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Table 7 Urine Osmolality for the Experimental group with daily PA, SRWC, and PRAL subgroup analyses (Mean (SE)).

From: Acid-base balance and hydration status following consumption of mineral-based alkaline bottled water

Experimental Condition Pre-Treatment Period Treatment Period Post-Treatment Period
  M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12
All Subjects 373 367 387 375 343 396 435 440 445 376 358 360
(n = 19) (28) (39) (47) (32) (40) (42) (41) (44) (40) (38) (31) (35)
Low PA (n = 9) 372 (45) 390 (68) 409 (73) 403 (52) 368 (79) 379 (80) 444 (87) 451 (87) 417 (82) 426 (64) 383 (49) 420 (70)
High PA (n = 10) 374 (36) 346 (45) 368 (63) 350 (41) 330 (56) 412 (51) 427 (48) 430 (50) 473 (45) 330 (42) 335 (40) 340 (45)
Low SRWC (n = 9) 418 (39) 477 (58) 505 (79) 467 (41) 460 (43) 504 (47) 574 (46) 581 (45) 562 (46) 441 (59) 414 (41) 480 (70)
High SRWC (n = 10) 333 (37) 268 (28) 281 (28) 292 (31) 238 (36) 299 (29) 310 (42) 315 (43) 332 (45) 318 (44) 308 (41) 354 (36)
Low PRAL (n = 9) 355 (44) 342 (61) 450 (65) 343 (38) 336 (40) 362 (45) 412 (49) 419 (50) 376 (50) 345 (46) 351 (49) 413 (65)
High PRAL (n = 10) 390 (36) 389 (51) 331 (46) 404 (51) 349 (42) 427 (44) 456 (48) 460 (45) 470 (45) 404 (61) 365 (41) 4141 (39)
  1. Note: There were a total of twelve 24-hour urine collections labeled in the table as M1-M12, respectively.
  2. Mean osmolality value differed significantly (P < 0.05) from respective mean Pre-Treatment reference value which was an average of all M1-M3 values within the condition and subject group being evaluated. These Pre-Treatment reference values were as follows: 376 (all Experimental subjects), 390 (low PA), 363 (high PA), 467 (low SRWC), 294 (high SRWC), 382 (low PRAL), and 370 mOsm/kg (high PRAL).