TWD
claudication
For calculation of total walking distance (TWD), patients were made to walk on a treadmill at 2 mph (3.2 km/h) up a 12% grade until they were forced to stop because of claudication or till maximum walking time of 60 min, whichever is earlier. Thereafter, TWD was calculated using the formula: Total Walking Distance = Total Walking time [Min] X 3.2 [Km/Hr]/60 [Min].TWD showed an increase over the study period of 12 months. The mean (SD) TWD increased from 0.22 (0.254) at baseline to 0.29 (0.218) at 1 month, 0.44 (0.319) at 3 months, 0.64 (0.555) at 6 months and 0.88 (1.104) at 12 months which were statistically significant (