Table 4 Statistical results for the cardiac features in the frequency domain: Power of the low-frequency range (0.04 Hz to 0.15 Hz) LF, power of the high-frequency range (0.15 Hz to 0.4 Hz) HF, and the ratio LF/HF - all given as patient-individual z-scores over all six experimental conditions. The results contain values from the \(2\times 3\) rm ANOVA for main effects and interactions: test statistics \(F(\text {df}_{f1}, \text {df}_{f2})\), significance level p, and effect size (Partial Eta Squared) \(\eta _p^2\). In case of significant main effects, post hoc (pairwise) t-tests are reported with the test-statistic \(T(\text {df}_{t})\), Holm-adjusted significance level \(p_{\text {adj}}\) and effect size as Cohen’s d.
From: Effect of simultaneous physical and auditory stressors on cardiorespiratory response
rm ANOVA | LF | HF | LF/HF |
|---|---|---|---|
Auditory | \(F(1,17) = 4.804\) | \(F(1,17) = 11.992\) | \(F(1, 17) = 0.854\) |
\(\varvec{p = 0.043}\) | \(\varvec{p = 0.003}\) | \(p = 0.386\) | |
\(\eta _p^2 = 0.220\) | \(\eta _p^2 = 0.414\) | \(\eta _p^2 = 0.048\) | |
Physical | \(F(1.25,21.17) = 1199.968\) | \(F(1.26, 21.43) = 777.231\) | \(F(1.47, 25.06)= 31.868\) |
\(\varvec{p < 0.001}\) | \(\varvec{p < 0.001}\) | \(\varvec{p < 0.001}\) | |
\(\eta _p^2 = 0.986\) | \(\eta _p^2= 0.979\) | \(\eta _p^2 = 0.652\) | |
Interaction | \(F(2.00 34.00) = 0.164\) | \(F(1.21,21.43) = 3.089\) | \(F(2,34) = 0.164\) |
\(p = 0.850\) | \(p = 0.087\) | \(p = 0.849\) | |
\(\eta _p^2 = 0.010\) | \(\eta _p^2 = 0.154\) | \(\eta _p^2 = 0.010\) | |
Post hoc | |||
S vs. D | \(T(17) = 2.192\) | \(T(17) = 3.463\) | |
\(\varvec{p_\text {adj} = 0.043}\) | \(\varvec{p_\text {adj} = 0.003}\) | ||
\(d= 0.497\) | \(d= 0.836\) | ||
0 vs. 1 | \(T(17) = 37.484\) | \(T(17) = 29.831\) | \(T(17) = -4.125\) |
\(\varvec{p_\text {adj} < 0.001}\) | \(\varvec{p_\text {adj} < 0.001}\) | \(\varvec{p_\text {adj} = 0.002}\) | |
\(d = 5.495\) | \(d= 6.210\) | \(d = -0.970\) | |
0 vs. 2 | \(T(17) = 46.058\) | \(T(17) = 37.241\) | \(T(17) = -7.982\) |
\(\varvec{p_\text {adj} < 0.001}\) | \(\varvec{p_\text {adj} < 0.001}\) | \(\varvec{p_\text {adj} < 0.001}\) | |
\(d = 6.752\) | \(d = 7.752\) | \(d = -1.878\) | |
1 vs. 2 | \(T(17) = 8.574\) | \(T(17) = 7.411\) | \(T(17) = -3.857\) |
\(\varvec{p_\text {adj} < 0.001}\) | \(\varvec{p_\text {adj} < 0.001}\) | \(\varvec{p_\text {adj} < 0.001}\) | |
\(d = 1.257\) | \(d = 1.543\) | \(d = -0.907\) | |
