Career
Alongside Lydia de Vega, she is one of the foremost track and field athletes produced by the Philippines. At one point, she also dominated the sprints winning both the 100 and 200 metres in the 1995 Southeast Asian Games. She was also a competitor for the Philippines in the long jump event at the Olympic Games in 1984 and 1996.
She represented her country at the World Championships in Athletics on four occasions: in the 400 m hurdles in 1991, the long jump in 1995 and 1997, and the 100 metres in 1997.
She was also a five-time participant at the IAAF World Indoor Championships, competing in 1985, 1989, 1993, 1995 and 1997 in sprints and long jump. She was a two-time medallist at the Asian Games, taking the long jump bronze medal at the 1994 Games as well as a 400 metres hurdles bronze medal in 1990.
She holds several Filipino records: 57.57 seconds for the 400 m hurdles, 5346 points for the heptathlon (set at the 1998 Asian Games), 3:40.9 minutes for the 4×400 metres relay, 25.05 seconds for the indoor 200 metres and 6.11 m for the indoor long jump. She attended Far Eastern University in Manila.
Since her retirement Muros-Posadas has appeared several times on the reality television show Survivor Philippines.