Table 1. Comparison of various animal motion platforms.

Function	Treadmill	Free running wheel	MRW	ISRW (this study)
Exercise training method	Forced (electrical shock)	Voluntary	Forced (motorized from center)	Forced (motorized from side)
Training intensity	Low, medium, high	Low, medium, high	Low, medium	Low, medium, high
Number of simultaneously training animals	Plurality	Single	Single	Single
Training time control	Yes	No	Yes	Yes
Automatic adaptive acceleration training	No	No	No	Yes
Runway structure	Rubber belt	Bars	Bars	Textured rubber belt
Running position detection	No	No	No	Yes
Effective exercise assessment	No	No	No	Yes
Psychological stress	High	None	Low	Low
Cost	High	Low	Medium	Low to medium