TY - JOUR
T1 - The effects of creatinemonohydrate loading on anaerobic performance and one-repetition maximum strength
AU - Zuniga, Jorge M.
AU - Housh, Terry J.
AU - Camic, Clayton L.
AU - Hendrix, C. Russell
AU - Mielke, Michelle
AU - Johnson, Glen O.
AU - Housh, Dona J.
AU - Schmidt, Richard J.
PY - 2012/6
Y1 - 2012/6
N2 - The purpose of this study was to examine the effects of 7 days of supplementation with 20 g d -1 of creatine monohydrate (CM) on mean power (MP) and peak power (PP) from the Wingate anaerobic test (WAnT), body weight (BW), 1-repetition maximum (1RM) bilateral leg extension (LE) strength, and 1RM bench press (BP) strength. This study used a randomized, double-blind, placebo-controlled design. Twentytwo men (mean6SD: age = 22.1 ± 2.0 years; height = 178.0 ± 5.8 cm; body weight [BW] = 77.6 ± 7.6 kg) were randomly assigned to either a supplement (SUPP; n = 10) or placebo (PLAC; n = 12) group. The SUPP group ingested 20 g d -1 of CM powder for 7 days, whereas the PLAC ingested 20 g d -1 of maltodextrin powder. Measurements for the PLAC and SUPP groups included BW, PP, and MP from two 30-second Wants (separated by 7 minutes), and 1RM strength for LE and BP. Testing was conducted before (PRE) and after (POST) 7 days of ingesting either the supplement or placebo. The results of this study indicated that there was a significant (p ≤ 0.05) increase from PRE to POST testing in MP for the SUPP group (5.4%) but not for the PLAC group (20.3%). There were no between-group differences, however, for 1RM LE and 1RM BP strength. Furthermore, there were no changes in PP or BW for either group. The findings of this study indicated that loading with 20 g d -1of CM for 7 days increased MP (5.4%increase) from the WAnT, but it had no effect on strength (1RM LE and 1RM BP), PP, or BW.
AB - The purpose of this study was to examine the effects of 7 days of supplementation with 20 g d -1 of creatine monohydrate (CM) on mean power (MP) and peak power (PP) from the Wingate anaerobic test (WAnT), body weight (BW), 1-repetition maximum (1RM) bilateral leg extension (LE) strength, and 1RM bench press (BP) strength. This study used a randomized, double-blind, placebo-controlled design. Twentytwo men (mean6SD: age = 22.1 ± 2.0 years; height = 178.0 ± 5.8 cm; body weight [BW] = 77.6 ± 7.6 kg) were randomly assigned to either a supplement (SUPP; n = 10) or placebo (PLAC; n = 12) group. The SUPP group ingested 20 g d -1 of CM powder for 7 days, whereas the PLAC ingested 20 g d -1 of maltodextrin powder. Measurements for the PLAC and SUPP groups included BW, PP, and MP from two 30-second Wants (separated by 7 minutes), and 1RM strength for LE and BP. Testing was conducted before (PRE) and after (POST) 7 days of ingesting either the supplement or placebo. The results of this study indicated that there was a significant (p ≤ 0.05) increase from PRE to POST testing in MP for the SUPP group (5.4%) but not for the PLAC group (20.3%). There were no between-group differences, however, for 1RM LE and 1RM BP strength. Furthermore, there were no changes in PP or BW for either group. The findings of this study indicated that loading with 20 g d -1of CM for 7 days increased MP (5.4%increase) from the WAnT, but it had no effect on strength (1RM LE and 1RM BP), PP, or BW.
KW - Lower body strength
KW - Short-term creatine supplementation
KW - Upper body strength
KW - Wingate anaerobic test performance
UR - http://www.scopus.com/inward/record.url?scp=84863649907&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863649907&partnerID=8YFLogxK
U2 - 10.1519/JSC.0b013e318234eba1
DO - 10.1519/JSC.0b013e318234eba1
M3 - Article
C2 - 21921817
AN - SCOPUS:84863649907
SN - 1064-8011
VL - 26
SP - 1651
EP - 1656
JO - Journal of strength and conditioning research
JF - Journal of strength and conditioning research
IS - 6
ER -