| Chapter title |
Effects of resistance training and protein plus amino acid supplementation on muscle anabolism, mass, and strength
|
|---|---|
| Published in |
Amino Acids, September 2006
|
| DOI | 10.1007/s00726-006-0398-7 |
| Pubmed ID | |
| Authors |
D. S. Willoughby, J. R. Stout, C. D. Wilborn |
| Abstract |
This study examined 10 wks of resistance training and the ingestion of supplemental protein and amino acids on muscle performance and markers of muscle anabolism. Nineteen untrained males were randomly assigned to supplement groups containing either 20 g protein (14 g whey and casein protein, 6 g free amino acids) or 20 g dextrose placebo ingested 1 h before and after exercise for a total of 40 g/d. Participants exercised 4 times/wk using 3 sets of 6-8 repetitions at 85-90% of the one repetition maximum. Data were analyzed with two-way ANOVA (p < 0.05). The protein supplement resulted in greater increases in total body mass, fat-free mass, thigh mass, muscle strength, serum IGF-1, IGF-1 mRNA, MHC I and IIa expression, and myofibrillar protein. Ten-wks of resistance training with 20 g protein and amino acids ingested 1 h before and after exercise is more effective than carbohydrate placebo in up-regulating markers of muscle protein synthesis and anabolism along with subsequent improvements in muscle performance. |
X Demographics
The data shown below were collected from the profiles of 10 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 States | 2 | 20% |
| Spain | 2 | 20% |
| Unknown | 6 | 60% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 9 | 90% |
| Practitioners (doctors, other healthcare professionals) | 1 | 10% |
Mendeley readers
The data shown below were compiled from readership statistics for 357 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 7 | 2% |
| United Kingdom | 4 | 1% |
| Brazil | 2 | <1% |
| Portugal | 1 | <1% |
| Spain | 1 | <1% |
| Denmark | 1 | <1% |
| Unknown | 341 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 70 | 20% |
| Student > Bachelor | 69 | 19% |
| Student > Ph. D. Student | 39 | 11% |
| Researcher | 31 | 9% |
| Student > Postgraduate | 21 | 6% |
| Other | 60 | 17% |
| Unknown | 67 | 19% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 84 | 24% |
| Medicine and Dentistry | 53 | 15% |
| Agricultural and Biological Sciences | 47 | 13% |
| Nursing and Health Professions | 41 | 11% |
| Biochemistry, Genetics and Molecular Biology | 21 | 6% |
| Other | 37 | 10% |
| Unknown | 74 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 56. 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 27 December 2023.
All research outputs
#737,600
of 25,085,000 outputs
Outputs from Amino Acids
#32
of 1,614 outputs
Outputs of similar age
#1,065
of 81,659 outputs
Outputs of similar age from Amino Acids
#1
of 15 outputs
Altmetric has tracked 25,085,000 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 97th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 1,614 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 7.6. This one has done particularly well, scoring higher than 98% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 81,659 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 98% of its contemporaries.
We're also able to compare this research output to 15 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.