Deigan, an Australian sports scientist who joined the national team this year, said that reaching upto the world standards will take time and the it will have to start at the club level.
"The gap between football at the domestic level and the international level is huge and for us the biggest challenge is to bridge the gap. It can never be bridged within a span of 10 days. For that, it needs to begin at the clubs," Deigan was quoted as saying by the official AIFF website.
"I have a data of over 200 lines on the team and each individual and how it relates to everything -- right from the risks of injury which they can suffer to their performances, the improvements and even the downward curve which is never encouraging. All these are variables which are the key to Stephen Constantine's game plan," he added.
He said according to statistics collected from the last two editions of the World Cup to games involving top club sides in La Liga, Bundesliga, the EPL and other Premier Leagues, a distance of 10-12 kms is to be covered by a player depending on his position.
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"In our last match against Nepal in the SAFF Suzuki Cup, the wing backs covered 10476 meters, central defenders 9435 meters; midfielders 11298 meters while the forwards 10600 meters," he said.
"You need to take into consideration distances covered by a player as a high speed, over 14km per hour. That's a big part of where we need to improve if we are to go forward."
"The best way to improve is to work at high speed and the training has to be conducted at high intensity.