New age, eh?

Perhaps I'm just an old-fashioned fogey, but could someone explain to me how the following description of the Indian team's practice sessions indicates work on dealing with late swing (the main problem the Indian bats had in the first test)?:

The Indians were originally supposed to practice at Trent Bridge but changed their plans this morning because of incessant showers. The practice itself saw some innovations, with the batsmen trying out strokes with the wrong hand against deliveries bowled underarm. Ganguly did take part in that session, batting right-handed, and even padded up to face the bowling machine later but decided against it towards the end. The senior bowlers weren't present and it was mainly Ishant Sharma and Mahendra Singh Dhoni, the wicketkeeper, who did the bowling.

From this article, which also talks about a niggling back problem that afflicts Ganguly.