Question

What occurred to the athlete's resting metabolic rate and fatty oxidation rates over the 14 week time span?

Answer 1

Athletes typically experience an increase in resting metabolic rate and fatty oxidation rates over a 14-week period due to consistent training, increased muscle mass, and their body's adaptation to more efficient fat burning.

Step-by-step explanation:

Over a 14-week time span, an athlete's resting metabolic rate (RMR) and fatty oxidation rates generally increase due to a greater muscle mass that burns more calories compared to body .The metabolic rate refers to the energy expenditure of the body over a certain period. In athletes, with consistent training and increased muscle mass, their RMR will typically be higher compared to non-athletes. This is because muscle tissue requires more energy to maintain than fat tissue. Over a period like 14 weeks of sustained physical activity and potential muscle growth, an athlete's RMR may see an increase. Additionally, athletes often have higher fatty oxidation rates because their bodies become more efficient at burning fat for energy, particularly during prolonged periods of exercise. These changes in metabolic processes are essential for maintaining the increased activity levels of athletes and are a direct reflection of their body's adaptation to consistent and vigorous physical training.

Factors such as age, gender, total body weight, and muscle mass influence an individual's BMR. Since athletes tend to have a higher proportion of muscle mass, their RMR also tends to be elevated. Increased fatty oxidation also implies that athletes can metabolize fat more efficiently, providing energy for the body during rest and exercise. Over the course of 14 weeks, these physiological changes can significantly affect an athlete's metabolism and their capacity to utilize fats as an energy source.

Answer 2

The athlete's resting metabolic rate and fatty oxidation rates over 14 weeks could vary depending on changes in muscle mass, diet, and physical activity. Increases in muscle mass or changes in diet that promote fat metabolism could raise these rates, while decreases in muscle mass or activity could lower them. Additionally, weight loss can lead to physiological changes that may reduce the metabolic rate over time.

Step-by-step explanation:

The question pertains to the changes in an athlete's resting metabolic rate and fatty oxidation rates over a 14-week period. The basal metabolic rate (BMR) is a measure of energy expenditure while at rest in a neutrally temperate environment, in the post-absorptive state. The resting metabolic rate is influenced by several factors, including age, gender, body weight, and muscle mass. As athletes generally possess greater muscle mass, they tend to have higher BMRs.

Over the course of 14 weeks, depending on the athlete's diet, exercise regimen, and changes in muscle mass, both the metabolic rate and fatty oxidation rates may fluctuate. If the athlete maintains or increases muscle mass through resistance training and sufficient protein intake, the BMR may increase. Conversely, a reduction in overall activity or muscle mass could lead to a lower BMR. Similarly, dietary changes can influence fatty oxidation rates; a higher fat, low-carbohydrate diet might increase fatty acid utilization for energy.

Energy not used for activity is stored as body fat, and losing weight typically requires expending more calories than are consumed, leading to the body metabolizing fat for energy. However, as the body adapts to lower energy intake and reduced body weight, there are physiological changes that favor weight regain, potentially leading to a lowering of the metabolic rate over time.