Failure to clear the 'Yo-Yo' endurance test at the NationalCricketAcademy was the primary reason why Yuvraj Singh and Suresh Raina were not considered for the Sri Lanka limited overs series.
The Indian team regularly undergoes a series of fitness tests with 'Yo-Yo' endurance test being the most important of them.
It is an advanced version of the 'beep' test that was used by teams of earlier generations. The current Indian team is considered to be the fittest by a fair distance.
It has been learnt that for the current Indian team, the acceptable 'Yo-Yo' score is 19.5 and upwards. Captain Virat Kohli, easily the fittest Indian cricketer, scores around 21 in the test.
However both Yuvraj and Raina scored well below the permissible level of 19.5 with Yuvraj barely managing to touch 16, which was the biggest reason for his ouster.
"The current team think tank, coach Ravi Shastri, skipper Virat Kohli and chairman of selectors MSK Prasad have made it clear that fitness standards are non-negotiable.
"On an average, the Australian cricketers score 21 in Yo-Yo test. Here Virat, Ravindra Jadeja, Manish Pandey regularly hit that score while others are either touching 19.5 or is hitting above that score," a BCCI official, said under conditions of anonymity.
"In an earlier era, when the traditional beep test was in vogue, the Indian players of the 1990's would have scored around 16 to 16.5 barring a few like Mohammed Azharuddin, Robin Singh or Ajay Jadeja.
"But now it's different as the skipper himself is hitting the benchmark, which the Australian cricket team sets it," the official added.
It must be noted that the same test for football and hockey team will produce entirely different results, have higher benchmarks, considering the speed and endurance level involved with the sport.
Image: Yuvraj Singh and Suresh Raina
Photograph: Hamish Blair/Getty Images