Table 3. Descriptive statistics for the effects of PF, MF, and P&MF on HRV parameters.

Gender	Measures	PF		MF		P&MF
		M	SD	M	SD	M	SD
Male (N = 19)	∆RMSSD	-51.98	28.10	8.15	29.80	-56.75	21.00
	∆SDNN	-21.11	29.35	38.38	32.84	-31.07	29.96
	∆nLF	20.36	29.05	16.96	39.67	19.53	24.52
	∆nHF	-17.77	29.67	-6.87	36.01	-16.79	29.10
	∆nLF/nHF	84.44	129.98	64.19	128.03	94.76	136.53
Female (N = 17)	∆RMSSD	-62.45	15.03	28.44	21.32	-56.90	16.85
	∆SDNN	-45.47	26.66	50.27	34.23	-17.02	26.33
	∆nLF	29.37	38.25	19.74	39.46	39.04	29.29
	∆nHF	-35.79	24.32	-1.61	36.94	-34.26	23.58
	∆nLF/nHF	140.90	141.10	60.54	135.68	151.86	137.92
Total (N = 36)	∆RMSSD	-62.21	24.46	17.74	33.74	-56.81	21.29
	∆SDNN	-28.29	37.36	43.44	34.06	-25.45	28.86
	∆nLF	24.86	33.68	18.28	43.93	27.34	27.71
	∆nHF	-26.78	28.18	-4.39	36.02	-23.78	34.30
	∆nLF/nHF	112.67	136.35	62.47	129.80	117.60	137.19

PF: physical fatigue, MF: mental fatigue (MF), P&MF: both types of fatigue.