Question

Which of following outcomes can the correct type of aerobic training produce?
The proportion of fat that is used for fuel decreases versus carbohydrate
Increasing the anaerobic threshold to produce more lactic acid at lower intensity
Exercise performance can be sustained at progressively higher intensity levels

Answer 1

The correct type of aerobic training can indeed produce several beneficial outcomes, primarily enhancing the efficiency and capacity of the aerobic energy system. Let's analyze the outcomes you mentioned:

1. **The proportion of fat that is used for fuel decreases versus carbohydrate**: This statement is generally **not correct**. Proper aerobic training usually increases the body's ability to oxidize fat as fuel, especially at submaximal intensities, while also improving overall energy metabolism.

2. **Increasing the anaerobic threshold to produce more lactic acid at lower intensity**: This statement is also **not correct**. Aerobic training generally aims to increase the anaerobic threshold, which allows an athlete to perform at higher intensities before accumulating lactic acid. The goal is to produce less lactic acid at given intensities, allowing for more sustained performance.

3. **Exercise performance can be sustained at progressively higher intensity levels**: This statement is **correct**. Aerobic training enhances cardiovascular fitness, muscular endurance, and metabolic efficiency, which allows individuals to maintain higher intensities for longer durations without fatigue.

In summary, the outcome that can be produced by the correct type of aerobic training is: **Exercise performance can be sustained at progressively higher intensity levels**.