| Title |
The effects of supplementation with 19-nor-4-androstene-3,17-dione and 19-nor-4-androstene-3,17-diol on body composition and athletic performance in previously weight-trained male athletes
|
|---|---|
| Published in |
European Journal of Applied Physiology, May 2001
|
| DOI | 10.1007/s004210100395 |
| Pubmed ID | |
| Authors |
Darin Van Gammeren, Darin Falk, Jose Antonio |
| Abstract |
The purpose of this study was to determine the effects of 8 weeks of norsteroid supplementation on body composition and athletic performance in previously weight-trained males. Subjects were weight and percent body fat matched and randomly assigned to receive either 100 mg of 19-nor-4-androstene-3,17-dione (N-dione) and 56 mg of 19-nor-4-androstene-3,17-diol (N-diol; 156 mg total norsteroid per day), or a placebo (a multivitamin). Each subject participated in resistance training 4 days/week for the duration of the study. Body composition was assessed via dual-energy X-ray absorptiometry. Circumference measures were taken of a relaxed and flexed arm (maximum circumference of the arm), waist (level of umbilicus), and thigh (15 cm proximal to the patella). Strength was determined with a one-repetition maximum bench press, while force and power were determined with a dumbbell bench press (60% body weight) on a Stratec Galileo force platform. Profile of mood states scores were evaluated for vigor and fatigue. There were no significant changes in any of the parameters measured. In conclusion, low-dose supplementation with N-dione and N-diol does not appear to alter body composition, exercise performance, or mood states. |
Mendeley readers
The data shown below were compiled from readership statistics for 66 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 1 | 2% |
| Brazil | 1 | 2% |
| Unknown | 64 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 13 | 20% |
| Student > Doctoral Student | 10 | 15% |
| Student > Bachelor | 8 | 12% |
| Researcher | 6 | 9% |
| Unspecified | 5 | 8% |
| Other | 10 | 15% |
| Unknown | 14 | 21% |
| Readers by discipline | Count | As % |
|---|---|---|
| Sports and Recreations | 18 | 27% |
| Nursing and Health Professions | 11 | 17% |
| Medicine and Dentistry | 8 | 12% |
| Unspecified | 5 | 8% |
| Agricultural and Biological Sciences | 3 | 5% |
| Other | 7 | 11% |
| Unknown | 14 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. 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 09 August 2014.
All research outputs
#8,534,976
of 25,374,647 outputs
Outputs from European Journal of Applied Physiology
#2,159
of 4,345 outputs
Outputs of similar age
#14,305
of 42,351 outputs
Outputs of similar age from European Journal of Applied Physiology
#6
of 13 outputs
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