Research Article
Nicotine Ingestion Reduces Heart Rate Variability in Young Healthy Adults
Table 1
Definition of the measurements involved in this study.
| Name | Unit | Definition |
| LF power | ms2 | Power in low frequency range (mainly represents SNS activity) | HF power | ms2 | Power in high frequency range (mainly represents PNS activity) | LF (nu) | n.u. | LF in normalized units: | HF (nu) | n.u. | HF in normalized units: | BMI | Kg/ms2 | Body mass index: body mass (kg)/height (m)2 | HR | BPM | Heart rate | RMSSD | ms | The square root of the mean of the sum of the squares of differences between adjacent NN intervals | SDNN | ms | Standard deviation of all NN intervals |
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The LF (nu) and HF (nu) were assessed for HRV analysis in this experiment. |