Background and objectives: Timed walk tests over 1 and 6 minute intervals have been developed for use in evaluating patients with cerebral palsy but on a smaller sample size. Moreover it is important to establish its reliability according to their gross motor function classification system levels and in an age stratum for conclusive results. Methods and materials: A total of 70 spastic cerebral palsy participants of age group 7 to 18 years tookpart in the study , who were classified according to GMFCS level .The walk tests were performed on the same day and retest was done after 7 days. Results: The test retest reliability of 6 min walk test and 1 min walk test was obtained by cronbach alpha and the value was 0.99 and 0.97 respectively. Conclusions & interpretations: The 6 min walk test and 1 min walk test has shown high test retest reliability across all gross motor function classification system levels.

Keywords: Cerebral Palsy; 6 minute walk test; 1 minute walk test