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Table 1 Phase definitions for drinking task.

From: Three-dimensional kinematic motion analysis of a daily activity drinking from a glass: a pilot study

Phase name

Start

Detected by

End

Detected by

Reaching (includes grasping)

Hand movement begins

Hand marker velocity surpassed 2% of the peak velocity

Hand begins to move towards the mouth with the glass

Elbow angle is in maximal extension

Forward transport (glass to mouth)

Hand begins to move towards the mouth with the glass

Elbow angle is in maximal extension

Drinking begins

Hand marker velocity returned to (5 %) of the peak velocity

Drinking

Drinking begins

Hand marker velocity returned to (5 %) of the peak velocity

Drinking ends

Hand marker velocity surpassed 5% of the peak velocity

Back transport (glass to table, includes release of grasp)

Hand begins to move to put the glass back to table

Hand marker velocity surpassed 5% of the peak velocity

Hand releases the glass and begins to move back to initial position

Elbow angle is in maximal extension

Returning (hand back to initial position)

Hand begins to move back to initial position

Elbow angle is in maximal extension

Hand is back resting in initial position

Hand marker velocity returned to 2% of the peak velocity