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00005768-200305001-0120200005768_2003_35_s217_eckerson_supplementation_5abstract< 18_0_5_0 >Medicine & Science in Sports & Exercise©2003The American College of Sports MedicineVolume 35(5) Supplement 1May 2003p S217THE EFFECT OF 30 DAYS OF CREATINE PHOSPHATE SUPPLEMENTATION ON BODY WEIGHT IN MEN[E-14L FREE COMMUNICATION POSTER/CREATINE]Eckerson, J M. FACSM1; Bull, A J.1; Moore, G A.11Creighton University, Omaha, NEIncreases in body weight (BW) following creatine (Cr) loading have been reported to range from 0.7 kg to 1.6 kg. Because of the potential for phosphate to further enhance creatine phosphate (CrP) synthesis, many Cr supplements now include phosphates. Limited information is available, however, regarding the effect of long term CrP supplementation on BW.PURPOSEThe purpose of the present study was to determine the effect of 30d of single dose CrP supplementation on BW in men.METHODSThirty-two physically active men (X age ± SD = 21 ± 2 yr) randomly received one of two treatments using a double-blind design: (1) 20g of flavored dextrose powder as placebo (PL) (n=15) or (2) 5.0g of Cr citrate plus 2g of monobasic sodium phosphate + 2g monobasic potassium phosphate and 18g of dextrose (CrP) (n=17). The powders were identical in taste and appearance and were dissolved in 16 oz. of water and ingested one time per day for 30 consecutive days. During the study, the subjects were asked to maintain their normal dietary and activity pattern and refrain from exhaustive physical exercise, caffeine, and alcohol for 24h prior to BW testing. BW was measured to the nearest 0.11 kg at approximately the same time of day using a calibrated physician's scale at baseline (BL), and following 10, 20, and 30d of supplementation, as well as 10d post-supplementation (PS). The data were analyzed using a 2 × 5 ANOVA (p < 0.05).RESULTSThe results indicated that there was a significant time × group interaction and post hoc analyses revealed that only the CrP group experienced a significant change in BW. BW at 10d (78.9 ± 5.1 kg), 20d (79.1 ± 5.1 kg), 30d (78.9 ± 5.2 kg), and PS (78.5 ± 4.4 kg) was significantly greater compared to BL (77.9 ± 5.1 kg).CONCLUSIONSThese findings suggest that a single serving of CrP for 30d resulted in a significant increase in BW compared to PL. The increase in BW (1.0 kg) was similar to that observed for Cr loading protocols and occurred within the first 10d of supplementation. Thereafter, BW was maintained throughout the supplementation period and up to 10d PS. (Supported by Nutricia, USA)THE EFFECT OF 30 DAYS OF CREATINE PHOSPHATE SUPPLEMENTATION ON BODY WEIGHT IN MENEckerson, J M. FACSM; Bull, A J.; Moore, G A.E-14L Free Communication Poster/Creatine535