Table 2.

Normality test results (Shapiro–Wilk).

Scale type	Group	Pre-test (W value/p-value)	Post-test (W value/p-value)	Difference (W value/p-value)	Normality judgment
Exercise Addiction Inventory (EAI)	<35 sessions	0.9507/<0.001	0.9362/<0.001	0.9830/0.072	Difference conforms
	=35 sessions	0.9490/<0.001	0.9693/<0.001	0.9867/0.001	None conforms
	>35 sessions	0.9831/0.833	0.9688/0.377	0.9553/0.143	All conforms
Grit Scale (Grit-O)	<35 sessions	0.9350/<0.001	0.9406/<0.001	0.4869/<0.001	None conforms
	=35 sessions	0.9320/<0.001	0.9376/<0.001	0.4273/<0.001	None conforms
	>35 sessions	0.9580/0.175	0.9573/0.165	0.7421/<0.001	Difference does not conform