Final answer:
The athlete likely engaged in endurance training over the 14 weeks to up-regulate oxidative enzymes and enhance fat utilization. This includes activities like long-distance running, cycling, swimming, or rowing.
Step-by-step explanation:
To up-regulate oxidative enzymes and enhance fat utilization, the athlete likely engaged in endurance training over the 14 weeks. Endurance training includes activities like long-distance running, cycling, swimming, or rowing.
During endurance training, the body adapts by increasing the activity and production of oxidative enzymes, such as those involved in aerobic respiration. This improves the ability of muscles to use oxygen and metabolize fat for energy.
Examples of endurance training for enhancing fat utilization include long-distance running at a moderate pace, cycling at a steady state, or swimming for extended periods. These activities stimulate the body to rely more on fat metabolism, leading to increased utilization of fat as a fuel source.