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Man
Leeftijd
Laag vetper-
centage
Normaal vet-
percentage
Hoog vetper-
centage
Zeer hoog vet-
percentage
6 – 12 < 7 7 – 18 18 – 25 > 25
13 – 19 < 8 8 – 19 19 – 25 > 25
20 – 39 < 9 9 – 20 20 – 26 > 26
40 – 59 < 11 11 – 22 22 – 28 > 28
60 – 79 < 13 13 – 24 24 – 30 > 30
Atleet 3 – 15
5.3. Lichaamswater
Het lichaam van een volwassen mens bestaat voor zowat 60% uit water. Doorgaans
is er sprake van een bepaalde bandbreedte, waarbij oudere mensen een lager wa-
terpercentage hebben dan jongere, en mannen een hoger waterpercentage heb-
ben dan vrouwen. Het verschil tussen mannen en vrouwen heeft te maken met
de grotere massa lichaamsvet bij vrouwen. Omdat het overgrote deel van het li-
chaamswater terug te vinden is in de vetvrije massa (73% van de vetvrije massa is
water) en het watergehalte in vetweefsel van nature zeer laag is (zowat 10% van het
vetweefsel is water), daalt het percentage lichaamswater automatisch naarmate het
vetpercentage stijgt.
Een verlies aan water van 5 % kan uw lichaamsenergie met 20 – 30% doen afnemen.
Drink dagelijks minstens 2 liter vloeistof.
Normaal percentage lichaamswater
Vrouw Man
Kind > 58 > 60
Volwassene > 52 > 58
Atleet > 56 > 60
Atleten hebben doorgaans een waterpercentage dat minstens 5% hoger ligt. Naar-
mate de leeftijd stijgt, daalt het waterpercentage ongeveer 10%.
8


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