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