1.The ornamental design for a hamstring curl device, as shown and described. Description: FIG.1is a front, top perspective view showing the new, original, and ornamental design of a hamstring curl device; FIG.2is a front elevation view thereof; ...
An exercise system for one or more persons including a frame, at least one game element, at least one striking member operable by a person to engage the game element, and a resistance system connected to the striking member for resisting the movement of the striking member as it is operated...