Table 2. Descriptive statistics of badminton players’ HR, HRR- as well as HRV-related variables over different time periods. Data are means (±SD).
| HRV- and HRR-related variables |
Pre-match |
In-match |
In-match rest |
Post-match |
| HRV-related variables |
| Mean R-R |
457.7 (54.8) |
354.2 (28.5) |
364.1 (46.1) |
381.5 (52.2) |
| Ln-SDNN |
3.72 (.80) |
3.12 (.58) |
3.15 (.69) |
3.24 (.62) |
| Ln-RMSSD |
3.32 (1.00) |
2.43 (.75) |
2.25 (1.01) |
2.42 (1.01) |
| Peak VLF (Hz) |
.03 (.01) |
.03 (.01) |
.03 (.01) |
.03 (.01) |
| Peak LF (Hz) |
.10 (.03) |
.09 (.03) |
.09 (.04) |
.09 (0.04) |
| Peak HF (Hz) |
.27 (.05) |
.24 (.04) |
.21 (.05) |
.24 (.07) |
| Peak VLF Power (%) |
17.6 (14.0) |
24.6 (19.1) |
31.2 (28.3) |
33.4 (28.4) |
| Peak LF Power (%) |
28.5 (14.3) |
30.1 (10.5) |
35.3 (15.8) |
29.9 (15.3) |
| Peak HF Power (%) |
53.3 (18.8)) |
45.0 (19.2) |
33.3 (22.9) |
36.4 (25.3) |
| Ln-LFnu Power |
3.60 (.51) |
3.77 (.37) |
3.99 (.44) |
3.90 (.47) |
| Ln-HFnu Power |
4.01 (.38) |
3.92 (.32) |
3.58 (.55) |
3.62 (.66) |
| Ln-LFnu/Ln-HFnu Ratio |
.92 (.22) |
.98 (.18) |
1.16 (.31) |
1.14 (.38) |
| Ln-SD1 |
3.39 (1.04) |
2.66 (.82) |
2.23 (1.02) |
2.44 (1.14) |
| Ln-SD2 |
3.82 (.70) |
3.26 (.54) |
3.38 (.66) |
3.45 (.54) |
| HRR-related variable |
| HRR (%) |
12.9 (6.3) |
14.3 (4.8) |
| HR-related variables |
| HR Minimum (bpm) |
115(21) |
|
| HR Mean (bpm) |
167(14) |
|
| HR Maximum (bpm) |
193(11) |
|
