Effectiveness of Weight Belts

November 1990
International Journal of Sport Biomechanics;Nov1990, Vol. 6 Issue 4, p423
Academic Journal
Investigated in this study were the effects of the use of weight belts on performancecharacteristics of a squat exercise. Kinematic data were collected with a Locam high-speed 16mm camera at 40 fps. Ground reaction forces during the lifts were collected using a Kistler force platform. Intraabdominal pressure (IAP) was detected and recorded via a balloon catheter inserted 10 cm into the subject's rectum. Electromyographic signals (EMG) from the rectus abdominus, external obliques, and lower erector spinae muscles were collected with surface electrodes. The force data revealed that, in general, when wearing a weight-belt, the lifter's center of pressure in the anteroposterior direction went forward to a greater extent than when he was not using a weight-belt. This suggests that the subjects relied more on the trunk extensors to raise the weight when they wore either type of weight belt.


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