Table 2. Comparison of CSA, R2*, and T2 values between the 4 groups before exercise.

Parameters	Group 1	Group 2	Group 3	Group 4	F	P
CSA (mm2)	6,133.09±1,374.65	6,356.83±1,977.01	6,311.92±1,219.09	6,418.42±1,078.86	0.186	0.905
R2* value (HZ)	559.87±34.89	571.05±43.85	586.01±35.83	571.62±83.26	0.137	0.938
2 value (ms)	611.78±54.02	634.72±30.55	608.54±48.55	633.99±52.72	0.551	0.650

All values are mean ± standard deviation. CSA, cross-sectional area.