Resting metabolic rate (RMR) can be affected by
• age.
• Daily Values.
• appetite.
• hunger.
Resting metabolic rate (RMR) refers to the amount of energy or calories your body consumes while at rest, in order to maintain basic bodily functions such as breathing, circulating blood, and regulating body temperature. Several factors can affect RMR, including age, Daily Values, appetite, and hunger. Here's how each of these factors can influence RMR:
1. Age: As we age, our metabolic rate tends to decrease. This is mainly due to a decrease in muscle mass and an increase in fat mass. Muscle is more metabolically active than fat, so as we lose muscle with age, our RMR decreases.
To calculate RMR, you can use the Harris-Benedict equation, which takes age into account along with other factors like gender and weight.
2. Daily Values: Daily Values, also known as recommended daily allowances, are nutrient intake recommendations established by various health organizations. These values provide guidance on the amount of nutrients needed for optimal health, including energy intake. Following or exceeding Daily Values can help ensure that your body receives the necessary energy to maintain a healthy RMR.
3. Appetite: Appetite refers to the desire or urge to consume food. It can be influenced by various factors, including hormonal signals, psychological factors, and external cues. If your appetite is consistently higher, leading to increased food intake, it can potentially raise your RMR. This is because the process of digesting, absorbing, and metabolizing food requires energy.
4. Hunger: Hunger is the physical sensation or feeling of needing to eat. It is typically driven by a need for nourishment and can be influenced by factors such as blood sugar levels, stomach contractions, and hormonal signals. Being in a state of hunger does not directly impact RMR. However, prolonged periods of caloric restriction or fasting can lead to a decrease in RMR as a response to conserve energy.
To accurately determine your RMR, it is best to consult a professional, such as a registered dietitian or a healthcare provider. They can provide personalized guidance and use specialized techniques like indirect calorimetry to measure your individual metabolic rate.