative pathway,

These 3 pathways are active for the majority of activities.

Q. No. b. Answer :

As the duration of the race goes on the energy substrate would be contributing more and more by Carbohydrates,

Because carbohydrates are primary source of energy.

Then proteins.

And then fats.

Q. No. c. Answer :

Blood lactate concentration levels was increases during in the race, because during race the peoples need more oxygen levels, for that faster breath may develops, and the hypoxia may taken place, so increased hydrogen ions occumulation leads to acidity may taken place in intracellular place.

Q. No. d. Answer :

The oxygen consumption rate will be increases during in the race and lactic acid levels also increases.

Q. No. e. Answer :

Immediately following the race the athletic oxygen consumption rate is increases through by increasing respiratory rate, because the cells utilized all the energy so that the cells need more oxygen levels so that the breathing rate will be increases.