How to achieve energy balance and body weight regulation
When a person gains weight, or fails to lose weight is usually a matter of exercising too little and eat too? “Unfortunately, not all that simple. Many factors must be considered when dealing with the metabolism of the body and its response to diet and exercise,” warns National Training Institute for Life in his book, Fit Facts .
Even if you can not change your genetic makeup, you have some way to control energy and borrowing costs. Many people get hung up on trying to achieve the perfect combination of carbohydrates, fats and proteins, and ignore the basic tenet of caloric balance.
Key points
• The excess energy (food) intake results in energy storage (fat gain). A deficit will lead to a reduction of body fat.
• During the diet, people rarely miss the amount of weight expected.
• This can be explained by changes in metabolic rate because of changes in food consumption, and should be factored into the weight loss equation.
• Diet and exercise are needed long-term weight loss. Crash diets rely metabolic adjustments such as energy resting decreased expenses, reduced levels of hormones satiety, and increased hunger hormones. These changes antagonize the efforts towards weight loss. Regular exercise remains the main predictor of long-term weight loss maintenance.
Balancing energy. Most people understand the concept of energy balance, to signify that the amount of energy that the body must equal the amount of out of the body (for example, the calories consumed must equal the amount of calories burned). If more energy goes out more, weight gain happen, but if more energy than leaving you in, weight loss occurs. But this is not as black and white as it seems. There are other factors such as our metabolic rate, to take into account.
The metabolic rate. The basal metabolic rate (BMR) refers to the bare-minimum amount of energy the body with which it needs support when you awake and resting, and largely depends on the percentage of lean body mass (muscle and bone). The BMR uses about 60 percent of calories burned each day, and is the largest single component of energy balance.
By increasing our level of lean muscle mass, you burn more calories, period. Even when we are at rest.
Energy expended during the exercise / activity. The energy used depends on the frequency, intensity and duration of exercise, and can carry from 10 to 30 percent of total calories burned each day. This factor is the most readily modifiable component of our daily energy expenditure, for increasing physical activity, is one of the factors that will have a greater contribution to effective weight loss.
Adaptive energy expenditure. Adaptive energy expenditure is a completely understood. However, refers to our bodies’ ability to modify, adapt, or to stress or change. Since our body is extremely adaptable, is able to respond to undesirable conditions decreasing or increasing the amount of energy required for any activity. An example might be undernourished people in developing nations, that they can barely survive on a bowl of rice a day. Their bodies are partially responded to shortages of food to seriously conserve energy and lower the metabolic rate.
Balance food, energy, exercise, which will lead to weight loss
Factors that affect the energy balance
The factors that regulate the human energy intake and expenditure are many and complex. The biological unit of eating is influenced by the hypothalamus and chemical signal from the nervous system. These “organic” the signals are coordinated with psychosocial factors (culture), behavioral factors (snacking during TV commercials), and environmental factors (portion). The units resulting from eating stems from the complex integration of many internal and external factors.
A stable weight depends on a balance between the energy you get from food and energy you use. You can use the energy during the day in three ways:
Energy spent during rest (basal metabolism) Energy used to break down food (thermogenesis) Energy used during physical activity basal metabolism accounts for about two thirds of the energy bill. The body normally uses this energy to keep the temperature constant and the muscles of your heart and intestine work. Thermogenesis represents about 10% of energy expenditure.
When a person consumes more calories than their energy use, the body stores the extra calories in fat cells. Fat cells act as reservoirs of energy. They grow or shrink depending on how people use energy. If people do not balance energy input and output to eat right and exercise, fat can build. This can lead to weight gain.
When an input of energy is equal to energy production, there is no expansion of fat cells (lipocytes) to accommodate excess. When you take in more calories you use the extra fat is stored in your lipocytes and you start to accumulate fat.
Measure of obesity
Obesity is determined by measuring body fat, not just body weight. People may be beyond the weight limit for normal standards, but they are very muscular with low body fat, are not obese. Others may be a normal weight or underweight, but still excessive body fat. These factors and measurements are used to determine whether a person is overweight to a level that threatens their health:
Body mass index (BMI) - a measure of body fat Waist circumference (formed around the waist) Waist-hip ratio of skin fold measurement (anthropometry) The presence or absence of other risk factors for disease (such as smoking, high blood pressure, unhealthy cholesterol levels, diabetes, and relatives with heart disease) A person’s disease risk factors and their BMI may be the most important components in determining health risks with weight .
There are ways to measure energy expenditure directly, but most are expensive and time consuming. You can get a rough estimate of your daily calorie needs to walk through the following steps instead. The total number of calories you burn each day can be divided into three main sub-baseline calorie needs, calories for physical activity, calories and the thermal effect of food. Basal calories cover your energy needs a rest and keep vital organs like the brain, heart, lungs, kidneys, liver and functioning. Most (about 60%) of total daily calories should meet your energy needs baseline. You can estimate your baseline calorie needs by multiplying your healthy body weight in pounds by 10:
Healthy body weight (lbs.)? 10 = basic caloric needs
Example:
Sandra currently weighs 175 lbs. and decided that her comfortable, healthy weight is about 160 lbs. You walk for 30 minutes two to three times a week and has a sedentary job:
160 pounds? 10 = 1600 calories for the needs basal
Most people also need calories per day of business if not for the financial year, then for the shower, getting dressed, taking care of children, or go to work. If you are sedentary or minimally active, the calories you need for physical activity compose about 30% or less of its total daily requirement. Very active individuals can spend up to 50% or more of their total daily calories on physical activity! Add calories for physical activity to your daily total by multiplying your baseline calories from one of the following factors:
? 1.2 if you are sedentary
? 1.3 if you are slightly active (easy walking, swimming, mountain bike or a couple of times a week, or your work involves activity light)
? 1.4 if you are moderately active (exercise planned several days of the week at a moderate intensity challenging)
? 1.5 or more if you are very active (exercise more intense day of the week or a physically demanding job, for example, construction worker)
Basal caloric needs? Activities factor baseline = + calories calories for physical
task
Example, continued:
1600 calories x 1.3 = 2080 calories for basic needs and physical activity
The final compartment of energy expenditure is the thermal effect of food. These are the calories the body uses to process the food we eat. This is only a small percentage (10 or less) of total daily calorie needs. Add thermal effect of food calories to the total by multiplying your answer from the earlier 1.1:
(Basal calories + calories per exercise) X 1.1 = Total daily calories
Needs
Example, continued:
2080 calories x 1.1 = 2,288 calories per day for weight maintenance
If Sandra wanted to lose weight gradually and healthy, you could increase your physical activity and reduce your calorie intake to about 2,000 calories a day.
A pound of fat equals 3,500 calories. Although it seems logical that cutting 500 calories a day should result in loss of a pound of fat per week (7 days x 500 calories = 3500 calories), this is not necessarily the case. Research has shown the following points;
1. Weight loss and weight gain is very impressed by the individuality. In studies with twins and random unconnected studies, participants were overfed for a certain period of time, weight gain was as much as 10 times between the various participants.
2. Many studies that require participants to self-calories intake report shows that people often underestimate the actual amount of calories consumed.
3. It is assumed that individuals like losing weight, is mainly fat weight. The truth is that during underfeeding, lean body mass and decreased body can decrease your metabolic rate as a protection mechanism.
4. Humans are more prone to weight gain of weight loss. During overfeeding, many factors affect metabolism, including genetics. While genetic factors play a role in energy balance, the exact nature is unknown.
5. In response to reduced-calorie diet, your body metabolism decreases and increases hunger, usually associated with weight regain.
Weight loss tips
No single approach works for everyone.
1. Establish realistic long-term objectives. Using mirrors, Reject as milestones for progress.
2. Calories do count. To lose weight you must spend more than they consume.
3. Change your standards; create lifestyle changes.
4. Moderation is key. In general, the more coherent and more you lose weight, longer remain outside. If you are trying to lose weight, to create a small deficit calories (200 calories a day), making smart food choices or reduce the size of the service, as opposed to eliminating meals. For example, drinking water or a diluted fruit drink is an easy way to make minor dietary changes.
5. Move. Get at least 30 minutes of vigorous activity at least 5 days a week. In addition, park away from buildings, take the stairs, bring food from the supermarket, etc.
