Step barrel/chair exercise apparatus

A step barrel/chair exercise apparatus having a support structure adapted to stand on a floor, the support structure having a pair of spaced apart vertical side walls, and an elastic resistance member anchor structure fastened to each of the side walls, wherein each anchor structure comprises:

• an anchor socket assembly fastened to one of the side walls and a removable elastic member anchor bar assembly mounted in the anchor socket assembly;
• the anchor socket assembly having a central tubular portion passing through the one of the side walls and a flange portion fastening the tubular portion to the side wall, the tubular portion having a central axial bore therethrough and a threaded radial bore extending into the central bore, the radial bore receiving a retractable plunger therein;
• the anchor bar assembly having an L shaped anchor bar, a cylindrical yoke receiving and holding a long leg of the anchor bar, and a spring bar tube rotatably fastened to a short leg of the anchor bar, wherein the cylindrical yoke has a portion adapted to fit within the central bore of the tubular portion of the anchor socket assembly, and wherein the cylindrical yoke has a plurality of spaced radial holes therearound for engaging the retractable plunger in one of the holes to retain the anchor bar assembly in the anchor socket assembly.