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Quadriceps muscle EMG activity during activities of daily living.
Peak muscle EMG activity of the quadriceps during activities of daily living (walking, stair descent, stair ascent and stair mean) in young (white bars) and old (grey bars) adults, with values presented as means ± standard deviation. * Indicate significant (P < 0.01) differences in muscle EMG activity (EMG, %) between groups. EMG, Electromyography.
