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Titolo:
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
Autore:
Van Gammeren, D; Falk, D; Antonio, J;
Indirizzi:
Univ Delaware, Sports Sci Lab, Newark, DE 19716 USA Univ Delaware Newark DE USA 19716 e, Sports Sci Lab, Newark, DE 19716 USA Univ Nebraska, Human Performance Lab, Kearney, NE 68849 USA Univ NebraskaKearney NE USA 68849 Performance Lab, Kearney, NE 68849 USA
Titolo Testata:
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 5, volume: 84, anno: 2001,
pagine: 426 - 431
SICI:
1439-6319(200105)84:5<426:TEOSW1>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
X-RAY ABSORPTIOMETRY; ANDROSTENEDIONE SUPPLEMENTATION; STEROID USE; YOUNG MEN; ENERGY; TESTOSTERONE;
Keywords:
steroid; norsteroid; androgen; exercise; weight-lifting;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Antonio, J Rexall Sundown, 6111 Broken Sound Pkwy NW, Boca Raton, FL 33487USA Rexall Sundown 6111 Broken Sound Pkwy NW Boca Raton FL USA 33487
Citazione:
D. Van Gammeren et al., "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", EUR J A PHY, 84(5), 2001, pp. 426-431

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 subjectparticipated 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.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 20:43:59