Associations between isokinetic knee extensor power asymmetry obtained at 180 deg s−1 and 400-m walk time (A), stair ascent time (B), and chair rise time (C), and, between isokinetic knee extensor power of strong and weak legs obtained at 180 deg s−1 and 400-m walk time (D), stair ascent time (E), and chair rise time (F).