What affects metabolic rate?

Your metabolic rate is influenced by many factors – including age, gender, muscle-to-fat ratio, amount of physical activity and hormone function.

What are the factors that affect metabolic?

Here are ten factors that affect BMR and metabolism:

  • Muscle mass. The amount of muscle tissue on your body. …
  • Age. As you get older, your metabolic rate generally slows. …
  • Body size. …
  • Gender. …
  • Genetics. …
  • Physical activity. …
  • Hormonal factors. …
  • Environmental factors.

What causes an increase in metabolic rate?

In an average man under resting conditions, heat production is of the order of 50 W m2 body surface area or 80 W total, but increases of metabolic rate occur because of food consumption, exercise and other factors. In addition, an increase in metabolic rate is found when there is a rise of body temperature.

What affects metabolic rate GCSE?

As a general rule, the greater the mass of an organism the higher that organism’s metabolic rate is. Organisms with high metabolic rates require more efficient delivery of oxygen to cells. However, BMR is higher per unit of body mass in small animals compared to larger ones.

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What is your metabolic rate?

Metabolic rate is the rate at which your body burns calories. You can separate the types of calories your body burns into two categories: resting calories or activity calories. While you’re just sitting on your couch or at your desk working, your body is burning a certain amount of baseline calories.

What are metabolic issues?

Metabolic syndrome is a cluster of conditions that occur together, increasing your risk of heart disease, stroke and type 2 diabetes. These conditions include increased blood pressure, high blood sugar, excess body fat around the waist, and abnormal cholesterol or triglyceride levels.

What causes a slow metabolism?


A shift in your hormones can put the brakes on your body’s energy use. That can make you tired. Some conditions, like an underactive or overactive thyroid and diabetes, are hormonal diseases that affect your metabolism. Stress also releases hormones that can trigger a slow-down.

How does body size affect metabolic rate?

Among endotherms (animals that use body heat to maintain a constant internal temperature), the smaller the organism’s mass, the higher its basal metabolic rate is likely to be. The relationship between mass and metabolic rate holds true across many species, and even follows a specific mathematical equation.

What are signs of a high metabolism?

The following are some of the most prevalent signs of a fast metabolism:

  • Difficulty gaining weight.
  • Anemia.
  • Difficulty maintaining the desired weight.
  • Frequent sweating.
  • Being energetic or hyperactive.
  • A faster heart rate.
  • Increased breathing.
  • High body temperature even when you are not doing any activity.

How does temperature affect metabolic rate?

As temperature increases, the rate of metabolism increases and then rapidly declines at higher temperatures – a response that can be described using a thermal performance curve (TPC).

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How is metabolic rate determined?

Calculate Basal Metabolic Rate

Men: BMR = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm) – (5.677 x age in years) Women: BMR = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) – (4.330 x age in years)

What is metabolism in biology GCSE?

Metabolism is the term used for all the chemical reactions that go on inside an organism’s body. These reactions build up molecules, and break them down. They are controlled by enzymes.

What are two things that can affect your caloric needs?

Calorie requirements depend on six major factors that affect it. These factors are gender, age, weight, basal metabolic rate, lean body mass and daily activities. Determining the factors that affect daily caloric intake give you a clear idea of what your daily calorie needs are.

Can you increase your BMR?

The key is to push yourself. High-intensity exercise delivers a bigger, longer rise in resting metabolic rate than low- or moderate-intensity workouts. To get the benefits, try a more intense class at the gym or include short bursts of jogging during your regular walk.