Electromyographic preactivation pattern of the gluteus medius during weight-bearing functional tasks in women with and without anterior knee pain

Frontal Plane Biomechanics in Males and Females with and without Patellofemoral Pain

“…It is important to note that the PFPS subjects failed to increase their GM activity at the same knee flexion angle that they carried out the greatest excursion of contralateral pelvic drop, hip adduction, and knee abduction, when compared with the confrol group. Our results are in agreement with a previous study (34) that also found decreased GM activation in PFPS subjects during a stepping task compared with controls but in confrast with others that reported no difference between groups (28,29,35,41). Differences in the methodology used to assess GM activation may have accounted for the different results among studies.…”

“…Previous studies have reported diminished hip abductor sfrength in sedentary individuals and female athletes with PFPS when compared with pain-free confrols (6,20,24), but no study compared isometric hip abductor torque between males and females with PFPS. Previous studies have evaluated the magnitude of gluteus médius (GM) activation during ftinctional activities in subjects with PFPS as compared with the controls (28,29,34,35,41). However, the studies cited only evaluated the overall activity ofthe GM or its activation in the stance phase during weight-bearing activities.…”

Gluteal muscle activity and patellofemoral pain syndrome: a systematic review

“…Seven studies31–34 36 38 39 evaluated GMed onset timing during functional tasks, and one study31 evaluated GMax (see figure 2). Strong evidence indicates individuals with PFPS exhibit delayed GMed onset during stair descent (two HQ34 36 and two LQ38 39_studies; I 2 =51%, p=0.10), with a small pooled ES (−0.53, −0.91 to −0.15).…”

“…Strong evidence indicates individuals with PFPS exhibit delayed GMed onset during stair descent (two HQ34 36 and two LQ38 39_studies; I 2 =51%, p=0.10), with a small pooled ES (−0.53, −0.91 to −0.15). Moderate evidence indicates that individuals with PFPS exhibit delayed GMed onset during stair ascent (three HQ32 34 36 and one LQ39 study; I 2 =67%, p=0.02) with a small ES (−0.52, −0.85 to −0.19).…”

Relação entre rigidez articular passiva e torque concêntrico dos rotadores laterais do quadril

“…The strength produced by the muscles from the hip joint is commonly studied due to its influence on the performance of functional activities, such as gait, landing from jumps, and running [1][2][3] . However, the passive characteristics of the hip joint also deserve attention in the study of human movement.…”