24
Category BMI
Underweight Severely underweight
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Underweight
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Slightly underweight
<16
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16 – 16.9
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17 – 18.4
Normal weight 18.5 – 25
Overweight 25.1 – 29.9
Obese Class I
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Class II
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Class III
30 - 34.9
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35 – 39.9
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≥40
The above information is for reference only!
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.
