Beurer BF 18 User Manual download pdf (Page 12)

Muscle percentage

The muscle percentage is normally within the following ranges:

Man Woman

Age low normal high

10 -14 <44% 4 4 - 5 7 % > 5 7 %

15 -19 <43% 4 3 - 5 6 % > 5 6 %

20 - 29 <42% 4 2 - 5 4 % > 5 4 %

30 - 39 <41% 4 1 - 5 2 % > 5 2 %

4 0 - 4 9 <40% 4 0 - 5 0 % > 5 0 %

50 - 59 <39% 3 9 - 4 8 % > 4 8 %

6 0 - 6 9 <38% 3 8 - 4 7 % > 4 7 %

70 -100 <37% 3 7 - 4 6 % > 4 6 %

Age low normal high

10-14 <36% 3 6 - 4 3 % > 4 3 %

15-19 <35% 3 5 - 4 1 % > 4 1 %

20-29 <34% 3 4 - 3 9 % > 3 9 %

30-39 <33% 3 3 - 3 8 % > 3 8 %

40-49 <31% 31- 36 % > 3 6 %

50-59 <29% 2 9 - 3 4 % > 3 4 %

60-69 <28% 2 8 - 3 3 % > 3 3 %

70-100 <27% 27- 32 % > 3 2 %

Bone mass

Like the rest of our body, our bones are subject to the natural development, degeneration and ageing

processes. Bone mass increases rapidly in childhood and reaches its maximum between 30 and 40 ye-

ars of age. Bone mass reduces slightly with increasing age. You can reduce this degeneration somewhat

with healthy nutrition (particularly calcium and vitamin D) and regular exercise. With appropriate muscle

building, you can also strengthen your bone structure.

Note that this scale will not show you the calcium content of your bones, but will measure the weight of all

bone constituents (organic substances, inorganic substances and water).

Attention: Please do not confuse bone mass with bone density. Bone density can be determined only by

means of a medical examination (e.g. computer tomography, ultrasound). It is therefore not possible to

draw conclusions concerning changes to the bones and bone hardness (e.g. osteoporosis) using this scale.

Little influence can be exerted on bone mass, but it will vary slightly within the influencing factors (weight,

height, age, gender).

Results in relation to time

Note that it is only the long-term trend which counts. Short period fluctuations in weight over a few days

are mostly the result of a loss of fluid.

The interpretation of the results will depend on changes in your: overall weight and body fat, body water

and muscle percentages, as well as on the period during which these changes take place. Rapid changes

within days must be distinguished from medium term changes (over weeks) and long term changes

(months).

A basic rule is that short term changes in weight almost exclusively represent changes in water content,

whereas medium and long term changes may also involve the fat and muscle percentages.

• If your weight reduces over the short term, but your body fat percentage increases or remains the same,

you have merely lost water – e.g. after a training session, sauna session or a diet restricted only to rapid

weight loss.

• If your weight increases over the medium term and the body fat percentage falls or stays the same, then

you could have built up valuable muscle mass.

If your weight and body fat percentage fall simultaneously then your diet is working – you are losing fat

mass. Ideally you should support your diet with physical activity, fitness or power training. By this means,

you can increase your muscle percentage over the medium term.

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Beurer BF 18 User Manual Page 12

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