Research Article

The Measurement Method of the Impact Force of Shoulder Tackle and the Influence of the Lower-Extremity Strength on the Impact Force of Shoulder Tackle in Rugby Players

Table 3

Pearson correlation between external load value and calibrated load value of the impact force tester, and measurement standard error (SEM), 95% confidence interval difference, and percentage difference.

load ValueSEMConfidence interval (95%)Pearson correlationDifference
MinimumMaximumCoefficient (R)Value%

First time5.24410.47216.5281≤0.001<5%
Second time5.4849.90516.2381≤0.001<5%
Third time5.6509.66716.1911≤0.001<5%