[(a) and (b)] Complex shear modulus |G*|, [(c) and (d)] phase angle δ, and [(e) and (f)] relative energy dissipated versus z in articular cartilage sheared at f = 0.01, 0.1, and 1 Hz with γi = 0 μm and εc = 20%. Data are mean ± SD, horizontal bars denote p ≤ 0.05/3, and (*) denotes p ≤ 0.05 versus (*) z > 250 μm. In (a), (c), and (e), only upper or lower error bars for selected points are shown to enhance clarity.