Table 4.
Results of heart rate variability measurements
| HR (bpm) | SDNN (mseg) | RMSSD (mseg) | LF (ms2) | HF (ms2) | LF (un) | LF/HF | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pre | post | pre | post | pre | post | pre | post | pre | post | pre | post | pre | post | |
| Sham | 70±8 | 65±6 | 19±7 | 19±8 | 20±9 | 22±13 | 156±141 | 142±88 | 185±165 | 249±341 | 46±22 | 45±23 | 1.2±1.2 | 1.2±1.0 |
| 100 J | 72±10 | 69±9 | 18±10 | 21±12 | 21±13 | 22±14 | 104±78 | 218±240 | 278±421 | 250±231 | 41±26 | 53±27* | 1.1±1.2 | 1.1±1.3 |
| 240 J | 69±5 | 66±5 | 20±11 | 23±15 | 22±14 | 26±23 | 184±166 | 237±263 | 232±334 | 408±750 | 45±24 | 48±26 | 1.8±3.1 | 1.5±1.4 |
| Sham+med | 69±6 | 68±7 | 23±14 | 21±13 | 28±25 | 24±23 | 172±126 | 152±68 | 49±26 | 42±23 | 50±23 | 57±23* | 1.9±2.4 | 2.1±2.1 |
| 100 J+med | 71±7 | 67±8 | 29±37 | 25±12 | 32±43 | 29±18 | 370±639 | 225±186 | 119±100 | 323±353 | 56±15 | 49±20 | 1.6±0.9 | 1.2±0.9 |
| 240 J+med | 69±5 | 65±5 | 18±9 | 21±8 | 18±9 | 22±10 | 174±174 | 218±166 | 208±359 | 221±236 | 52±18 | 53±20 | 1.7±2.0 | 1.7±1.8 |
Heart rate (HR); standard deviation of all normal R-R intervals (iR-R) recorded in milliseconds squared (SDNN); square root of the mean square of the differences between consecutive R-R intervals expressed in milliseconds squared (RMSSD); high frequency (HF) component in milliseconds squared (mseg2); low frequency (LF) component in milliseconds squared (mseg2) and in normalized units (un); LF/HF ratio. Statistical significance (p<0.05 vs pre, bold to facilitate visualization) in the Wicoxon test (non-parametric data) with Bonferroni correction; oral hypoglycemic medication (med). pre = 30 min before photobiomodulation therapy; post = 30 min after photobiomodulation therapy.