2. The 400 Meter Walk Equipment Needs Equipment Needs Participant Safety and Stopping Criteria Participant Safety and Stopping Criteria Course Preparation Course Preparation Instruction for Administration Instruction for Administration

3. Introduction The 400 Meter Walk is the primary outcome measure for the LIFE study. This test is a measure of functional ability. Its potential as a predictor of morbidity and future disability makes it an important outcome measure for cross sectional, longitudinal and clinical intervention trials. The 400 Meter Walk is the primary outcome measure for the LIFE study. This test is a measure of functional ability. Its potential as a predictor of morbidity and future disability makes it an important outcome measure for cross sectional, longitudinal and clinical intervention trials.

4. Equipment Needs Redi-Measure distance measuring wheel Small Traffic Cones Stop Watch 2 Standard Chairs

5. Safety Issues and Stopping Criteria: Flat and soft soled shoes Flat and soft soled shoes Do not feel safe Do not feel safe Pain, tightness or pressure in chest Pain, tightness or pressure in chest Significant shortness of breath Significant shortness of breath Difficulty breathing Difficulty breathing Feeling faint, lightheaded or dizzy Feeling faint, lightheaded or dizzy Test duration over 15 minutes Test duration over 15 minutes

6. Course Preparation Course Length 20 Meters Cones placed at ends of course Ten Laps Performed Chairs placed at ends of course

7. Preparing the Participant Read script on instructions for test Read script on instructions for test Repeat instructions if necessary, but DO NOT alter the script Repeat instructions if necessary, but DO NOT alter the script Ask participant to attempt test without the use of an assistive device Ask participant to attempt test without the use of an assistive device

8. Test Administration Demonstrate one lap Demonstrate one lap Begin timing as subject crosses line Begin timing as subject crosses line Follow subject at close distance Follow subject at close distance Provide encouragement Provide encouragement End test as subjects first foot crosses line End test as subjects first foot crosses line Rate difficulty of breathing (BORG index) Rate difficulty of breathing (BORG index) Determine heart rate (sitting radial pulse) Determine heart rate (sitting radial pulse)

9. Test Conclusion Participant completes 400 meter course Participant completes 400 meter course Participant requires rest stop longer than 60 seconds Participant requires rest stop longer than 60 seconds Standing 30 seconds: Prompt to continue Standing 30 seconds: Prompt to continue Standing 60 seconds: Prompt to continue Standing 60 seconds: Prompt to continue Participant needs to sit down Participant needs to sit down Mark point at which test is stopped with traffic cone for later measurement Mark point at which test is stopped with traffic cone for later measurement Stop stopwatch when test is terminated Stop stopwatch when test is terminated Assist participant to comfortable location while they recover Assist participant to comfortable location while they recover

10. Rest Stops No limit to number of rest stops No limit to number of rest stops Remember participant safety criteria for conclusion of testing Remember participant safety criteria for conclusion of testing Note reason for ending test in data collection form along with time and distance Note reason for ending test in data collection form along with time and distance

11. The 400 Meter Walk Test Read manual of operations for all functional testing Read manual of operations for all functional testing Practice on fellow staff members simulating various degrees of impairment Practice on fellow staff members simulating various degrees of impairment Fill out data collection form accurately Fill out data collection form accurately