Abstract

The hip extensor muscles play an important role in load transfer in the kinetic chain. Considering that, in the field hockey player, these muscles are very active due to the unique postural requirements of the game, further investigation is warranted. A descriptive study was therefore conducted to assess the m.gluteus maximus and m.harmstring strength in asymptomatic elite female field hockey players in order to obtain baseline data. Twenty elite female hockey players participated in the study. Isometric force, eccentric and concentric torque of the left and right m.gluteus maximus and m.harmstring were measured in standing through 30-0 hip flexion using a Kin-Com Dynamometer set at 30/second. Measurements were taken over six days. The mean over the 20 subjects for each test was used for calculations. The Analysis of variance demonstrated that the right m.gluteus maximus had significantly higher isometric peak force, concentric and eccentric torque (p<0.01) compared to the left m.gluteus maximus. The asymmetry found in hip extensor muscle strength in asymptomatic hockey players could be due to normal adaptation to the sport. It can however be problematic if it predisposes the hockey player to low back pain or other injuries due to alteration in muscle activity patterns. Further studies are indicated to determine whether the m.gluteus maximus asymmetry is specific to hockey and whether it affects the muscle activity patterns. This information will enable physiotherapists to address the muscle imbalance before it can develop into symptoms. Verf.-Referat