Postural Changes on Heart Rate Variability among Older Population: A Preliminary Study

Table 4

Descriptive statistics, repeated measures ANOVA, and paired t-test for HRV markers in the frequency domain.

HRV markers in frequency domain	Mean (standard deviation)			Repeated measures ANOVA results	Paired t-test results
	Sitting (ST)	Supine (SP)	Standing (SD)		ST-SP	SP-SD	ST-SD
LF	42.19 (21.94)	39.41 (17.57)	47.78 (20.62)		NS		NS
HF	57.43 (21.76)	60.34 (17.57)	51.96 (20.52)		NS		NS
LF/HF ratio	1.09 (1.08)	0.85 (0.74)	1.53 (1.94)	NS	NS		NS

Note. Symbols , , and denote significant levels at 0.05, 0.01, and 0.001, respectively; NS = no significance.