Naslov
Antiandrogens in hormonal contraception limit muscle strength gain in strength training: Comparison study

Autori
Ružić, Lana ; Matković, Branka ; Leko, Goran

Izvornik
Croatian medical journal (0353-9504) 44 (2003), 1; 65-68

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
androgen antagonists ; body composition ; contraception ; exercise ; physical fitness ; skinfold thickness ; women

Sažetak
Aim. To determine antiandrogen effects on muscle strength gain and fat-free mass increase during exercise in women using hormonal contraception with antiandrogen content. Methods. The study included 50 women (age range, 18-30 years ; mean +/- SD, 26 +/- 3) using hormonal contraception for at least 12 months before the beginning of the study. They were divided into two groups: "anti androgen" group (n = 26) and "estrogen-progestogen" group (n = 24) groups. The subjects participated in strength training sessions 3 times a week during 16 weeks. Initially, there were no differences between the groups in fat-free mass, muscle strength, or maximum oxygen uptake. The parameters were measured before, during, and after the training period. Results. After the training period, the mean increase of fat-free mass was significantly greater in the estrogen-progestogen group (p < 0.001). The mean gain in the muscle strength (in Newtons) was also more evident in estrogen-progestogen group (1289.0 +/- 17.1 N vs 101.9 +/- 18.5 N ; p < 0.001). There were no differences in the maximum oxygen consumption (VO(2)max). Conclusion. Antiandrogens had a negative effect on muscle strength, minimizing the effects of strength training in women. Hormonal contraception containing antiandrogens should be avoided in young exercising women.

Izvorni jezik
Engleski

Znanstvena područja
Kineziologija, Socijalne djelatnosti

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