How Does Exercise Impact Weight Loss?
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Animation description: In this animation, we discuss the concept of physical activity and exercise as they relate to obesity.
In humans there is a fine balance between energy intake and energy expenditure.
Energy intake is in the form of food, and energy expenditure is in the form of the basal metabolic rate and physical activity.
The difference between energy intake and energy expenditure is the net energy balance. If intake exceeds expenditure, then a net positive energy balance occurs.
Energy expenditure depends on a number of factors.
This includes the starting body weight, the basal metabolic rate and physical activity.
With regards to physical activity, there are several key variables including the frequency, intensity, duration and type of activity done.
Let us now examine energy consumption. One honey glazed donut is shown which has approximately 300 kilocalories.
The energy intake from the consumed donut is equal to the energy consumed by moderate walking for 30-60 minutes, at 3.0 miles per hour.
If an individual walks for an hour at 3 miles per hour.
They will expend approximately 300 kilocalories, the same as what was contained in the consumed donut.
If an individual walks daily for one hour at approximately 3 miles per hour. This type of activity would lead to weight loss. This assumes that the individual does not consume any extra calories and has a net negative energy expenditure.
If this activity continues for a period of two to four months, body weight is reduced as depicted.
The initial weight loss is the result of a negative net energy balance.
The negative energy balance is because energy expenditure exceeds energy intake.
After the initial weight loss, the individual continues to do the same type of exercise, that is, 1 hour of moderate walking daily.
The chart depicts changes in body weight over time.
Individuals are surprised and frustrated that his weight is not continuing to decrease despite regular walking.
They have reached a plateau.
The reason behind the weight loss pleateau is that with decreased body weight, the basal metabolic rate also decreases.
When the basal metabolic rate decreases, there is a decrease in total energy expenditure.
If the discouraged individual quits his daily walking exercise. The weight is gained again, at a quicker pace.
The weight is re-gained as a result of a positive energy balance being created.
Energy expenditure is now less since the physical activity has been stopped.
By keeping the same intensity and duration of walking without making any changes in the diet (energy intake) the man would enter a weight maintenance phase.
This is characterised by gaining a small amount of weight.
The weight maintenance is the result of an energy balance being established within the body, where energy intake essentially equals energy expenditure.
If there is no change in energy balance, there will not be any further change in weight.
What must be done to end the weight loss plateau?
Several options exist to maintain a negative net energy balance. These involve either decreasing energy intake or increasing energy expenditure.
Options include: restricting calories further or increasing the frequency, or the intensity or the duration of the exercise.
In summary then, weight loss plateau’s are expected and can only end with continued exercise and a net negative energy balance.
Stopping exercise or increasing calories will lead to weight gain.
If one continues to exercise to maintain a net negative energy balance weight loss will be promoted.
October, November and December– Now you want to really work hard toward your ultimate goal of natural weight loss. But for quite a few of us, a healthy diet is not always followed on a regular basis, if at all.
Personal Training – Use Better Nutrition To Help Yourself Lose Weight
Lose weight easily when you detox your liver before you begin your weight loss program. Chylomicrons are small fat globules that help transport fat after digestion from the small intestine to tissues in the body.
Although the usual suspects in weight gain are poor choices, bad habits, wrong thinking, over-feeding, and so on, there are certain underlying medical issues that can pack up on weight and prevent weight loss.
I’m here to tell you my take on this whole nutrition thing. As everyone knows, I like to keep things simple. I stay with simple stuff. Getting complicated is for the more advanced people, but not me. (Oh, I can hang with the best of them, but I choose not to) Of course, I enjoy talking about fitness/nutrition, and I always can (and will), but for the people that don’t know what to do to start off with, getting to involved and in depth may just shy them away from being healthy, which is something NOBODY in this industry wants, right?
Remember, two (2) persons who undertake the same diet or weight loss program may experience different weight loss results due to a number of factors including, body type, conditioning, metabolism and the body’s level of efficiency when burning fat.
Although it is hard to start and maintain a healthy diet, nothing is impossible if you really want to achieve a healthy mind and body. For starters, it is advisable to mix up food choices from each food group. Eating a large variety of foods and veggies can also serve as a warm up in avoiding the foods that contribute to drastic weight gain. Having a balanced intake of calcium-rich foods, whole grains, and protein-rich products will also keep you in track.
Always be prepared. For example, make sure you have got cans of legumes and beans in your kitchen. These can always be added to salads or soups to supply fiber and proteins to your meals, even if they are rushed.
Be cautious about the kind of preservatives used in the preservation of the dog food in case you are purchasing: Preservatives might make dog foods more edible, you should avoid pet foods that contain chemical preservatives like BHA, BHT and ethixyquin. Vitamins C & E are better preservatives for the dog’s health.
Don’t simply utilize nutrition as an afterthought to your program. Employ nutrition as an integral part of your efforts and you will progress your overall training to even higher levels.
Many diets now a days are focusing on the ingredients and the chemistry of the food. These contain natural ingredients for example green tea, which help to reduce hunger. Everyone can lose weight, so long as they take the right steps.
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