BMR+Harris-benedict equation: case of negative output?

Asked by: Jennifer Rogers

How is BMR Harris-Benedict calculated?

To calculate your BMR, you would usually use the Harris-Benedict equation:

1. For women, it’s: BMR = 655.1 + (9.563 * weight in kg) + (1.850 * height in cm) – (4.676 * age) .
2. For men, the formula is: BMR = 66.5 + (13.75 * weight in kg) + (5.003 * height in cm) – (6.75 * age) .

What three characteristics are needed to predict an individual’s BMR using the Harris-Benedict formula?

To accomplish this aim, basal energy requirements, or resting energy expenditure (REE), often are estimated using prediction formulas such as the Harris-Benedict (HB) formula [1]. This prediction formula takes into account gender, body weight, height, and age.

How is BMR formula derived?

BMR was derived using three methods: Harris-Benedict equation, Bioelectrical Impedance Analysis and Indirect Calorimetry.

What is the activity factor used in the Harris-Benedict equation?

Harris-Benedict Equation

The multipliers reflect varying levels of activity throughout a one-week period. If you are sedentary and do not exercise, multiply your BMR by 1.2. If you exercise lightly one to three times per week, multiply by 1.375. If you exercise three to five days per week, multiply by 1.55.

Which BMR formula is most accurate?

the Mifflin-St Jeor Equation

Of these equations, the Mifflin-St Jeor Equation is considered the most accurate equation for calculating BMR with the exception that the Katch-McArdle Formula can be more accurate for people who are leaner and know their body fat percentage.

How accurate is Harris-Benedict equation?

Of the predictive equations tested, the Harris-Benedict equation (mean difference: -14.8 kcal/day, RMSPE: 195.8 kcal/day, mean % difference: 0.1%) was the most accurate and precise, but accuracy in prediction of the equation were only 35.7%.

What are the factors affecting basal metabolic rate?

Here are ten factors that affect BMR and metabolism:

• 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.

Which of the following factors lowers the BMR?

The following factors decrease the metabolic rate: Age: Lean body mass diminishes with age, slowing the BMR; Body composition (gender): The more fat tissue, the lower the BMR (typically women); Stresses: Stresses (including many diseases and certain drugs) raise the BMR; Fasting/starvation: Fasting/starvation lowers …

What do all of the variables used in the Harris Benedict equation have in common?

All of the variables used in the equations have a sound physiologic basis for use in predicting BEE. Supplemental data from the Nutrition Laboratory indicates that the original equations can be applied over a wide range of age and body types.

How do you add activity to BMR?

If you are moderately active (moderate exercise/sports 3-5 days/week) : Calorie-Calculation = BMR x 1.55. If you are very active (hard exercise/sports 6-7 days a week) : Calorie-Calculation = BMR x 1.725. If you are extra active (very hard exercise/sports & physical job or 2x training) : Calorie-Calculation = BMR x 1.9.

What is negative energy balance?

In negative energy balance, when energy expenditure exceeds intake, the resulting loss in body mass is also accounted for by 60–80 % body fat. It is commonly assumed that energy intake and energy expenditure can be independently modified, through changes in food intake and physical activity, to achieve energy balance.

What does the Harris Benedict equation measure?

basal metabolic rate (BMR)

The Harris Benedict equation is a calorie formula using the variables of height, weight, age, and gender to calculate basal metabolic rate (BMR). This is more accurate than calculating calorie needs based on total body weight alone.

Does BMR include sitting?

Your basal metabolic rate (BMR), on the other hand, represents the number of calories you individually burn a day at rest, or while you’re sedentary. This includes sleeping and sitting.

Does sleeping burn fat?

Summary. People do lose weight during sleep. However, this is mostly due to water loss through breathing and sweating. While individuals do not burn much fat during sleep, sleep is a fundamental component of well-being, and a lack of it can make maintaining a moderate weight more difficult.

How many calories do you burn when you fart?

A popular Internet claim from 2015 said that one fart burned 67 calories, and that farting 52 times a day would burn 1 pound of fat. That claim has since been proved false. But is there any merit to the question? Experts say farting is a passive activity — so it probably doesn’t burn any calories at all.

Do you burn more calories when sleeping or awake?

Now, some researchers have measured the amount of energy we save by sleeping. It turns out, by staying awake all night, we burn about 135 more calories than we do when we’re sleeping, according to the study conducted by researchers at the University of Colorado at Boulder.

Does sweating mean fat burning?

While sweating doesn’t burn fat, the internal cooling process is a sign that you’re burning calories. “The main reason we sweat during a workout is the energy we’re expending is generating internal body heat,” Novak says.

Which sleeping position burns the most calories?

your body burns more calories when you are in deep sleep. Thus, the longer you sleep soundly, the more calories you burn. This is because your brain is most active during REM sleep or deep sleep.

What burns fat while you sleep?

1. Lemon: Although one might think lemons to be acidic because of their sharp and sour taste, this citrus fruit actually has an incredible alkalizing effect on the body. This is great for the health of our liver, which in turns aids digestion, boosts metabolism and burns fat while we sleep. 2.

Does lemon water burn fat?

Lemon water can promote fullness, support hydration, boost metabolism and increase weight loss. However, lemon water is no better than regular water when it comes to losing fat.

What can I drink before bed to melt body fat?

10 Drinks That Burn Fat While Sleeping

• Apple Cider Vinegar. Apple Cider Vinegar is a great drink to help you burn fat while sleeping. …
• Celery Juice. Don’t turn your noses up yet! …
• Turmeric Milk. …
• Grape Juice. …
• Kefir. …
• Aloe Vera Juice. …
• Protein Shake. …
• Ginger Tea.

Does lemon burn fat?

The answer to this is easy: No. Lemons do not have special fat-burning qualities, explains Czerwony. A squeeze of the fruit’s pucker-inducing juice won’t help you squeeze into a smaller pair of jeans. “That mechanism of action is just not there,” says Czerwony.

What causes big stomach in females?

There are many reasons why people gain belly fat, including poor diet, lack of exercise, and stress. Improving nutrition, increasing activity, and making other lifestyle changes can all help. Belly fat refers to fat around the abdomen.

Is coffee good for weight loss?

Chlorogenic Acid stimulates your body to break down fats more efficiently, meaning you lose weight faster. Amazingly, caffeine increases lipase, an enzyme that helps break down fat during digestion.