Motor and gait is a composite measure of global motor function calculated using the following items:

1. Purdue Pegboard Test (no. of pegs)
2. Finger-tapping test (taps/10 seconds)
3. Time to cover a distance of 8 feet (1/seconds)
4. Number of steps required to cover 8 feet (1/no. of steps)
5. 360 degree turn time (1/seconds)
6. Number of steps to complete a 360 degree turn (1/no. of steps)
7. Leg stand (seconds)
8. Toe stand (seconds)
9. Grip strength (pounds)
10. Pinch strength (pounds)

Each individual motor performance is scaled by dividing by the sex-specific mean for that item from all participants at baseline. Then the total score is derived by averaging all the scaled motor tests together.

The individual components of this variable are available upon request.