Hip extension exercises that mimic vertical jumping have vertical or axial directional load vectors and include squats, deadlifts, and static lunges.In resistance training, there are two distinct types of hip extension exercises: those that mimic vertical jumping and those that mimic sprinting.Due to the increased glute activation, sprinters commonly experience 'butt-lock.' Repetitive vertical jumpers experience 'quad-lock.'.A sprint activates 234% more mean gluteus maximus muscle than a vertical jump.A sprint involves maximum horizontal propulsion. A vertical jump involves maximal vertical propulsion.

Hip flexor flexibility allows for hip hyperextension and is an absolutely critical component to maximum glute activation tight hip flexors prevent hip hyperextension and maximum glute activation.

Length tension relationships dictate that a muscle contracts best when it's at resting length, which means that the gluteus maximus muscles contract the hardest from zero to twenty degrees of hyperextension.

Hip hyperextension is safe and occurs naturally during walking, running, sprinting, grappling, throwing, lunging, and hip flexor stretching.

The hip can hyperextend ten degrees with bent legs, twenty degrees with straight legs, and thirty degrees when forcibly pulled back.

The strongest joint action at the hip is hip extension/hyperextension.These motions are the most important in sports and include sprinting, leaping, cutting from side to side, and twisting.The upper gluteus maximus is involved in five different distinct actions hip extension, hip hyperextension, hip abduction, hip transverse abduction, and hip external rotation.The lower gluteus maximus is involved in three distinct actions hip extension, hip hyperextension, and hip transverse abduction.Fourteen years after reading my first book about glutes, I wrote my own. Knowing that the fitness population would seek scientific explanation to lend support to my data, I knew what my next step needed to be. I tested common and unique body weight, dumbbell, band, barbell, and machine exercises, and then tested three other individuals with varying anthropometry or body segment lengths to make sure the results I saw weren't atypical. So after performing thirty straight leg workouts and experiments with wires and electrodes attached to me so I could measure and record the glute, quad, hamstring, and adductor activity of over a hundred different hip extension exercises, it became clear that the glutes have been the most wrongly-pegged muscle group in fitness. I suspected that the methods and exercises I developed in my gym were more effective than what the typical fitness publications were printing. Early in 2009, I was trained to use electromyography (EMG) software that measures and records the muscular activity of exercises.

Emg test for flexor hip pain