When using a pulley, you can intensify your workout by flexing at the bottom of the movement. For example, when doing a triceps extension, twist your forearms at the bottom of the movement so that your palms are no longer facing. They should be facing the floor. Flex your muscles before allowing the rope to raise up.

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This can be done with other exercises as well. You can still flex your muscles at the top or bottom of a movement to help isolate them and stress them more when using dumbbells or barbells as well. This will lead to larger muscle gains and a certain level of soreness the next day. You can combat that soreness with proper hydration.