The Study On The Measuring Validity Of Sit-and-Reach Test

Flexibility refers to the movement of human joints in different directions, as well as muscles, ligaments stretching. Flexibility to ensure the speed, strength, give full play to ensure the coordination of movements to increase range of motion and to prevent the accident, have an important significance.The general flexibility of the measurement method used is the Sit and Reach measurement. In this study, the existing Sit and Reach measuring instrument, the instrument in measuring the sitting board to add a pulley system, measuring sitting legs become possible. Select2009enrollment to2011students enrolled in the health of students of18-21years old, divided into a group of boys and girls divided into a group, then sampling measurement for all students. Record on the relevant indicators of the body. Each group to select men and women110. Sampling targeting college freshmen and sophomore junior class as a unit, then extract the105healthy men and women, a total of210. Boys height between160cm-180cm, weight50K-95Kg female height150cm-175cm, female weight40Kg-70Kg. The test card for data logging. Data record in the data collection process will inevitably lead to error, review the test card and removed. Arm length, the angle of the prone position, prone position peak shoulder length data collection analysis and discussion of overall Sit and Reach effect overall and individually.We clearly find that the boys results and measurement results were significantly related to trunk flexion angle, sitting peak height at the withers, and the prone position peak shoulder. The reliability of the three test items were sitting acromion high reliability coefficient of0.9261, acromion, prone position, the reliability coefficient of0.9064, the bending angle reliability coefficient of0.8651. Girls measurement results and a significant correlation between prone position acromion high, peak sitting shoulder height, bending angle. Acromion, prone position, reliability coefficient of0.9064, sitting the acromion high reliability coefficient for0.9261, sitting acromion high reliability coefficient of0.9261.Have in common is obvious, they were trunk flexion angle, sitting acromion high, prone position peak height at the withers. The girls sitting leg length, arm length was negatively correlated. The boys and measurement validity score was negatively related to height, arm length, sitting legs. And standing leg length, body weight significantly correlated.