Chapter 12. Application of Changing Criterion Design. Limitations of the Study One limitation of the study was gender bias. It was noted in the study that there are more overweight girls than boys, yet the authors included only boys in the study. Therefore, the findings may not be generalizable to the general population.
Anatomy and supply. The gluteus maximus muscle builds the most superficial layer of the dorsal gluteal musculature and thus forms the surface anatomy of the gluteal region.
Weakness in the gluteus muscles can contribute to back pain. This is because theyâre important stabilizers of the hip joints, and of the lower back during movements like walking. Equipment needed: none. Muscles worked: gluteus maximus. Lie on the ground with your feet flat on the floor, hip-width apart.