Creatine Supplementation

In the two wilder et al2627 studies national

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Unformatted text preview: studies, National Collegiate Athletic Association division I players had at least 1 year of college football experience, whereas the Bemben et al.[28] study utilised red-shirt freshmen (no college experience). The red-shirt freshmen had indicated no previous Cr use while the subjects from the Wilder et al.[26,27] studies reported no usage for the 4 weeks prior to the research. Additionally, the lower dose used in the Wilder et al.[26,27] studies (3 g/day) 2005 Adis Data Information BV. All rights reserved. 113 may not have provided adequate supplementation, especially for the players with larger body mass. Using a different sport in their research design, Larson-Meyer et al.[33] conducted a double-blind, placebo-controlled study, which involved 14 division I female soccer players during their 13-week off-season resistance training programme. Seven of the women were Cr loaded with approximately 7.5g twice daily for 5 days, then maintained their Cr intake at 5 g/day for the remainder of the study. Following a repeated measures analyses to establish trial by group interactions, it was determined that bench-press and squat 1RM strength improved more for the Cr group compared with the placebo group. There was, however, no difference between the two groups concerning overall gains in lean tissue as determined by dual energy x-ray absorptiometry (DXA).[33] Supportive findings have also been documented with healthy older men. Chrusch et al.[29] examined the effects of combined Cr ingestion and resistance training (36 total training sessions) on changes in body composition and muscle performance in men aged 60–84 years. A total of 30 subjects were randomly assigned to either a Cr group (n = 16; mean age 70.4 ± 1.6 years) or a placebo group (n = 14; mean age 71.1 ± 1.8 years). The Cr loading phase consisted of 0.3 g/kg bodyweight (BW) for the first 5 days, followed by a maintenance dose of 0.07 g/kg BW. Repeated measures ANOVA analysis regarding both main effects and interaction terms indicated that the Cr group had significantly greater increases in 1RM leg press (Cr: +50.1kg vs placebo: +31.3kg) and...
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This note was uploaded on 01/28/2014 for the course BI 231 taught by Professor Richardmay during the Fall '13 term at Southern Oregon.

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