Figure 1.
Schematic diagram of test set-up.
Figure includes position of participant (P) in relation to feeding zone (Z), net (N), target zones (1, 2, 3 and 4) and feeder (F) as well as dimensions of feeding zone and target zones.
Figure 2.
Mean movement criterion scores for (A) specific and (B) multiple target trials at pre, post and retention tests.
(a) indicates significant differences from pre-test (p<0.05), (b) indicates significant differences from post-test (p<0.05) and (*) indicates significant differences between groups (p<0.05). Error bars represent Standard Error Measure (S.E.M) (n = 21).
Table 1.
Mean sparsity index (%) for each kinematic variable.
Figure 3.
Mean right shoulder internal/external rotation angle.
Mean kinematic data normalized to 100 data points for movement clusters found in specific target trials for the six data sets: NP - pre (A), post (B), retention (C); LP - pre (D), post (E), retention (F). C1, C2…C7 represent movement clusters found within each data set. Positive angles indicate internal rotation and negative angles indicate external rotation. The “Backswing” is approximated based on the point where the external rotation was the greatest.
Figure 4.
Mean kinematic data normalized to 100 data points for movement clusters found in specific target trials for the six data sets: NP - pre (A), post (B), retention (C); LP - pre (D), post (E), retention (F). C1, C2…C7 represent movement clusters found within each data set. An angle of 0° indicated that the racquet was pointing towards the net while an angle of 180° indicated that the racquet was pointing towards the baseline (typically at or near backswing). The “Backswing” is approximated based on the point where the racquet rotation was the greatest.
Figure 5.
Number of trials and distribution of participants in each cluster.
Each bar represents the number of trials and distribution of participants found in each movement cluster for specific target trials in the six data sets: NP - pre (A), post (B), retention (C); LP - pre (D), post (E), retention (F). C1, C2…C7 represent movement clusters found within each data set. Participants are labelled as LP1…LP11 (for LP group) and NP13…NP24 (for NP group).