en <div style=text-align: justify;><strong>Aims:</strong> Gestational diabetes mellitus (GDM) is an asymptotic disease and can lead to adverse outcomes before and during childbirth. The present study aimed to investigate the effect of resistance training (RT) on sexual hormones in women with GDM.<br> <strong>Materials & Methods:</strong> In this quasi-experimental study, 22 women with insulin-treated GDM, with a gestational age of 24 weeks, were selected and according to body mass index were divided into equal groups of RT and control (C). During 6 weeks the RT group performed RTs for 3 sessions per week and C group only had daily activities during this time. To analyze the data, Kolmogorov-Smirnov, independent sample t-test, and repeated measure ANOVA test at p≤0.05 were used.<br> <strong>Findings:</strong> Six weeks of RT significantly reduced estrogen (p= 0.01) and increased prolactin (p= 0.001) in women with GDM, however, had not significant effect on progesterone (p= 0.34).<br> <strong>Conclusion:</strong> Six weeks of RT seems to improve the sexual hormones in women with GDM.</div> Resistance Training, Sex Hormones, Gestational Diabetes Mellitus 95 99 http://hehp.modares.ac.ir/browse.php?a_code=A-10-55582-1&slc_lang=en&sid=4 S.A. Hosseini 1003194753284600171281 1003194753284600171281 No Sport Physiology Department, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran N. Kazemi nasibe.kazemi@yahoo.com 1003194753284600171282 1003194753284600171282 Yes Sport Physiology Department, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran M. Ahmadi 1003194753284600171283 1003194753284600171283 No Department of Physical Education & Sport Science, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch, Islamic Azad University, Tehran, Iran F. Esmail Zadeh 1003194753284600171284 1003194753284600171284 No Animal Sciences Department, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran M.A. Azarbayjani 1003194753284600171285 1003194753284600171285 No Sport Physiology Department, Central Tehran Branch, Islamic Azad University, Tehran, Iran