Effect on body water of running 10 miles.
Despite a 2.3% weight loss in 10 men who ran 10 miles, extracellular water (ECW) increased by 3.5%. Total body water (TBW) measured as tritium space increased by 2.4%, and intracellular water (ICW), inferred as the difference between TBW and ECW, increased by 1.8%. The increase in tritium space probably represents increased nonaqueous hydrogen exchange in the postexercise period ond casts doubt on the validity of TBW and ICW when measured immediately after exercise.
D000328:Adult; D001834:Body Water / Q000502:physiology*; D001835:Body Weight; D005110:Extracellular Space / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D012420:Running