Excessive trunk movements during sports gestures are commonly observed in lower limb injuries. Considering that poor movement quality and strength deficits in trunk and hip muscles have been associated with this excessive trunk movement, training of trunk control is needed in athletes. This study described the acute effects of an external trunk resistance in the sagittal and transverse planes during single-leg jumps in trunk kinematics of 20 female college athletes with poor movement quality of the lower limbs. The peak angles and range of motion of the trunk with and without resistance was compared. A decrease in the minimum peak flexion, a reduction in the range of movement in frontal plane and, an increase in the range of movement in the transverse plane were observed with trunk resistance.
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