Table 2.

Skin hydration changes detected in different anatomical areas in both groups of volunteers after the dietary water surplus

	T0 (mean ± SD)	T1 (mean ± SD)	T2 (mean ± SD)	P-value (T1 vs T0)	P-value (T2 vs T1)	P-value (T2 vs T0)
Surface hydration
Group 1
Forehead	53.97±22.44	65.24±17.03	75.52±14.31	0.000**	0.000**	0.000**
Zygomatic	48.66±25.41	57.04±23.93	69.52±21.51	0.025*	0.000**	0.000**
Hand	33.59±18.29	30.31±16.91	47.48±15.60	0.125 (ns)	0.008*	0.000**
Forearm	29.09±11.77	35.14±13.71	37.83±13.01	0.040*	0.180 (ns)	0.000**
Leg	34.85±17.94	41.11±13.53	45.81±16.68	0.036*	0.172 (ns)	0.000**
Group 2
Forehead	50.64±18.77	49.67±15.60	61.86±17.83	1.000 (ns)	0.023*	0.176 (ns)
Zygomatic	38.76±23.02	47.77±21.13	55.70±25.95	0.301 (ns)	0.601 (ns)	0.126 (ns)
Hand	27.01±10.06	36.08±13.52	37.26±13.50	0.312 (ns)	1.000 (ns)	0.238 (ns)
Forearm	26.89±22.16	28.16±12.30	27.94±7.85	1.000 (ns)	1.000 (ns)	1.000 (ns)
Leg	33.05±19.57	34.34±12.77	32.64±11.66	1.000 (ns)	1.000 (ns)	1.000 (ns)
Deep hydration
Group 1
Forehead	29.20±4.88	36.34±9.25	40.62±10.21	0.004*	0.008*	0.000**
Zygomatic	29.25±4.55	35.30±9.06	39.58±10.63	0.012*	0.007*	0.000**
Hand	33.51±5.45	41.29±10.47	46.02±11.95	0.004*	0.031*	0.000**
Forearm	23.32±3.96	28.37±7.50	30.64±8.65	0.030*	0.136 (ns)	0.000**
Leg	28.67±5.21	36.94±9.76	39.63±10.84	0.000**	0.457 (ns)	0.000**
Group 2
Forehead	28.93±4.18	33.19±7.86	35.65±8.33	0.617 (ns)	0.720 (ns)	0.224 (ns)
Zygomatic	27.50±4.53	32.67±8.38	35.56±9.23	0.437 (ns)	0.345 (ns)	0.110 (ns)
Hand	34.15±8.59	36.72±11.10	36.70±11.25	0.315 (ns)	1.000 (ns)	0.344 (ns)
Forearm	23.94±6.34	23.58±4.06	23.90±4.53	1.000 (ns)	1.000 (ns)	1.000 (ns)
Leg	31.01±13.12	33.25±10.75	34.86±13.54	0.614 (ns)	1.000 (ns)	0.571 (ns)

Notes:

Surface and deep hydration values were obtained with different Moisturemeter frequency probes and are expressed in arbitrary units.

^*P<0.05,

^**P<0.001.

Abbreviations: ns, not significant; SD, standard deviation; T0, day 0; T1, day 15; T2, day 30; vs, versus.