Analysis of Sinus Variability in a Group of Cameroonian Athletes
Table 3
Repartition of the study population according to the parameters of the frequency analysis.
Variables
Sedentary (n = 15)
Sportsmen
Footballers (n = 21)
Handballers (n = 24)
VLF
Absolute power (ms2)
45.27 ± 2.90
281.90 ± 69.27c
200.70 ± 29.53
Absolute power (log)
3.66 ± 0.08
5.09 ± 0.24c
4.86 ± 0.16c
Relative power (%)
16.21 ± 0.64
26.87 ± 1.76b
30.82 ± 2.67c
LF
Absolute power (ms2)
170.80 ± 16.31
603.80 ± 100.80b
658.30 ± 83.09c
Absolute power (log)
5.04 ± 0.15
5.85 ± 0.32
6.03 ± 0.19a
Relative power (%)
75.35 ± 0.86
64.64 ± 1.51b
69.26 ± 2.63
Normalized powers (n.u.)
87.23 ± 1.47
88.30 ± 1.09
89.18 ± 1.24
HF
Absolute power (ms2)
22.95 ± 1.33
78.52 ± 13.16c
42.76 ± 5.15y
Absolute power (log)
2.50 ± 0.16
3.92 ± 0.22c
3.46 ± 0.16b
Relative power (%)
8.39 ± 0.38
8.61 ± 0.51
6.96 ± 0.42
Normalized powers (n.u.)
12.79 ± 1.18
11.14 ± 0.62
10.90 ± 0.76
Normalized powers
Total power (ms2)
246.40 ± 18.04
836.10 ± 103.70c
927.30 ± 94.12c
Ratio LF/HF
7.55 ± 0.58
8.46 ± 0.50
9.07 ± 0.60
Nonlinear analysis
SD1 (ms)
5.89 ± 0.34
13.56 ± 1.57c
11.44 ± 0.84b
SD2 (ms)
20.14 ± 0.83
36.48 ± 2.81c
36.32 ± 2.40c
Ratio SD2/SD1
3.50 ± 0.14
3.37 ± 0.46
3.31 ± 0.19
Each value represents the mean ± MSE, a.b and c denote significant difference from sedentary people, and y denotes significant difference from footballers. HF: high frequency; LF: low frequency. SD1 and SD2: standard deviations of the scattergram; VLF: very low frequency.