The technical director of the Badminton Association of Malaysia (BAM), Morten Frost Hansen, says the majority of the country's shuttlers aren't fit enough to compete with the world's best.
"The lack of stamina has contributed to inconsistencies on the badminton court," Hansen said.
The Dane's claims were substantiated by the VO2max test which was conducted by the country's National Sports Institute (ISN), where the majority of the country's shuttlers didn't show high enough levels of endurance which is needed for long and high-intensity matches.
"The player's agility was measured by the level of lactic acid released into their muscle, in which lactic acid build-up would cause muscle fatigue," he continued.
"The result showed that the players needed to be trained at a higher intensity level in order to stay competitive."
Hansen hinted that shuttlers who wanted to achieve a top ten ranking, they must undergo high-intensity training for more than two-and-a-half hours.
"If a player is only able to survive for 45 minutes, obviously they aren't going to go too far," he added