| Title |
Incremental effects of 28 days of beta-alanine supplementation on high-intensity cycling performance and blood lactate in masters female cyclists
|
|---|---|
| Published in |
Amino Acids, August 2015
|
| DOI | 10.1007/s00726-015-2050-x |
| Pubmed ID | |
| Authors |
J. M. Glenn, M. Gray, R. Stewart, N. E. Moyen, S. A. Kavouras, R. DiBrezzo, R. Turner, J. Baum |
| Abstract |
Within the aging population, there exists a subset of individuals termed masters athletes (MA). As masters-level competition increases in popularity, MA must find methods to enhance individual athletic performance. Longitudinal beta-alanine (BA) supplementation is suggested to enhance physical capability during exercise; however, these effects have not been evaluated in MA. To examine the longitudinal effects of BA on time to exhaustion (TTE), total work completed (TWC), and lactate clearance in female MA cyclists. Twenty-two female MA (age = 53.3 ± 1.0) participated in this double-blind design. Subjects were randomly assigned to BA (n = 11; 800 mg BA + 8 g dextrose) or placebo (PLA; n = 11; 8 g dextrose) groups and supplemented 4 doses/day over 28 days. Every 7 days, subjects completed a cycling TTE at 120 % VO2max, and TWC was calculated. Blood lactate was measured at baseline, immediate post, and 20-min post each TTE. No significant differences existed between groups for any variable at baseline (p > 0.05). After 28 days supplementation, BA had greater TTE (23 vs 1 % change) and TWC (21 vs 2 % change) than PLA (p < 0.05). Following the 20-min TTE recovery, lactate was 24 % lower in BA compared to PLA (4.35 vs. 5.76 mmol/L, respectively). No differences existed for variables during intermittent weeks. 28 days of BA supplementation increased cycling performance via an enhanced time to exhaustion and total work completed with associated lactate clearance during passive rest in female MA. |
X Demographics
The data shown below were collected from the profiles of 20 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 | 5 | 25% |
| Australia | 2 | 10% |
| United Kingdom | 2 | 10% |
| Jamaica | 1 | 5% |
| Spain | 1 | 5% |
| Unknown | 9 | 45% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 13 | 65% |
| Scientists | 5 | 25% |
| Practitioners (doctors, other healthcare professionals) | 1 | 5% |
| Science communicators (journalists, bloggers, editors) | 1 | 5% |
Mendeley readers
The data shown below were compiled from readership statistics for 138 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 2 | 1% |
| United States | 1 | <1% |
| Unknown | 135 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 31 | 22% |
| Student > Bachelor | 22 | 16% |
| Student > Ph. D. Student | 10 | 7% |
| Student > Postgraduate | 7 | 5% |
| Researcher | 6 | 4% |
| Other | 21 | 15% |
| Unknown | 41 | 30% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 34 | 25% |
| Nursing and Health Professions | 18 | 13% |
| Agricultural and Biological Sciences | 13 | 9% |
| Medicine and Dentistry | 11 | 8% |
| Biochemistry, Genetics and Molecular Biology | 4 | 3% |
| Other | 16 | 12% |
| Unknown | 42 | 30% |
Attention Score in Context
This research output has an Altmetric Attention Score of 15. 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 22 September 2016.
All research outputs
#2,284,649
of 24,079,335 outputs
Outputs from Amino Acids
#126
of 1,554 outputs
Outputs of similar age
#29,927
of 268,694 outputs
Outputs of similar age from Amino Acids
#3
of 41 outputs
Altmetric has tracked 24,079,335 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 90th percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 1,554 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 7.1. This one has done particularly well, scoring higher than 91% 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 268,694 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 88% of its contemporaries.
We're also able to compare this research output to 41 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 95% of its contemporaries.