Does the concentration of the solution that one drinks affect the rate of urine production?

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Homeostasis experiment:

Does the concentration of the solution that one drinks affect the rate of urine production?

To investigate this we have to use different solutions of water; varying salt concentrations on various subjects. Four days were set for the experiment. The first day subjects would drink normally, but come and urinate in a beaker so as to measure how much urine has been discharged. The second day a distilled amount of water was given to the subjects- they would come in the morning (9 AM) to drink a liter that water and we'd then measure how much urine came about each time they came to urinate until 1530 (time school is out). The third day the same thing was done but with a liter of .9% concentration of salt. The last day of the experiment the subjects drank each one of three different mineral waters- to see their effect on homeostasis.

Hypothesis: As salt is water retaining- The subjects would urinate much less on days where they drinks salt water then on days where they drink distilled water or normal water- as they would urinate much more on days where they would drink distilled water than on normal days and days where they'd drink salt water.
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Results:

Type of solution

Urine production

Total output

Urine output,

drunk

time given and volume mls

mls in a day

Mls per hour

Control:

Normal intake

Sub. 1. 12:20 90

try 1

15:30 110

200

31

sub. 2 14:00 280

15.30 150

320

51

Sub. 3 12:20 140

15:30 90

230

35

Try 2

sub 1 12:20 180

15:30 110

...

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