The fourth is a bit different. The rectus femoris is essentially the inverse of the hamstrings. It inserts on the tibial tuberosity via the patella just like the rest of your quads, but it originates on the anterior inferior iliac spine of the ilium (just above the hip), meaning it can both flex the hip and extend the knee. However, much like the hamstrings had a longer internal moment arm at the hip than the knee, making them more effective hip extensors than knee flexors, the rectus femoris has a longer internal moment arm at the knee than the hip, making it a more effective knee extensor than a hip flexor.
Although in early 1998 he was still able to do five reps in the bench press with 495 lbs, three reps in the squat with 855 lbs (with no suit and no knee wraps), and three reps in the standing press with 405 lbs in training, while traveling with the World Wrestling Federation , he never returned to compete again in official championships in favor of his wrestling career.  He weighed 380 lbs at that time, and his right upper arm was measured at 24” by Terry Todd .  By basically ending his lifting career at the age of 26, it is probable that he never reached his full physical potential as a professional lifter. Henry remains the youngest man in history to squat more than 900 pounds without a squat suit as well as the youngest to total more than 2,300 pounds raw  – he's the only person ever to have accomplished any of these feats at under 25 years of age.