Table 3. Mean (±standard deviation) of HRV and IPS according to competitive-anxiety group (Low and High).
Variable |
Low (n = 31) |
High (n = 35) |
F |
p |
ES |
SDNN (ms)* |
66.1 (22.3) |
57.9 (25.2) |
36.3 |
.01 |
.6 |
pNN50 (%)* |
24.2 (5.5) |
20.1 (4.0) |
45.6 |
.01 |
.9 |
InRMSSD (ms)* |
3.9 (.3) |
3.3 (.4) |
52.7 |
.01 |
1.0 |
LFnu* |
45.8 (9.7) |
55.0 (20.3) |
52.8 |
.01 |
1.0 |
HFnu* |
56.4 (21.2) |
47.1 (20.4) |
40.6 |
.01 |
.6 |
LF/HF* |
.9 (.1) |
1.0 (.1) |
53.0 |
.01 |
.9 |
IPS (points) |
775.1 (76.0) |
769.5 (71.4) |
5.6 |
.28 |
.1 |
*p < 0,05 between Low and High Groups.Note. SDNN = standard deviation of all N-N intervals; pNN50 = successive percentage of differences in R-R intervals greater than 50 ms; InRMSSD = logarithm of the difference of the quadratic mean of the successive normal R-R intervals; LFnu = corrected low frequency spectral component; HFnu = corrected high frequency spectral component; LF/HF = ratio between LF and HF; IPS = International Point Score; ES = effect size