Boren et al. (2011) reported 5 exercises that generated more than 70 % of MVC in respect of gluteus maximus EMG amplitude, which were (in descending rank order) the front plank with hip extension, the gluteal squeeze, the side plank abduction with dominant leg on top, the side plank abduction with dominant leg on bottom, and the single - leg squat. (strengthandconditioningresearch.com)
Indeed, Arumugam et al. (2015) reported that the increase in gluteus maximus EMG amplitude during walking was present in individuals with and without a history of prior hamstring strain injury. (strengthandconditioningresearch.com)