Do you know why exercise is beneficial?
Epidemiological Research suggests that exercise, i.e. organized 30 minutes physical activity at least three times a week, is beneficial to our health and helps us to control our weight. Systematic exercise improves the function of the heart and of the respiratory system, reducing the risk of coronary and respiratory diseases. Furthermore, it increases the skeletal mass (prevention against osteoporosis) and improves the musculature, helping the treatment of many relevant diseases. Finally, exercise increases the energy expenditure of our organism, meaning the consumption of calories, contributing thus to the reduction of our body weight in parallel of course, to a suitable diet.
| Activity | Calorie consumption per 30 minutes |
| Sleeping | 40 |
| Standing up | 70 |
| Walking | 90 |
| Fast Walking | 150 |
| Swimming | 360 |
| Exercising | 210 |
| Soccer | 270 |
Don’t forget that if there is no time for organized exercise, you can substitute exercise for a daily walk.
Body Mass Index (BMI) for Adults
The Body Mass Index is the most frequently applied measure for the body weight’s and overweight’s estimation in everyday clinical practice. The Body Mass Index is widely known mainly because it is very easy to calculate and because it is better related to body fat than any other measure. Nevertheless, we should take into consideration that the Body Mass Index provides only an indication and not an accurate index for measuring the body fat. For an appropriate and complete picture, you should visit a scientist-dietitian, who will estimate the total composition of your body, using skinfold and other anthropometric estimation methods.
The Body Mass Index (BMI) is easily calculated by dividing our weight in kilograms with our quadratic height in meters:
ΒΜΙ = Weight (in kg) / Height2 (in m2)
Example:
Calculation of the BMI of a woman with a weight of 60kg and a height of 1,60m:
ΒΜΙ = 60 / 1,602 = 60 / (1,6 x 1,6) = 60 / 2,56 = 23,4 kg/ m2
| Body Mass Index (ΒΜΙ) | Classification | Disease Risk* |
| < 18,5 | Underweight | Χαμηλός (Low (high risk of diseases, such as psychogenic anorexia, undernourishment etc.) |
| 18,5 – 24,9 | Normal Weight | Low – Medium |
| 25 – 29,9 | Overweight | High |
| Obesity: | ||
| 30 – 34,9 | Obesity 1st degree |
Very High |
| 35 – 39,9 | Obesity 2nd degree |
Seriously High |
| >40 | Obesity 3rd degree |
Extremely High |
*risk refers to chronic, obesity-related, decay diseases, like heart diseases, hypertension, diabetes mellitus etc.
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