| Title |
The effects of creatine supplementation on muscular performance and body composition responses to short-term resistance training overreaching
|
|---|---|
| Published in |
European Journal of Applied Physiology, December 2003
|
| DOI | 10.1007/s00421-003-1031-z |
| Pubmed ID | |
| Authors |
Jeff S. Volek, Nicholas A. Ratamess, Martyn R. Rubin, Ana L. Gómez, Duncan N. French, Michael M. McGuigan, Timothy P. Scheett, Matthew J. Sharman, Keijo Häkkinen, William J. Kraemer |
| Abstract |
To determine the effects of creatine supplementation during short-term resistance training overreaching on performance, body composition, and resting hormone concentrations, 17 men were randomly assigned to supplement with 0.3 g/kg per day of creatine monohydrate (CrM: n=9) or placebo (P: n=8) while performing resistance exercise (5 days/week for 4 weeks) followed by a 2-week taper phase. Maximal squat and bench press and explosive power in the bench press were reduced during the initial weeks of training in P but not CrM. Explosive power in the bench press, body mass, and lean body mass (LBM) in the legs were augmented to a greater extent in CrM ( P<or=0.05) by the end of the 6-week period. A tendency for greater 1-RM squat improvement ( P=0.09) was also observed in CrM. Total testosterone (TT) and the free androgen index (TT/SHBG) decreased in CrM and P, reaching a nadir at week 3, whereas sex hormone binding globulin (SHBG) responded in an opposite direction. Cortisol significantly increased after week 1 in CrM (+29%), and returned to baseline at week 2. Insulin was significantly depressed at week 1 (-24%) and drifted back toward baseline during weeks 2-4. Growth hormone and IGF-I levels were not affected. Therefore, some measures of muscular performance and body composition are enhanced to a greater extent following the rebound phase of short-term resistance training overreaching with creatine supplementation and these changes are not related to changes in circulating hormone concentrations obtained in the resting, postabsorptive state. In addition, creatine supplementation appears to be effective for maintaining muscular performance during the initial phase of high-volume resistance training overreaching that otherwise results in small performance decrements. |
X Demographics
The data shown below were collected from the profiles of 5 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 1 | 20% |
| Spain | 1 | 20% |
| Unknown | 3 | 60% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 5 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 254 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 4 | 2% |
| Germany | 1 | <1% |
| Brazil | 1 | <1% |
| Norway | 1 | <1% |
| Canada | 1 | <1% |
| United Kingdom | 1 | <1% |
| Unknown | 245 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 44 | 17% |
| Student > Bachelor | 39 | 15% |
| Student > Ph. D. Student | 26 | 10% |
| Researcher | 18 | 7% |
| Other | 11 | 4% |
| Other | 43 | 17% |
| Unknown | 73 | 29% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 70 | 28% |
| Medicine and Dentistry | 29 | 11% |
| Nursing and Health Professions | 20 | 8% |
| Agricultural and Biological Sciences | 19 | 7% |
| Biochemistry, Genetics and Molecular Biology | 10 | 4% |
| Other | 30 | 12% |
| Unknown | 76 | 30% |
Attention Score in Context
This research output has an Altmetric Attention Score of 40. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 14 February 2024.
All research outputs
#1,033,809
of 25,601,426 outputs
Outputs from European Journal of Applied Physiology
#314
of 4,373 outputs
Outputs of similar age
#1,626
of 143,504 outputs
Outputs of similar age from European Journal of Applied Physiology
#3
of 19 outputs
Altmetric has tracked 25,601,426 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 95th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,373 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 14.7. This one has done particularly well, scoring higher than 92% of its peers.
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We're also able to compare this research output to 19 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 89% of its contemporaries.