Here's why common attitudes such as the simple calorie restriction or physical activity alone does not often lead to the achievement of weight loss.
The energy balance must take into account the relationship between income and expenditure, as on a scale does not move the needle on the two plates where there is the same weight, body mass does not change if the contribution Energy (Kcal taken) equals energy expenditure.
The latter consists of:
- basal metabolism
- Fitness
- specific dynamic action of food (DSA)
need to be clear on one point as of now, the goal is weight loss but is even more important it is damaging the stored fat (FM) while preserving those of lean body mass (FFM), this is possible by combining :
- Reducing calorie intake by no more than the daily requirement from 500 to 1000 kcal / day to
- Fitness individualized whereby the metabolically active tissue (muscle) remains intact.
The caloric restriction alone is not sufficient to ensure a stable and lasting weight loss because it is difficult to maintain over time, but also unable to modify certain metabolic aspects, because after a certain period of time the sense of hunger is so strong that all the weight lost will be regained.
To better understand consider the "theory of balance" that defines for each subject's body mass and relative fat mass; if there is a deviation between these two parameters, the body will do anything to redress the balance by stimulating the feeling of hunger.
More precisely, everything happens at the hypothalamic level where low values \u200b\u200bof plasma leptin (a substance released by fat cells) is perceived as a reduction in fat mass, and diversion of PDE and subsequent feeling of hunger.
Caloric restriction alone has no effect on PDE (indeed).
Many medicines as well as adequate physical activity, moving instead to a PDE body mass and less fat, which is why the association low-calorie diet / exercise individualized guarantee the best results.
summarize the benefits of physical activity individualized associated with caloric restriction for weight loss
- Increase your daily caloric expenditure
- facilitates the mobilization of lipids from adipose tissue and their use
- Increase loss of body fat while preserving muscle mass
- The preservation of muscle mass counteracts the reduction in metabolic rate that normally accompanies a reduction in caloric intake
- obviates resort to a more severe food restriction
- represents an essential element of health.
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