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Figure 2 | BMC Neurology

Figure 2

From: Change in heart rate variability precedes the occurrence of periodic leg movements during sleep: an observational study

Figure 2

Changes in the HRV-related variables in transition from periods without PLMS to those with PLMS. (A) VLF, very low frequency; (B) LF, low frequency; (C) HF, high frequency; (D) FHFB, fluctuation of a HF band; PLMS, periodic leg movements during sleep. Data are expressed as means ± standard errors. Note: “0” on the time axis signifies the beginning of the period with PLMS.

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