Validation du « Hunt Squash Accuracy Test » pour évaluer la performance des joueurs dans l'exécution de leurs coups

This study examined the validity of the Hunt Squash Accuracy Test (HSAT) for predicting within-game shot performance and tournament rank. Shots from eight male junior squash players performing the HSAT and tournament match-play were analysed. A typical-error analysis from repeated trials showed the HSAT to be very reliable (1.82%). HSAT rank had significant correlations (p < 0.05) to tournament rank (r = 0.98) and tournament shot success (r = 0.95). HSAT score showed significant correlations to the percentage of winning shots during match-play (r = 0.88). HSAT shots with significant correlations to successful match-play shots were backhand-drive (r = 0.92) and backhand-volley (r = 0.97). These results suggest the HSAT is a valid method of assessing the accuracy and performance of junior squash players. It could potentially be used to track shot improvements and predict match-play performance

A QUANTITATIVE ANALYSIS OF SQUASH SHOT ACCURACY

The purpose of this study was to examine the validity of the Hunt Squash Accuracy Test (HSAT) for predicting within-game performance on specific shot types. A correlation analysis compared the accuracy of specific shots during tournament match-play to the accuracy of the corresponding shot type in the HSAT. The correlation of the overall HSAT score against tournament rank was significantly large (0.95), as were the total % shot accuracy (0.90), total % backhand (BH) accuracy (0.94) and total % forehand (FH) accuracy (0.77) correlations. The only specific HSAT shot types with significantly large correlations to the corresponding match-play shots were; BH straight drive (0.92) and BH straight volley (0.97). The remaining shot types; boast, volley-drop and drops all showed non-significant correlations on both the BH and FH sides

RELlABlLlTY AND VALIDATION OF AN INERTIAL SENSOR USED TO MEASURE ORIENTATION ANGLE

This study examined the reliability and validity of an inertial measurement unit (IMU) for measuring orientation angle. An IMU was mounted onto a goniometer and moved through 0-90' with data collected at 10' increments. The process was repeated 10 times for all 3 axes. Reliability was measured via a typical error (TE) analysis from the 10 repeated trials. Validity was determined via a Pearson correlation and an ordinary least products (OLP) regression. The lMU was very reliable for all 3 axes (TE: x=0.03", y=0.03", z=0.02").T he Pearson correlation between the IMU and goniometer was large and significant for all 3 axes (r = 1.00,95%CI = 1 .O-1.0). The OLP regression showed no proportional bias for the 3 axes and only small fixed blas for the x and z axes. Overall the IMU tested was very reliably and accurate at measuring orientation angle