Association between the content of intracellular and extracellular fluid and the amount of water intake among Chinese college students

Table 3 The intracellular, extracellular fluid and fluid intake of the participants

	Males	Females	Total	Statistical value (t/Z)	p
ICF
Content (kg)	24.5 [22.8,26.4]	17.3 [16.1,18.5]	20.5 [17.3,24.5]	-10.611^a	< 0.001
ICF/BW(%)	36.9 ± 3.6	31.8 ± 2.3	34.4 ± 4.0	10.342^b	< 0.001
ECF
Content (kg)	14.7 [13.5,15.6]	10.6 [9.9,11.4]	12.4 [10.7,14.7]	-10.408^a	< 0.001
ECF/BW (%)	22.0 ± 2.2	19.5 ± 1.5	20.8 ± 2.3	7.977^b	< 0.001
TBW
Content (kg)	39.1 [36.2,42.2]	28.0 [26.0,29.9]	32.8 [28.0,39.2]	−10.570_a	< 0.001
TBW/BW (%)	58.8 ± 5.8	51.3 ± 3.8	55.2 ± 6.2	9.750^b	< 0.001
ECF/ICF (%)	60.4 ± 1.7	60.6 ± 1.7	60.5 ± 1.7	−0.746^b	0.475
TFI (mL)	1214 [977,1545]	958 [696,1383]	1135 [858,1478]	−3.131_a	0.002
TFI/TWI (%)	49.3 ± 8.6	48.8 ± 10.4	49.1 ± 9.5	0.301^b	0.764
FWI (mL)	1286 ± 263	1054 ± 213	1173 ± 263	6.054^b	< 0.001
FWI/TWI (%)	50.7 ± 8.6	51.2 ± 10.4	50.9 ± 9.5	−0.301^b	0.764
TWI (mL)	2583 ± 602	2154 ± 625	2373 ± 648	4.392^b	< 0.001

Note: ICF Intracellular fluid, ECF Extracellular fluid, TBW Total body water, TFI Daily total fluid intake, FWI Daily water intake from food, TWI Daily total water intake. Mean and standard deviation (SD) was used to describe variables in normal distribution; percentile (P50 [P25, P75]) was used to describe variables in skewness distribution. ^a, means the statistical value Z of Kruskal-Wallis test for comparison of indexes between sexes. ^b, means the statistical value t of Student’s t-test for comparison of indexes between sexes

ISSN: 1743-7075