Statistical analysis
There were four separate 2 (group) x 4 (test) repeated measures analysis of variance (ANOVAs) used to assess accuracy, backswing displacement, follow-through displacement, and club velocity differences between groups and across tests. The homogeneity of variance was examined using Levene’s test. Sphericity was examined using Mauchly’s test of sphericity. When significant, degrees of freedom were corrected using Greenhouse-Geisser estimates.