Walking with resistance band around waist (side) ('Gait' Walking forward, with resistance to side; 01)

Stand up straight with a clear path in front of you.
Ask an assistant to place a resistance band around your waist and have them hold both ends whilst they stand to your side.
Walk forward in a straight line whilst the assistant applies a resistance, pulling you to the side.
Aim to keep walking at a steady pace in a straight line, with a normal step length.