Average walking distance on the six-minute test improved from 1, 508 feet to 1, 588 feet over the 30-day study period.

WSJ: A Virtual Coach Spurs Patients

The breakthrough was welcome but on such an arduous day England would not have relished the sight of the limpet-like Shivnarine Chanderpaul walking out to bat, a man with a Test average of 100 in the last two years.

BBC: Swann haul puts England in charge