Enhancement of aphrodisiac activity in male rats by ethanol extract of Kaempferia parviflora and exercise training

This study aimed to investigate the effects of Kaempferia parviflora extract (KD) and exercise training on reproductive function in male rats. Sexually mature males were assigned to four groups: control, KD70 (received 70 mg kg-1 day-1 for 4 weeks), Ex (exercise training for 4 weeks), Ex + KD70 (exercise training with KD 70 mg kg-1 day-1). At the end of treatment regimes, sexual behaviours including mount latency (ML), mount frequency (MF), ejaculation latency (EL), post-ejaculation latency (PEL), number of mount within 30 min (MF30) and number of ejaculation (NEL) were assessed by a video camera, and fertility was tested by natural mating. Results showed that KD had no effect on the weights of reproductive organs, liver, kidneys and levator ani muscle. On the other hand, the weights of epididymis, seminal vesicles, prostate gland and levator ani muscle were significantly increased in the Ex and Ex+KD70 groups. ML and EL were shortened in all treatment groups, but PEL was decreased only in KP70 group. Only Ex and Ex + KD70 groups exhibited lower MF and higher NEL whilst MF30 were not changed in all groups. None of the treatments altered male fertility. It is concluded that KD enhanced sexual motivation whereas exercise training promoted both sexual motivation and performance.